Title of Invention

ELECTROGRAVITOMECHANICAL RELAY (EGM RELAY)

Abstract The present invention Electrogravitomechanical (EGM) relay is a device that complete or interrupt one or more circuit by physically moving electrical contacts into contact with each other with application of an electrical power for a very small period. No continuous power is required for keeping the closed contact into open position and the normally open contact in close position after first energisation of the relay. An electrogravitomechanical (EGM) relay having two electromagnets 4 and 21, armatures, moving contacts, fixed contacts, spring loaded fixed contact assembly (SFCA) 13, gravity contacts and separator 14a. When the coil of the energizing circuit energises the armature gets attracted and the NC contact between moving contact 12 and fixed contact 11 will open and NO contact between moving contact 12 and SFCA 13 Will close, the separator 14a will fall between the gap of the contacts 11 and 12 resulted into closing of gravity contacts. Now the coil is de-energised but the contact 11 and 12 will not close due to presence of the separator between them and the contact between 12 and 13 will be either in open or close condition depending upon the setting of the contact tip of the SFCA 13. The energization of the coil of the reset circuit the separator falls and rest on top of the contact area of the normally close contact.
Full Text 84

THE GAZETTE QFTNPIA: EXTRAQUDINAKY [PART U—Sic. 3(»i)l

FORM 2
THE PATENT ACT 1970
(39 of 1970)
&
The Patents Rules, 2003
PROVISIONAL/COMPLETE SPECIFICATION
(See section 10 and rule13)
1. TITLE OF THE INVENTION
ELECTROGRATIVITOMCHANICAL REALY (EGM Realy)

2. APPLICANT (S)
(a) NAME: BINAY KUMAR
Nationality:Indian
ADDRESS: BINAY KUMAR /DSO; DRM Office; Bhavnagar para;
Bhavnagar -364003(Gujarat)
3. PREAMBLE TO THE DESCRIPTION
PROVISIONAL
Tho following specification describes the Invention.
COMPLETE
Th'o following spocillcaiion particularly describes the invention and the manner in which it is to be performed.
4. DESCRIPTION (Description shall start from next page.)
5. CLAIMS (not applicable for provisional specification. Claims should shut with the preamble • "l/we claim" on separate page)
6. DATE AND SIGNATURE (to be given at the end of last page of spocilicalion)
7. ABSTRACT OF THE INVENTION (to bo given along wilh complete spwificnlion on separate page)
Note: -
'Repeat boxes In case of more than one entry.
• 'To be signed by the applicant(s) or by authorized registered patent agent.
. 'Name of the applicant should be given in full, family name In the beginning -
i 'Con.plete address of the applicant should be given stating the postal index no./code, state and
I country.
I 'Strike out the column which Is/aro not applicable .

