Opening/closing mechanism for the use in circular-arc shaped sli

Details Opening/closing mechanism for the use in circular-arc shaped sli Opening/closing mechanism for the use in circular-arc shaped sli

1990-05-29

1991-02-12

Smith, Gary L.

Movable or removable closures

Convex or concave closure and opening

49118, 49123, 49370, 474200, E06B 334

Patent

active

049913476

ABSTRACT:
An opening/closing mechanism for use in a circular-arc shaped sliding door including a transverse frame having a circular-arc horizontal sectional shape and mounted on the upper parts of a pair of left and right door bodies; a drive pulley and a driven pulley mounted on the circumferentially one end of the transverse frame and on the other end thereof, respectively; and an endless belt wound between and around the drive pulley and a driven pulley, the pair of door bodies being connected in place to the endless belt so that they may be slidably moved in opposite directions to each other along a pair of left and right guide rails, respectively, each of which is bent in a circular-arc shape concentric with the center of the circular-arc of the transverse door frame.

REFERENCES:
patent: 3995506 (1976-12-01), Poe
patent: 4050191 (1977-09-01), Azuma
patent: 4259810 (1981-04-01), West
patent: 4785579 (1988-11-01), Sugiyama

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