Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Closure checks – Spring
Reexamination Certificate
1998-11-12
2001-04-03
Knight, Anthony (Department: 3626)
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Closure checks
Spring
C016S08600R
Reexamination Certificate
active
06209170
ABSTRACT:
BACKGROUND OF THE INVENTION
This invention relates to a door knob bumper and retainer which is designed to prevent the door knob of a door from damaging the wall and to retain the door knob so that the door is held open. The door knob bumper and retainer of this invention functions without any mechanical parts, is simple to install and is reliable to maintain a door in an open condition and protect the wall.
BRIEF SUMMARY OF THE INVENTION
Almost all doors which swing on hinges have door knobs of one type or another. The door knob may be of a cylindrical nature, it may be of an elongated nature, but in any event, all door knobs function similarly in that they are used by turning to open doors. Unfortunately, when the doors open, the door knobs frequently meet a wall adjacent the door opening and this meeting can cause damage to the wall. Furthermore, doors have a tendency to swing shut as a result of the location of hinges, air movements and the like all of which can be very frustrating. It is an object of this invention to provide a door knob bumper and retainer which both retains the door knob, so that the door is held open, and at the same time protects the wall from damage from the door knob. When the words door knob are used in this provisional application, it is intended that those words cover door knobs of cylindrical shape as well as elongated door handles and the like. Mechanical door knob catches are known in the art and have been used to retain doors in an open condition.
Mechanical door knob retainers generally include a unit which will hook the door knob in some fashion after being activated by the door knob striking the unit. For example, U.S. Pat. No. 4,951,984 to Huang issued Aug. 28, 1990 is designed to retain a door knob and uses an elastic hook member. Another reference which discloses a door knob retainer is U.S. Pat. No. 1,085,027 issued to Downey on Jan. 20, 1914 which puts a door check on the opposite side of the door from the door knob and includes a cam arrangement on a piston which absorbs the energy of a slamming door pneumatically. Neither of these references disclose an invention in any way similar to that of applicant's door knob bumper and retainer way simi
REFERENCES:
patent: 878864 (1908-02-01), Buschur
patent: 1085027 (1914-01-01), Downey
patent: 1128173 (1915-02-01), Miller
patent: 1431040 (1922-10-01), Rawlings
patent: 1889681 (1932-11-01), Marshall
patent: 2289873 (1942-04-01), Claude-Mantle
patent: 2530365 (1950-11-01), Johnson et al.
patent: 3055689 (1962-09-01), Jorgensen
patent: 4159837 (1979-07-01), Morita
patent: 4951984 (1990-08-01), Huang
Knight Anthony
Lee Mann Smith McWilliams Sweeney & Ohlson
Peavey Enoch E.
LandOfFree
Door knob bumper and retainer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Door knob bumper and retainer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Door knob bumper and retainer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2445348