Device with a limit switch and trunnion
US7914076B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 2008 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Aug 1, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61G2203/726
- WIPO fieldMedical technology
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.