Closure fasteners – Bolts – Double acting
Patent
1989-06-23
1990-08-28
Seidel, Richard K.
Closure fasteners
Bolts
Double acting
16 86A, 297DIG38, 297DIG19, F16F 136
Patent
active
049519840
ABSTRACT:
This invention relates to an improved door catch and in particular to one utilizing an integrally formed door catch to catch a door knob by pushing a door backward, the knob of the door will push the elastic door catch upward and when the knob has passed through the hook of the catch and the door catch will, because of its elastic force, return to its original position and hook the knob thus the door is held at a fixed place.
REFERENCES:
patent: 1889681 (1932-11-01), Marshall et al.
patent: 3864785 (1975-02-01), Hoppock
Cuda Carmine
Klein David I.
Rosenberg Morton J.
Seidel Richard K.
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