1. TITLE OF THE INVENTION
Electrogravitomechanical (EGM) Relay 2. FIELD AND BACKGROUND OF THE INVENTION
The present invention Electrogravitomechanical, EGM, relay relates to electromechanical relay.
The electromechanical relays are devices that complete or interrupt a circuit by physically moving electrical contacts with each other due to energisation or de - energisation of energising coil of an electromagnet. There are moving and fixed contacts in electromechanical relays. The moving contacts and ferrous plate are part of the armature. When coil of electromagnet energises it develops magnetic field which attracts ferrous plate of the armature. The armature is pivoted at one end on a metal frame and moving contact is fixed on other ends.
In the prior art there are two circuits: the energising circuit and the contact circuit. The coil of the electromagnet is in energising side and the contacts are on contact side.
There are various types of electromechanical relays available in the market but none of them have the reset circuits and gravity contacts. The types of electromechanical relays are general-purpose relay, reed relay, machine control or heavy duty relay and aerospace or MIL -spec relay. General-purpose relays operate with AC or DC current at common voltages. For switching of industrial components such as contactors, starter motors and solenoids reed relays are used. To control starters and other industrial components heavy duty relays are used.
The electromechanical relays have contacts include the number of normally open contacts, the number of normally closed contacts and the number of changeover contacts.
Normally open (NO) contact and normally close (NC) contact of a relay means a relay contact pair that is open and close respectively when the coil is not energised.
In all type of electromechanical relays the contacts are NO, NC or change over contact. The position of the contact changes when the coil of the energising circuit gets energises. When the coil de-energises the contacts restore their previous position.
In the prior art continuous electrical power is always required for keeping the coil of the electromagnet in energising stage. There are applications where electrical impulse for a short period is available and the changed position of the contacts should not change after the de energisation of the coil. In other words there is a need of a relay whose NC contact once gets open should not closed again after de energisation and there should be a separate circuit for making it closed. Similarly there should be a provision for setting the contact tip of the fixed contact of the NO contact for either to be remaining in contact position or in open position after de energisation of the coil.
The present invention EGM relay is developed to ensure that once the relay contacts changes their position after energisation of the coil, the contacts will not require electrical power to keep their changed position.
3. SUMMARY OF THE INVENTION
The present invention Electrogravitomechanical (EGM) relay is developed to meet the requirement of keeping the normally close contact in open position and nonnally open contact in either close position or open position even after de-energisation of the coil of the relay and also the relay is having gravity contacts in addition to the resetting circuit.
1

In the present invention, EGM relay, there are three circuits: the energising circuit, the contact circuits and the reset circuit. The contact circuits consist of fixed contact, moving contact, and spring loaded fixed contact There are two electromagnets one in energising circuit and the other in the reset circuit in preferred embodiments. In one embodiment there is one electromagnet in the energising circuit only and there is no resetting circuit The resetting is done manually.
In the present invention when the coil of the energising circuit energises, the NC contact gets open and the NO contact gets closed as in the prior art. When the coil de - energises the normally closed contact does not get close and the normally open contact either in open condition or close condition depending upon the contact tip setting of the spring loaded fixed contact assembly. There is one additional circuit, in some of the preferred embodiments of the present invention, for bringing the relay contacts to their position prior to energisation and called reset circuit. This feature is not available in the prior art.
The present invention EGM relay is used to save electrical energy because it does not require energy for keeping its contact in energising condition once the coil is energised. Once the coil of the energising circuit energises the relay contact changes their contact and no electrical power after the initial energisation is required to keep relay contact in changed state. This function is required in many applications like in Earthquake Alarm and Advance Warning System, energy saving locks, door locks, door handle etc.
In the first embodiment of the present invention when the coil of the electromagnet energises the ferrous plate gets attracted and the normally closed contact gets open, the normally open contact gets closed and normally open gravity contact gets closed. An insulating plate, resting on the top surface of the fixed contact and moving contact falls due to gravity between the gap of the moving contact and fixed contact. Now on de energisation of the coil the normally close contact do not get close and the normally open contact may be in close condition or open depending upon the setting of the contact tip of the spring loaded fixed contact assembly. The gravity contact will remain in closed condition. Now the insulating plate is lifted up manually and then the normally closed position will get closed and the normally open contact will open. The gravity contact will also get open.
The second embodiment of the present invention is similar to the first embodiment upto falling of the insulating plate. For lifting the insulating plate another circuit called reset circuit is provided in this embodiment The one end of the armature of the reset coil is connected to the top of the insulating plate and the armature is pivoted on the metal frame. When the coil of the reset circuit energises, armature gets attracted and the insulating plate lifted up resulting into closing of the normally open contact and opening of the normally open contact and also opening of the gravity contacts.
The third embodiment of the present invention is similar to the second embodiment with some additional features i.e there are fixed contact and moving contact in the reset circuit.
4. BRIEF DESCRIPTION OF THE DRAWING
The symbols, detailed descriptions and various embodiments of the present invention are shown in the various drawings as detailed below:
Figure - 1 shows front view of the first embodiment of the present invention.
Figure - 1 a shows top view of the first embodiment of the present invention.
Figure - lb shows a symbol for the first embodiment of the present invention.
Figure - 2 shows front view of the second embodiment of the present invention.
Figure - 2a shows top view of the second embodiment of the present invention.

