Leak-proof hydraulic device for supporting a barber's chair

Supports – Resilient support – Including spring zone understructure

Patent

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Details

60477, 248404, 297 71, 417443, F16M 1300

Patent

active

060151307

ABSTRACT:
The hydraulic device for raising and lowering seat of the barber's chair has a main housing section and a lower section. A sliding plunger is slidably mounted in a sleeve extending between the lower section and the top cover of the main housing section. An oil pump is operative to force the oil contained with the main housing section into a channel in the lower section to the bottom of the sleeve for raising or lowering the sliding plunger. The seat of the barber's chair is mounted to the top of the sliding plunger. The joint between the lower section and the main housing section is permanently sealed with a metal compound by welding, brazing or soldering.

REFERENCES:
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patent: 4048800 (1977-09-01), Cancilla
patent: 4108416 (1978-08-01), Nagase et al.
patent: 4136908 (1979-01-01), Crayne

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