Sliding door

Details Sliding door Sliding door

1992-08-05

1994-04-12

Cuomo, Peter M.

Movable or removable closures

Mounted for multidirectional or oblique movement

Initial or terminal movement transverse to sliding movement...

49209, 49358, E05D 1510

Patent

active

053014685

ABSTRACT:
A sliding door adapted to operate an entrance of a large-sized freezer or the like and capable of facilitating operation at the initial stage of opening of the door. Upward elastic force of elastic suspensions constantly acts on a door body, so that the door body may be suspended while being raised from a floor, when the door is kept at an open position. Also, when the entrance is kept closed with the door, a driving wheel strikes on a tapered section of a lower rail surface to cause a bottom packing of the door body to be pressed on the floor against upward elastic force of the suspensions. Thus, when sliding of the door body toward the open position is started, the driving wheel is moved on the tapered section and concurrently the bottom packing of the door body is raised from the floor, during which the door body is moved obliquely upward and obliquely outward due to arrangement of the bracket assemblies and the like at the same inclination angle; so that a peripheral packing of the door body may be smoothly separated from a periphery of the entrance. Thus, frictional resistance does not substantially occur during the door opening operation, so that the operation is facilitated.

REFERENCES:
patent: 3571976 (1971-03-01), Schmid
patent: 3611637 (1971-10-01), Saino
patent: 4404770 (1983-09-01), Markus
patent: 4433507 (1984-02-01), Chikaraishi
patent: 4476652 (1984-10-01), Beauchot
patent: 4619075 (1986-10-01), Wiles
patent: 4651469 (1987-03-01), Ngian et al.

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