Closure fasteners – Knob rose plates
Patent
1987-03-17
1988-09-27
Smith, Gary L.
Closure fasteners
Knob rose plates
292350, 292351, 292348, 292DIG2, E05B 1502
Patent
active
047736844
ABSTRACT:
The invention relates to a door fitting with at least one door operating unit, such as a doorknob, a door handle or the like, and at least one cover plate to cover the opening provided in a door, a window sash or the like for the door operating unit, in which the cover plate has at least one round opening for the door operating unit. Primarily in order to secure the door handle against being pulled off, but also in order to help secure the door handle against canting, the invention provides that the door operating unit for such a door fitting has a cylindrical circumferential groove in the area going through the opening in the cover plate when installed, and that the cover plate consists of at least two parts with curved recesses having inner shoulders that are adapted to the groove and which can be inserted into same, and that the curved recesses combine to form a circular opening in the cover plate when the pieces are combined.
REFERENCES:
patent: 286614 (1883-10-01), Hughes
patent: 470072 (1892-01-01), Ormsby
patent: 1209037 (1916-12-01), Rosenfeld
patent: 2676049 (1954-04-01), Wurzel
patent: 2842952 (1958-07-01), Russell
patent: 3228279 (1966-01-01), Sampson
patent: 4597600 (1986-07-01), Wilke et al.
Chiri Jacques
Dieckmann Dieter
Benn Marvin N.
Brueske Curtis B.
Gerstein Milton S.
Normbau, Inc.
Smith Gary L.
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