Figure - 2b shows a symbol for the second embodiment of the present invention. Figure - 3 shows front view of the third embodiment of the present invention. Figure - 3a shows top view of the third embodiment of the present invention. Figure - 3b shows a symbol for the third embodiment of the present invention. Figure - 4a shows a view of the insulating plate 14a for second and third embodiment of
the present invention. Figure - 4b shows a view of the insulating plate 14 for first embodiment of the present
invention. Figure - 4c shows a view of the ferrous plate 22b and cylindrical drum 27 of the present
invention. Figure - 4d shows a view of the spring loaded fixed contact assembly 13 of the present
invention. Figure - 4e shows a cross sectional view of the spring loaded fixed contact assembly 13
of the present invention.
5. KEY TO ILLUSTRATIONS

1. Insulating base plate
la. Hole
2. Transparent Top cover
3. Bottom cover
4. Electromagnet
4a. Wire for 4
4b. Wire for 4
5. Ferrous piate
6. Insulating plate
7. Moving contact arm
7a. Insulating block
7b. Wire
8. Metal frame for 4
9. Spring
10. Pivot
10a. Stopper
11. Fixed contact
12. Moving contact
13. Spring loaded fixed contact assembly
14. Insulating plate
14a. Insulating plate
15. Rectangular hollow pipe
15a. Rectangular hollow pipe
16. Terminal strip
17. Terminal strip
18. Terminal strip
19. Terminal strip
20. Terminal plate
21. Electromagnet
21a. Wire for 21
21b. Wire for 21
21c. Terminal strip

21 d. Terminal strip
22. Ferrous plate
22a. Strip/ rod
22b. Ferrous plate
23. Metal frame for 21
24. Pivot
25. Stopper
26. Spring
27. Cylindrical drum
28. Pin
29. Screw
29a. Nut-bolt
30. Insulating stopper
31. Insulating plate
31a. Insulating block
31b. Moving arm
31c. Moving contact
3 Id. Fixed contact
3 le. Fixed contact
31 f. Insulating plate
31 g. Terminal strip
31h. Cable
32. Small hole for 28
33. Contact tip
34 Shaft
34a. Hole
35. Locking nut
36. Spring
37. Outer cylindrical frame
38. Inner cylindrical frame
39. Gravity contact strip
39a. Terminal strip
39b. Terminal strip
40. Gravity contact strip
40a. Terminal strip
40b. Terminal strip
41. Nut-bolt
TERMINALS:
ET Energising Terminals
RT Reset Terminals
FCT Fixed Contact Terminal
MCT Moving Contact Terminal
SFCT Spring loaded Fixed Contact Terminal
GCT Gravity Contact Terminals

