Collapsible revolving door

Details Collapsible revolving door Collapsible revolving door

E - Fixed Constructions

06

B

108/7

E06B 3/90 (2006.01) E05D 15/02 (2006.01)

Patent

CA 1127008

- 1 - ABSTRACT OF THE DISCLOSURE A collapsible revolving door is described and in- cludes upper and lower latching mechanisms which normally retain leaves of the door in radially disposed, angularly spaced positions but which allow the leaves to collapse flat against one another in the event that abnormal forces are applied thereto. Each latching mechanism includes one latch member for each leaf. The latch member is mounted on a pivot pin for the leaf so that the latch member will turn with the member from a normal radial position to a collapsed position. The latch member is coupled at a posi- tion generally centrally of its length to the pin so that respective end portions of the latch member are defined on opposite sides of the pin. The latch member is retained in its normal position by spring biassed detent means acting between each end portion of the latch member and the housing. The detent means are designed to release when abnormally high forces are applied to the leaf so that the leaf can move to its collapsed position.

341196

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