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US4523417A
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Radiant energy shielded enclosures
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CA997793A
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Revolving door operating and speed control mechanism
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Operating and speed control mechanism for revolving doors
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CA987962A
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Collapsible revolving door having removable wings
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CA974381A
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Cartridge detent assembly
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Revolving door speed control and hanger mechanism
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Revolving door hanger assembly
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Gearing with centrifugal brake for revolving door
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Collapsing mechanism for revolving door wings
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CA967811A
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Motor driven operating mechanism for revolving doors
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Revolving door operating and speed control mechanism
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Collapsible revolving door having removable wings
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Revolving door assembly quick disconnect connector
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Quarterline stop control system for power driven revolving doors
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Quarterline stop position control circuit for power driven revolving doors utilizing two speeds
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Revolving door operating mechanism and speed controller
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Stub shaft connection for a revolving door assembly
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Freight car construction with recessed load securing means
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Revolving door operating mechanism and speed controller
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US3307660A
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Revolving door speed control device
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