Invention Grant
- Patent Title: Gearing with centrifugal brake for revolving door
- Patent Title (中): 装备离心式制动器
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Application No.: US34830773Application Date: 1973-04-05
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Publication No.: US3887050APublication Date: 1975-06-03
- Inventor: SHECKELLS AMUEL E
- Applicant: INT STEEL CO
- Assignee: Int Steel Co
- Current Assignee: Int Steel Co
- Priority: US34830773 1973-04-05; US21038571 1971-12-21
- Main IPC: E05D15/02
- IPC: E05D15/02 ; E05F15/10
Abstract:
The power drive and speed control means for a revolving door along with related electrical control circuitry and mechanical components are all contained compactly in the center shaft or column of the door structure. Costly and time-consuming servicing of parts mounted in the ceiling or floor is eliminated.
Information query
