Moving linear piezoelectric motor for vehicle applications
US5780957A · kind A · utility
22Cited by
10References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1996 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Nov 12, 2016 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/55
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A piezoelectric moving linear motor consists of three piezoelectric actuators which are controlled relative to each other. One piezoelectric actuators causes two blocks to move away from each other in opposition to a spring force. The other two piezoelectric actuators selectively clamp a block to a guide shaft. By cyclically controlling the actuation of the three piezoelectric actuators, the motor is able to move the blocks axially along the guide shaft. Preferably, a vehicle component such as a window is fixed to one block and is caused to move along the guide shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.