Safety edge for a door

Details Safety edge for a door Safety edge for a door

1987-08-17

1988-11-15

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Feeler moves into detecting contact with object

H01H 316, E05F 1500

Patent

active

047851430

ABSTRACT:
A safety door edge switch including a flexible sheath, an internal resiliently compressible foam formation in the sheath and providing fluid communication therealong, a relatively rigid transverse structure at one region in the sheath and containing a pressure sensitive switch element communicating with the inner formation for sensing pressure throughout the sheath and a pair of spaced confronting flexible contact sheaths engageable to provide a secondary switch.

REFERENCES:
patent: 3315080 (1967-04-01), Miller
patent: 4045631 (1977-08-01), Dann
patent: 4051336 (1977-09-01), Miller
patent: 4066851 (1978-01-01), White et al.
patent: 4396814 (1983-08-01), Miller

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