Protective means for attachments affixed to electrically operate

Details Protective means for attachments affixed to electrically operate Protective means for attachments affixed to electrically operate

1980-10-27

1982-04-13

Swann, III, Glen R.

Communications: electrical

Condition responsive indicating system

Specific condition

5424, 200 6143, 340540, G08B 2100

Patent

active

043250610

ABSTRACT:
The attachment includes switch means, a spring loaded switch actuator overlying and coextensive with the upper surface of the attachment, an electric control interconnected with the power supply to the bed and said switch so that elevation of said bed is automatically terminated upon contact of said switch actuator with an obstacle above the bed.

REFERENCES:
patent: 3220019 (1965-11-01), Nelson
patent: 3709372 (1973-01-01), Alexander
patent: 3712965 (1973-01-01), Dalton
patent: 3774149 (1973-11-01), Bennett
patent: 3866004 (1975-02-01), Nawrocki
patent: 3875356 (1975-04-01), Heim et al.
patent: 4060160 (1977-11-01), Lieber

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