Door knob handle

Details Door knob handle Door knob handle

2002-09-14

2004-06-22

Browne, Lynne H. (Department: 3676)

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Handle, handle component, or handle adjunct

Door handle

C016S412000, C016S422000

Reexamination Certificate

active

06751827

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to round and oval shape conventional door knob, which are a removable handle to door knobs to accomplish an easier turning function, thereof are intended to assist the person with difficult by turning on a round and oval shape conventional door knob and to open that door.
DESCRIPTION
a. Human Factors Appreciation
Elderly, persons with arthritis, children or person carrying thing with both hands quite frequently have difficultly in turning a conventional rotation type door knobs. In many cases, it becomes necessary for such people to replace the door knobs and related fastener hardware due to their experienced difficulty in opening and closing a door.
b. Commercially Availability
At present, there are no commercially available items which could be easily attached to an existing door knob, where such device could be more easily to manage during a rotation action. There appears to be such a need for a device which can be attached to conventional door knobs, the present invention significantly will fulfills this need.


REFERENCES:
patent: 2756088 (1956-07-01), Sutter
patent: 3827739 (1974-08-01), Overholser
patent: 4397489 (1983-08-01), Lind
patent: 4504087 (1985-03-01), Pennington
patent: 4783883 (1988-11-01), Szalay
patent: 4913479 (1990-04-01), Allison
patent: 5008551 (1991-04-01), Randolph
patent: 5501494 (1996-03-01), Willetts
patent: 5664287 (1997-09-01), Sendelbach
patent: 5813805 (1998-09-01), Kopras

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