Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Checks and closers – Pneumatic
Patent
1989-05-11
1990-12-04
Seidel, Richard K.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Checks and closers
Pneumatic
16 84, E05F 300
Patent
active
049742850
ABSTRACT:
A device for assisting in the opening and closing of a pivotally mounted member comprising an elongated housing having a closed end and an open end and an inner annular cylindrical space. An annular cylindrical slide having an inner and an outer end is slidably mounted in the space for longitudinal movement into and out of the housing and a spring centrally mounted between the housing and the slide retains the slide in the housing in a retracted position. Braking devices are provided for retarding movement of the slide in either direction that include nozzle-shaped orifices communicating the inner space with the outside of the housing so that air has to flow into and out of said orifice as the slide moves relative to the housing. Locking devices hold the slide in an extended position, the locking devices being releaseable by pulling the slide out of the housing a short distance, and journal devices are at the outer end of the slide for connecting the slide to a pivotally mounted member.
REFERENCES:
patent: 1334081 (1920-03-01), Coffman
patent: 3105264 (1963-10-01), Truhon
patent: 4629167 (1986-12-01), Kimura et al.
A. Raymond
Cuda Carmine
Seidel Richard K.
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