Title of Invention

A DEVICE OF CIRCUIT JAMMER OF SELF STARTER

Abstract An interlock circuit has been developed to prevent the self starter to restart by the operator / driver, when the engine is in running condition, protecting the self-starter and fly wheel gear from being damaged. Once the engine is started, the alternator starts delivering the current and the magnetic switch starts functioning making the circuit normally open and battery is disconnected from supply.
Full Text 2
FIELD OF THE INVENTION
The invention relates to the development of an interlocking circuit of
self starter for light / heavy motor vehicle / mobile equipment to
prevent any damage to the self starter, fly wheel gear of the engine
during running condition.
BACKGROUND OF THE INVENTION
Sometimes, the driver / operators of light / heavy motor vehicle /
mobile equipments may start by mistake the engine of the vehicle
through self starter, while engine is in running condition and as a
result pinion strikes the fly wheel ring gear causing damage to self
starter and fly wheel gear, which is very costly in respect; of repairing
/ replacement / down time of the vehicle or the equipment
In this background a novel circuit has been developed in the present
invention, incorporated in the existing circuit of the self starter to

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eliminate the hazards of restart of the engine in running condition.
The novelty of this invention is with the logic of NO/MC contacts
which has been described in detailed description supported by
schematic diagram.
OBJECT OF THE INVENTION
- The object of the invention is to develop an interlocking circuit in
the self starter of a motor vehicle / mobile equipment to prevent
any accidental damage
- Another object of the invention is to prevent the self starter from
restarting white the engine is in running condition
- Further object of the invention is to develop a simple device
incorporating NO / NC contact with minimum cost

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- Also the object of the Invention Is to minimise maintenance / down
time cost of a vehicie or equipment
SUMMARY OF THE INVENTION
An interlock circuit has been developed to prevent the self starter to
restart by the operator / driver, when the engine is in running
condition, protecting the self-starter and fly wheel gear from being
damaged. Once the engine is started, the alternator starts delivering
the current and the magnetic switch starts functioning making the
circuit normally open and battery is disconnected from supply.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWING
FIG: 1 shows the schematic drawing of the interlocking device in -
corporatlng the Engine, Alternator, solenoid valve, magnetic switch,
Battey, Push button switch, NO / NC contact, solenoid valve,
magnetic switch, 4st switch, self starter.

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DETAIL DESCRIPTION OF THE PREFERRED EMBODIMENT
The prime embodiment of the present invention is described through
the schematic diagram as per Fig-1.
The initial power of the vehicle / mobile equipment is supplied by the
battery (8) when the Push Button switch (7) is made on, through
'NC' contact (6,) 4st switch (4) and self starter (3) in firing of the
engine (1).
Once the engine (1) starts, the shaft of the engine, through fly wheel
rotates the alternator (2) to generate captive power required for the
vehicle or mobile equipment.
The alternator current in turn excites the solenoid coil (5) to activate
the magnetic switch (9) which makes the normally closed contact
(NC) 6 to normally open (NC) 6' to de excite the self starter circuit in
running condition of the engine. The battery (8) in that position is

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not able to continue supply power to the starter through (NO)
contact 6', even if, the push button of the starter (3) is pushed by
mistake, which is termed as interlocking.
When the engine stops, alternator stops automatically generating no
current flowing through the solenoid coil (5) of the magnetic switch
(9). As a result spring charged contact comes back to its original
position NC (6) from NO position (6*) and the engine can again be
restarted by the self starter through battery power.

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WE CLAIM
1) A novel device of interlock system in the self starter circuit of light
/ heavy motor vehicle and mobile equipment comprising:
- engine (1)
- alternator (2)
- self starter (3)
- solenoid coil (5)
- NO/NC contact (6'-6)
- Push Button switch (7)
- Battery (8)
- Magnetic switch (9)
2) The claim as claimed under claim (1) wherein NO / NC contact (6
- 6'), operated by magnetic switch (9) having soienoid coil and
bar (5), preventing self starter circuit from enerzising in running
condition of the engine.

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3) The interlock system as claimed under claim (1) and (2),
substantially described under detailed description along with the
enclosed drawing.

An interlock circuit has been developed to prevent the self starter to
restart by the operator / driver, when the engine is in running
condition, protecting the self-starter and fly wheel gear from being
damaged. Once the engine is started, the alternator starts delivering
the current and the magnetic switch starts functioning making the
circuit normally open and battery is disconnected from supply.

Documents:

00763-kol-2007-abstract.pdf

00763-kol-2007-claims.pdf

00763-kol-2007-correspondence others 1.1.pdf

00763-kol-2007-correspondence others 1.2.pdf

00763-kol-2007-correspondence others.pdf

00763-kol-2007-description complete.pdf

00763-kol-2007-drawings.pdf

00763-kol-2007-form 1.pdf

00763-kol-2007-form 18.pdf

00763-kol-2007-form 2.pdf

00763-kol-2007-form 3.pdf

00763-kol-2007-gpa.pdf

763-KOL-2007-ABSTRACT.pdf

763-KOL-2007-AMANDED CLAIMS.pdf

763-KOL-2007-AMANDED PAGES OF SPECIFICATION.pdf

763-KOL-2007-DESCRIPTION (COMPLETE).pdf

763-KOL-2007-DRAWINGS.pdf

763-KOL-2007-EXAMINATION REPORT REPLY RECIEVED-1.1.pdf

763-KOL-2007-FORM 1.pdf

763-KOL-2007-FORM 2.pdf

763-KOL-2007-OTHERS.pdf

763-kol-2007-pa.pdf

763-KOL-2007-PETITION UNDER RULE 137.pdf

763-KOL-2007-REPLY TO EXAMINATION REPORT.pdf


Patent Number 249437
Indian Patent Application Number 763/KOL/2007
PG Journal Number 42/2011
Publication Date 21-Oct-2011
Grant Date 19-Oct-2011
Date of Filing 17-May-2007
Name of Patentee TATA STEEL LIMITED
Applicant Address JAMSHEDPUR
Inventors:
# Inventor's Name Inventor's Address
1 NOT AVAILABLE NOT AVAILABLE
PCT International Classification Number F16D23/12
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA