Power Door sensing strip

Details Power Door sensing strip Power Door sensing strip

1990-12-27

1992-02-11

Scott, J. R.

Electricity: circuit makers and breakers

Special application

Feeler moves into detecting contact with object

H01H 316

Patent

active

050877992

ABSTRACT:
A power door sensing strip incorporates a pair of electrical conductors positioned in a sealed plastic tube and supported in a molded foam block so that external forces result in contact between the conductors. Reliable operation is afforded by the absence of internal supports between the conductors. Further, short circuits caused by moisture and contaminants entering the foam through breaks in an outer jacket are eliminated. Trimmable tails and electrical connections on the ends of the strip enable the strip to be used with doors of varying widths and for non-handed installation.

REFERENCES:
patent: 2843694 (1958-07-01), Bertaux
patent: 3133167 (1964-05-01), Miller
patent: 3315050 (1967-04-01), Miller
patent: 3754176 (1973-08-01), Miller
patent: 4396814 (1983-08-01), Miller et al.
patent: 4487648 (1984-12-01), Miller et al.
patent: 4684768 (1987-08-01), Sackmann et al.
patent: 4785143 (1988-11-01), Miller
patent: 4954673 (1990-09-01), Miller

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