6. DETAILS DESCRIPTION OF THE INVENTION A. FIRST EMBODIMENT
Figure - 1 describes the First Embodiment of the present invention Electrogravitomechanical (EGM) relay. The front view, top view and a symbol of the present invention is shown in fig - 1, fig - la and fig - lb respectively.
A thick rectangular base plate 1 made of insulating material is used for fixing various components, transparent top cover 2 and bottom cover 3 of the EGM relay. An electromagnet 4 is fixed on a metal frame 8. The metal fame 8 is fixed on the base plate 1 by a nut -bolt 41. The armature consists of a ferrous plate 5, insulating plate 6, moving contact 12, moving contact arm 7, and insulating block 7a. The moving contact arm 7 is fixed in the insulating block 7a which is riveted on the ferrous plate 5 in such a way that the moving contact is electrically insulated from the ferrous plate 5. The insulating plate 6 is in between the insulating block 7a and the ferrous plate 5. Moving contact 12 is fixed on the one end of the armature and the other end is pivoted 10 on the metal frame 8. A spring 9 is connected to the metal frame 8 and the one end of the armature to push the armature. A stopper 10a is used for keeping the armature in place. Terminal strip 16 and terminal strip 17 is fixed on the base plate 1. The two ends of the coil of the electromagnet 4 are connected to 16 and 17 by wires 4a and 4b. Terminal strips 18, 19, 20, 39a, 39b, 40a and 40b are fixed on the base plate 1. Moving contact 12 is connected to the terminal strip 18 through wire 7b. Fixed contact 11 is fixed on the terminal strip 19. Spring loaded fixed contact assembly 13 is fixed on the terminal plate 20.
In fig - 1, a rectangular hollow pipe 15 is fixed in the base plate with some portion above and the other portion below the base plate. The insulating plate 14 is placed inside the rectangular hollow pipe 15 and the plate 14 is free to move inside the pipe 15.
Fig - 4d & 4e gives a three dimensional and cross - sectional view respectively of the spring loaded fixed contact assembly 13. The spring loaded fixed contact assembly 13 is fixed on the terminal plate 20. It consists of contact tip 33, shaft 34, spring 36, outer cylindrical frame 37, inner cylindrical frame 38 and locking nut 35. One end of the shaft 34 is connected to the contact tip 33 and the other end is free to move inside the hole 34a. The inner cylindrical frame 38 is fixed on the terminal plate 20. One hole 34a is made in the terminal plate 20 for free movement of the shaft 34 through it. The outer cylindrical frame 37 is screwed on the inner cylindrical frame 38 and can be adjusted for different length and then locked by the locking nut 35. The spring 36 is placed inside the outer cylindrical frame 37 between inner cylindrical frame 38 and the contact tip 33. The contact tip 33 is free to move inside the outer cylindrical frame 37. All parts of the spring loaded fixed contact assembly 13 are made of conducting material.
In fig - 4b, the insulating block 30 is fixed on the insulating plate 14. A pin 28 is attached to the top of the insulating plate 14. Gravity contact tips 39 and 40 are fixed to the bottom of the insulating block 30. The bottom of the insulating plate is half cylindrical.
Top cover 2 and bottom cover 3 are fixed on the base plate 1 by four nut - bolts 29a. There are four holes la made in the base plate for mounting the relay. A rectangular hollow pipe 15a is fixed on the roof of the top cover 2 concentric with a rectangular hole in the top cover 2 for free movement of the insulating plate 14.
The insulating plate 14 is resting on the top of the area between moving contact 12 and fixed contact 11. When the coil of the electromagnet 4 energises, it attracts armature resulting into opening of the normally close contact and closing of the normally open contact due to movement of the moving contact 12. The insulating plate 14 falls in the gap between fixed contact 11 and moving contact 12 due to gravitational force. The gravity contact strip 39 and 40 made contact with 39a & 39b and 40a & 40b respectively.
r

