Linear motion device and lens drive device
US8373939B2 · kind B2 · utility
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2Claims
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Assignee
Inventors
Key dates
| Filing date | Jul 8, 2010 |
| Grant date | Feb 12, 2013 |
| Priority date | — |
| Expiry date | Apr 14, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B7/08582
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A linear motion device includes a guide shaft. A to-be-moved member is supported on the guide shaft, and is linearly movable along the guide shaft. A lead screw extends parallel to the guide shaft. A clamper meshes with the lead screw. The clamper moves as the lead screw rotates. An intermediate member is provided between the to-be-moved member and the clamper. An urging member operates for urging the to-be-moved member toward the clamper and enabling the intermediate member to be seated between the to-be-moved member and the clamper in a manner such that an axis of the intermediate member is nonparallel to the guide shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.