FORM 2
THE PATENTS ACT 1970
(39 of 1970)
&
THE PATENTS RULES, 2003
PROVISIONAL SPECIFICATION
(See Section 10; rule 13)
TITLE OF THE INVENTION "WINDOW WINDING HANDLE"
APPLICANT
TATA MOTORS LIMITED, an Indian company
having its registered office at Bombay House,
24 Homi Mody Street, Hutatma Chowk,
Mumbai 400 001 Maharashtra, India
INVENTORS Vijay Veer Singh, Prashant Sakharam Adharkar
All Indian national
of TATA MOTORS LIMITED,
an Indian company having its registered office
at Bombay House, 24 Homi Mody Street, Hutatma Chowk,
Mumbai 400 001 Maharashtra, India
PREAMBLE TO THE DESCRIPTION The following specification describes the invention
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FIELD OF INVENTION
The present invention relates to a handle structure of a window regulator for opening and closing a window. BACKGROUND
Generally, apparatuses for opening and closing a window may either be an automatic apparatus for opening and closing a window with a motor or a hand-operated apparatus for opening and closing a window. More particularly, the hand-operated apparatus may be installed to a window frame and may then be controlled by the hand of a user.
Figure 1 shows a handle structure of a hand-operated apparatus for opening and closing a window according to prior art. As shown in Figure 1, the handle structure 100 is provided with a body part 102, a knob 104 mounted to an outer surface of the body part 102 at one end thereof, and a joining portion 106 mounted to inner surface of the other end of the body part 102. A shaft-inserting groove 108 is formed in the joining portion 106. A driving shaft installed in a housing of a window regulator for opening and closing the window, wherein a part of the driving shaft comes out of an inner panel of a door. The driving shaft is inserted into the shaft-inserting groove 108. For opening or closing a window the user has to rotate the handle structure 100 in the clockwise direction or the counterclockwise direction by using the knob 104.
The above arrangement of the handle 100 where the joining portion 106 is constricted is used when trim portion of the door is close to the inner panel of the door. When the trim portion is far from the door inner panel then above arrangement of constricted joining portion can not be used. Increasing length of the driving shaft in such
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cases will decrease the strength of the driving shaft. The distance between the trim portion and the door inner panel is more when an arm rest is provided in a vehicle door.
Hence, there exists a need for a window winding handle which can not only be used when the distance between the trim portion and the door inner panel is more but also provide better coupling. OBJECTS OF THE INVENTION
An object of the present invention is to provide a window winding handle when trim portion is not close to the door inner panel.
Another object of the present invention is to provide better coupling between a window winding handle and a driving shaft of a window regulator.
Yet another object of the present invention is to improve opening and closing of a window.
Yet another object of the present invention is to provide an elongated connector or joining portion.
The invention is described with reference to the embodiments given hereinafter. It may however be understood that the embodiments only by way of example and that the invention may be exemplified in many other ways obvious to a person skilled in the art. DESCRIPTION
Figure 2 shows a handle structure of the hand-operated apparatus for opening and closing a window according to the present invention. As shown in Figure 2, the handle structure 200 is provided with a body part 202, a knob 204 mounted to an outer surface of the body part 202 at a one end thereof, and a connector or a joining portion 206 mounted to inner surface of the other end of the body part 202. A shaft-inserting groove 208 is
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formed in the connector 206. A driving shaft installed in a housing of a window regulator for opening and closing a window. The connector 206 is an elongated portion as shown in Figure 2. The connector portion 206 is inserted in a trim portion and coupled to the driving shaft. The purpose of making the connector 206 portion elongated is to have better coupling with the driving shaft when the distance between the trim portion and the door inner panel is more. Increasing length of the driving shaft in such case will decrease the strength of the driving shaft. Generally the trim portion is wide when the arm rest is provided in a vehicle door.
In another embodiment the window winding handle of the present invention can be used in many types of residential and commercial structures, various types of vehicles, boats, flying apparatus, etc.
It is reiterated that the present invention is not limited to the above embodiments.
Dated this 18th Day of June 2007
To T SRINIVASAN
The Controller of Patents AGENT FOR THE APPLICANT
The Patent office at Mumbai
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