Fluid handling – With vehicle guide or support – e.g. – service station
Patent
1989-06-30
1990-10-02
Smith, Gary L.
Fluid handling
With vehicle guide or support, e.g., service station
49 33, 49127, 49130, 220345, B60S 304
Patent
active
049601504
ABSTRACT:
A movable safety cover for covering an elongated opening in a floor. Has a plurality of deck carriers positioned adjacently and supported on each elongated side of the opening by a respective carrier track. Has track roller members mounted at each end of the side members of a carrier in a position slightly out of contact with the track member when the side members are in frictional contact and engaging the track in rolling relation when one end of the carrier is lifted up slightly from the frictional contact of the tracks. Has a plurality of low profile rolling ball transfer members mounted on top of the side members to permit the carrier to roll across the top of an adjacent carrier. Each of the track roller members is mounted to extend slightly above each side member to permit each side of an adjacent carrier to roll as the adjacent carrier member is lifted at one end to engage its roller members into rolling engagement with the track and is pushed horizontally while lifted to place the bottom of the adjacent side members on top of adjacent roller members. The carrier may be pulled up and tilted to horizontal to roll on the rolling ball transfer members.
REFERENCES:
patent: 2223023 (1940-11-01), Weilemann
patent: 2848722 (1958-08-01), Choports
patent: 3226778 (1966-01-01), Kollsman et al.
patent: 3654732 (1972-04-01), Schacht
patent: 3866624 (1975-02-01), Peterson
patent: 4188985 (1980-02-01), Osterman
patent: 4616451 (1986-10-01), Glick
patent: 4762242 (1988-08-01), Harris et al.
Bradley James E.
Redman Jerry
Smith Gary L.
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