Marine door movement control apparatus

Details Marine door movement control apparatus Marine door movement control apparatus

1991-03-14

1992-11-17

Larson, Lowell A.

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

Closure checks

Pneumatic

16 66, 188317, 188282, E05F 300

Patent

active

051632047

ABSTRACT:
Door control apparatus is provided for a sliding door for use with a boat or a ship. The door control apparatus is unbiased in either direction and will substantially maintain any position in which it is placed, except during extreme rolling or pitching of the boat or ship due to heavy weather conditions. The door control apparatus provides for equal but opposite force to open the door as to close the door. The door control apparatus includes piston and cylinder means with fixed orifices. Other than the piston its associated parts, there are no moving parts to the mechanism.

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patent: 4558767 (1985-12-01), Taylor
patent: 4628579 (1986-12-01), Taylor
patent: 4874066 (1989-10-01), Silberstein

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