Now the coil of the electromagnet 4 de energised, the moving contact 12 will try to move to its previous position but due to presence of the insulating plate 14, the moving contact 12 can not make contact with the fixed contact 11. The contact tip 33 of the spring loaded fixed contact assembly 13 can be set for remain in either close or open condition with moving contact 12 after de - energisation of the coil of the electromagnet 4. The manual lifting of the insulating plate 14a will allow the moving contact 12 to make contact with the fixed contact 11 and open its contact with spring loaded fixed contact. The closed gravity contact will open.
Thus the resetting of the EGM relay in this embodiment is done manually.
Thus after energisation of the coil of the electromagnet 4 no power is required to keep the normally close contact into open position and normally open contact into close position. This advantage is not there in the prior art.
B. SECOND EMBODIMENT
Figure - 2 describes the Second Embodiment of the present invention Electrogravitomechanical (EGM) relay. The front view, top view and a symbol of the present invention is shown in fig - 2, fig - 2a and fig - 2b respectively.
The second embodiment of the present invention is similar to the first embodiment with a minor additional changes. In this embodiment the resetting of the EGM relay is done electrically by a resetting circuit.
The insulating plate 14a as shown in fig - 4a is used instead of the insulating plate 14 and it is lifted up by the armature of the electromagnet 21 of the reset circuit. A cylindrical drum 27 is fixed in the top slot of the insulating plate 14a and a pin 28 is inserted in the hole 32 passing through the centre of the cylindrical drum 27. The drum rotates on this pin. In this embodiment the top surface of top cover 2 does not have any hole and any rectangular hollow pipe 15a fixed as it is in the first embodiment. The armature consists of a ferrous plate 22 and strip/ rod 22a and it is pivoted at 24 on the metal frame 23. One end of the strip/ rod 22a is fixed in the cylindrical drum 27. A spring 26 supports the rod 22a. A stopper 25 allows only the vertical movement of the armature. The electromagnet 21 is fixed on the metal frame 23. A screw 29 fixed the metal frame 23 on the base 1. Two terminal strips 2lc and 21d are fixed on the base plate 1. Two wires 21a and 21 b are connected to two terminal strips 21 c and 21 d respectively.
When the coil of the electromagnet 4 energises the moving contact 12 moved and a gap is developed between it and fixed contact 11. The insulting plate 14a resting on the top of the fixed contact 11 and moving contact 12 will fall in the gap and the other end of the armature above electromagnet 21 lifted up. The two gravity contacts 39 and 40 make contacts with terminal strip 39a & 39b and 40a & 40b respectively. Now the electromagnet de energises. The normally close contact become open and the normally open contact become either close or open depending upon the setting of the contact tip 33 of the spring loaded fixed contact assembly 13.
When the coil of the electromagnet 21 energises, it attracts ferrous plate 22. The other end of the armature's rod 22a lift the insulating plate 14a resulting into opening of gravity contacts 39 and 40, closing of NC contacts and opening of NO contacts. When the coil of the electromagnet 21 de energises the insulating plate 14a will fall and rest on the top of the fixed contact 11 and moving contact 12.
C. THIRD EMBODIMENT
Fig - 3 describes the Third Embodiment of the present invention Electrogravitomechanical (EGM) relay. The front view, top view and a symbol of the present invention is shown in fig - 3, fig - 3a and fig - 3b respectively.
L

The third embodiment is similar to the second embodiment of the present invention with minor changes. In this embodiment the armature of the resetting circuit consists of ferrous plate 22b, insulating plate 31, insulating block 31a, moving arm 31b and moving contact 31c. The armature is pivoted to metal frame 23 at 24. One end of the ferrous plate 22b is fixed in the cylindrical drum 27. The insulating plate 31 is fixed between the insulating block 31a and the ferrous plate 22b. The moving arm 31b is placed inside the insulating block 31a. The insulating plate 3 If is fixed on the metal frame 23. Fixed contacts 31d and 31e, terminal strips 21c, 21d and 31g are fixed on the insulating plate 3If. The cable 31h connects the moving contact 31c and terminal strip 31g. Wires 21a and 21b of coil of the electromagnet 21 are connected to the terminal strip 21b and 21c respectively.
The operation of the energising circuit and resetting circuit is same. In the reset circuit of the present invention there are two NO (Normally Open) contacts. When the coil of the electromagnet 21 is in de-energised condition the moving contact 31c is not touching the fixed contacts 3 Id and 3 le and the insulating plate 14a is rest on the top of the fixed contact 11 and the moving contact 12. When the coil of the electromagnet 4 energises the normally close contact opens and the insulating plate 14a falls between the gap of the fixed contact 11 and moving contact 12. This resulted into closing of moving contact 31c and fixed contact 3Id. Now the coil of the electromagnet 21 energises, the ferrous plate is attracted by the electromagnet 21 and thus the closed contact between moving contact 31c and fixed contact 3Id gets open and the moving contact makes contact with the fixed contact 3 lg.

