Balanced door

Details Balanced door Balanced door

1979-08-30

1981-05-19

Downey, Kenneth

Movable or removable closures

Mounted for multidirectional or oblique movement

Swings on plural axes; e.g., pivotal link arms

49340, 49504, 52291, E05D 1530

Patent

active

042676673

ABSTRACT:
An entrance door having its top and bottom rails pivotally connected with arms supported for rotation by a shaft bearing journalled in the door jamb. The door jamb includes a tension member preventing distortion of the door jamb and displacement of the shaft supporting thrust bearing by the mass of the door thus insuring free swinging door movement.

REFERENCES:
patent: 3385003 (1968-05-01), Owen
patent: 3425161 (1969-02-01), Catlett et al.
patent: 3893273 (1975-07-01), Sailor

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