Title of Invention

"A SINGLE ACTION HANDLE MECHANISM FOR OPERATING THE DOOR/WINDOW"

Abstract This invention provides a single action handle mechanism for operating the door / window comprising at least two handles connected to a cam, which operates the spring loaded latch characterized in that said handles are mounted on two handle plates, each handle functioning independently of the other, the said handle plates are connected to two inner operating plates, and at least one pin fixed to each of said inner plates such that when any of said handles is pushed or pulled, the cam operates the latch inwardly to open the door/window.
Full Text This invention relates to a single action handle mechanism for operating the door/window.
BACKGROUND
The conventional door / window handles operate on the double action mechanism for operating the door or window. The conventional door / window handle mechanism is shown in figure la, Ib & Ic of the accompanying drawings. It consists of handles (1A, IB), which are interconnected with a connecting rod (2) such that when handle (1A) moves, the handle (IB) also moves. The said handles are connected to a cam (1), which operates the spring loaded latch (L). On rotating the handle, (1A or IB) downward to the extent of about 45°, it retracts the latch (L) from door frame against the compression spring (3). On releasing the handles (1A, IB), latch (L) comes out due to said spring pressure on latch (L). To open the door or window, two actions are required, viz., firstly the handle has to be rotated downwardly for about 45°, and secondly a simultaneous push or pull is required to open the door/window.
The drawback of the convention door / window handle mechanism is that the handle(s) mounted in front and back of the door are connected by a connecting rod (2) resulting in more wear and tear of handle assembly. Furthermore, a single handle can not be used in case of a window.
The object of this invention is to obviate the aforesaid drawback.
Further object of this invention is to provide a single action handle mechanism.
'Yet' another object of this invention is to provide handles functioning independently of each other.
To achieve the said objectives this invention provides a single action handle mechanism for operating the door / window comprising at least one handle connected to a cam which operates the spring loaded latch characterized in that:
said handle(s) is mounted on one or more handle plates, each
handle functioning independently of the other,
said handle plates are connected to one or more inner operating
plates, and
at least one pin fixed to each of said inner plates such that when
any of said handles is pushed or pulled, the cam operates the latch
inwardly to open the door/window.
A separate lock is provided in said mechanism to lock the door.
One handle is provided for operating the window.
Two handles are provided for operating the door.
A spring is provided with the latch to operate the door in single action.
The said handles can be of any desired shape.
The invention will now be described with reference to the accompanying drawings:
Figures la, Ib & Ic show the conventional door/window handle mechanism for operating the door/window.
Figures 2a, 2b, 2c show the single action handle mechanism for operating the door/window, according to this invention.
Figures 3a, 3b & 3c shows the type of handles for a single action handle mechanism for operating the door/window, according to this invention.
Detailed Description:
The conventional door / window handle mechanism has been described under the heading 'background'.
Figures 2a, 2b & 2c describe a single action door/window handle mechanism. According to this invention, the handles (POP1, POP2) are fitted to the operating plates (OP1, OP2) and are provided for push/pull action simultaneously. The said handles operate independently of each other. Pins (2A1, 2A2) are attached to the other side of the operating plate. On pushing/pulling the handle (POP1 or POP2), pins (2A1, 2A2) attached to the operating plates (OP1, OP2), swings the cam (1), which retracts the latch (L) against the spring (3), which in turn releases the door in a single action. On releasing the handle (POP1 or POP2), the latch (L) comes forward due to the spring force, hi case of a window either of the handle (POP1 or POP2) can be used individually.
Handles (POP1, POP2) can be of different designs and can be connected to two
pivots (4a & 4b) or at a single pivot (4), as shown in figures 3a, 3b & 3c.
Further, the position of handles can be changed around 360° in one plane without any basic change of operating mechanism, to create different models of
door / window operating mechanism to suit the customers. This mechanism has application for hotels, restaurants and office buildings and is convenient for operation.



I claim:
1. A single action handle mechanism for operating the door / window
comprising at least one handle connected to a cam which operates the
spring loaded latch characterized in that:
said handlers) is mounted on one or more handle plates, each
handle functioning independently of the other,
said handle plates are connected to one or more inner operating
plates, and
at least one pin fixed to each of said inner plates such that when
any of said handles is pushed or pulled, the cam operates the latch
inwardly to open the door/window.
2. A single action handle mechanism as claimed in claim 1 wherein said
mechanism is provided with a lock to lock the door.
3. A single action handle mechanism as claimed in claim 1 wherein one
handle is provided for operating the window.
4. A single action handle mechanism as claimed in claim 1 wherein two
handles are provided for operating the door.
5. A single action handle mechanism as claimed in claim 1 wherein a spring
is provided with the latch to operate the door in single action.
6. A single action handle mechanism as claimed in claim 1 wherein said
handles can be of required shape to achieve the push & pull action.
7. A single action handle mechanism for operating the door /window substantially as herein described with reference to and as illustrated in the accompanying drawings.

Documents:

896-del-2001-abstract.pdf

896-del-2001-claims.pdf

896-del-2001-correspondence-others.pdf

896-del-2001-correspondence-po.pdf

896-del-2001-description (complete).pdf

896-del-2001-drawings.pdf

896-del-2001-form-1.pdf

896-del-2001-form-13.pdf

896-del-2001-form-19.pdf

896-del-2001-form-2.pdf

896-del-2001-form-3.pdf

896-del-2001-form-5.pdf

896-del-2001-form-62.pdf

896-del-2001-pa.pdf

896-del-2001-pct-210.pdf

896-del-2001-pct-220.pdf

896-del-2001-petition-138.pdf


Patent Number 195278
Indian Patent Application Number 896/DEL/2001
PG Journal Number 43/2007
Publication Date 26-Oct-2007
Grant Date 27-Sep-2007
Date of Filing 30-Aug-2001
Name of Patentee RAJAN BAJAJ, Indian National
Applicant Address C-20, INDUSTRIAL ESTATE, ALIGARH (U.P.)
Inventors:
# Inventor's Name Inventor's Address
1 RAJAN BAJAJ C-20, INDUSTRIAL ESTATE, ALIGARH (U.P.), INDIA.
PCT International Classification Number E05C 1/14
PCT International Application Number N/A
PCT International Filing date
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 NA