[BinAy KONJ^K]
9-
Now first the coil of the energising circuit de-energises and then that of the reset circuit. First the moving contact 12 makes contact with the fixed contact 1 land then the insulating plate 14a will rest on the top of the NC contact. The moving contact 31c will not make contacts with any fixed contacts 31 d and 31 e.

ABSTRACT
The present invention Electrogravitomechanical (EGM) relay is a device that complete or interrupt one or more circuit by physically moving electrical contacts into contact with each other with application of an electrical impulse. No continuous power is required for keeping the closed contact into open position and the open position in closed condition.
The NC (Normally Close) contact will open and the NO (Normally Open) contact will either close or in open condition after closing of the EGM relay on application of a short electrical impulse.
An electrogravitomechanical (EGM) relay having two electromagnets 4 and 21, armatures, moving contacts, fixed contacts, spring loaded fixed contact assembly (SFCA) 13, gravity contacts and insulating plate 14a. The contact tip of the SFCA 13 is adjustable and can be set for remain in close or open condition with the moving contact 12.

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Documents:

1056-mum-2006-description(provisional).pdf

1057-mum-2006-abstract(17-5-2007).pdf

1057-MUM-2006-ABSTRACT(25-4-2011).pdf

1057-mum-2006-abstract-1.jpg

1057-mum-2006-abstract.pdf

1057-mum-2006-claims(17-5-2007).pdf

1057-MUM-2006-CLAIMS(AMENDED)-(10-10-2011).pdf

1057-MUM-2006-CLAIMS(AMENDED)-(25-4-2011).pdf

1057-MUM-2006-CORRESPONDENCE(2-12-2011).pdf

1057-mum-2006-corresspondence-others.pdf

1057-mum-2006-description(complete)-(17-5-2007).pdf

1057-mum-2006-drawing(17-5-2007).pdf

1057-MUM-2006-DRAWING(25-4-2011).pdf

1057-mum-2006-drawings.pdf

1057-MUM-2006-FORM 1(25-4-2011).pdf

1057-MUM-2006-FORM 13(2-12-2011).pdf

1057-MUM-2006-FORM 13(25-7-2011).pdf

1057-mum-2006-form 13(4-12-2007).pdf

1057-mum-2006-form 18(15-6-2007).pdf

1057-mum-2006-form 2(17-5-2007).pdf

1057-mum-2006-form 2(title page)-(17-5-2007).pdf

1057-MUM-2006-FORM 2(TITLE PAGE)-(25-4-2011).pdf

1057-mum-2006-form 3(17-5-2007).pdf

1057-MUM-2006-FORM 3(25-4-2011).pdf

1057-mum-2006-form 5(17-5-2007).pdf

1057-MUM-2006-FORM 5(25-4-2011).pdf

1057-mum-2006-form-1.pdf

1057-mum-2006-form-2.doc

1057-mum-2006-form-2.pdf

1057-mum-2006-form-3.pdf

1057-mum-2006-form-5.pdf

1057-MUM-2006-REPLY TO EXAMINATION REPORT(25-4-2011).pdf

1057-MUM-2006-REPLY TO HEARING(10-10-2011).pdf


Patent Number 249194
Indian Patent Application Number 1057/MUM/2006
PG Journal Number 42/2011
Publication Date 21-Oct-2011
Grant Date 10-Oct-2011
Date of Filing 04-Jul-2006
Name of Patentee BINAY KUMAR
Applicant Address BINAY KUMAR DEE /P; SECOND FLOOR; CONTROL ROOM, BUILDING ;DRA OFFICE; PRATAP NAGAR; VADODARA
Inventors:
# Inventor's Name Inventor's Address
1 BINAY KUMAR BINAY KUMAR DSO; DRM OFFICE;BHAVNAGAR PARA; BHAVNAGAR-364003,
PCT International Classification Number H01H47/00
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA