Invention Grant
- Patent Title: Device for screwing in and out electrical lamps
- Patent Title (中): 用于拧入和拉出电灯的装置
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Application No.: US8020Application Date: 1979-01-31
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Publication No.: US4218085APublication Date: 1980-08-19
- Inventor: Henry M. Unger
- Applicant: Henry M. Unger
- Assignee: Unger Henry M
- Current Assignee: Unger Henry M
- Priority: DEX2804764 19780204
- Main IPC: H01K3/32
- IPC: H01K3/32
Abstract:
A device provided with a stick for screwing in and out electrical lamps located at an elevated position from a floor comprises a plurality of suction cups arranged circularly at one end of the stick. The suction cups are arranged to be urged against the glass body of a lamp by means of the stick and in doing so by an evacuation of a portion of the air in the suction cups adhering to the glass body of the lamp so firmly that the lamp is able to be screwed in or out. The suction cups are arranged in the interior of an annular head rigidly connected to the stick. An annular body is guided adjustable relative to the lamp on the annular head.
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