Device with a limit switch and trunnion

Details Device with a limit switch and trunnion Device with a limit switch and trunnion

2011-03-29

2011-03-29

Cranmer, Laurie K (Department: 3636)

Chairs and seats

Movable bottom

Tiltable

C297S316000, C297S310000, C297S353000

Reexamination Certificate

active

07914076

ABSTRACT:
Dental devices with cylinders, trunnions, and limit switches, and a method are provided. The dental devices include a cylinder and a trunnion having a cavity and an outer surface. A portion of the cylinder is slidably mounted within the cavity of the trunnion, and a portion of the cylinder protrudes out of the trunnion. The limit switch is coupled to the outer surface of the trunnion, with the limit switch is operable to contact the cylinder. Separation of the limit switch and the cylinder causes actuation of the limit switch, and the actuation of the limit switch inhibits a downward movement of the device. Alternatively, the limit switch may be coupled to the portion of the cylinder that protrudes out of the trunnion, with the limit switch operable to contact the trunnion. As such, separation of the limit switch and the trunnion causes actuation of the limit switch.

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