Supports – Resilient support – Including spring zone understructure
Patent
1998-04-20
2000-01-18
Ramirez, Ramon O.
Supports
Resilient support
Including spring zone understructure
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.
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Le Tan
Ramirez Ramon O.
Wong David W.
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