Under carriages for sliding doors having symmetrical weight dist

Details Under carriages for sliding doors having symmetrical weight dist Under carriages for sliding doors having symmetrical weight dist

1981-01-13

1983-10-04

Silverberg, Fred

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

Panel hangers, travelers and/or tracks

Wheel mounts

16DIG1, 104279, 384422, E05D 1302

Patent

active

044070438

ABSTRACT:
This invention relates to under carriages for supporting and displacing heavyweight sliding doors. Two spaced carriages 10 and 11 are arranged to run on a trackrail 6 which is cemented into the ground. Each of the carriages comprises two track wheels 19 and 20 situated one behind another and these track wheels each have flanges 21 at each side to enflank the head 15 of the track. The track wheels are also joined to a rigid beam which includes a spheroidal seat bearing 25 into which engages a calotte 26 having a plane upper surface which fits into a matching recess in a door frame 27 to carry the weight of the door, (FIG. 3).

REFERENCES:
patent: 2070437 (1937-02-01), Kjolseth
patent: 2646949 (1953-07-01), Saulnier
patent: 3120683 (1964-02-01), Harris
patent: 3241283 (1966-03-01), Ahlgreen
patent: 3305952 (1967-02-01), Dressler
patent: 3614803 (1971-10-01), Matthews
patent: 3745706 (1973-07-01), Stermac
patent: 3866539 (1975-02-01), Gasser

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