Motion control apparatus with backlash reduction
US7131518B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 2003 |
| Grant date | Nov 7, 2006 |
| Priority date | — |
| Expiry date | Nov 14, 2023 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B15/262
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A motion controller for use with a rod (10A, 10B, 10C) has a backlash reducer (88A, 88B, 88C) that substantially reduces or eliminates the space created after manufacturing parts with specified tolerance dimensions to substantially reduce or eliminate backlash. The backlash reducer (88A, 88B) can be in the form of a holder such as an internal retaining ring (78) and a shim (36), a threaded cap (38), or the like to accommodate various part size variances due to manufacturing tolerances. Alternately, the end cap (45) of the motion controller (10C) can have an outside thread (41) that mates to an inside thread (43) of the inside surface (54) of a housing (29). The motion controller (10A, 10B, 10C) has a friction collar (12) to hold the rod (14) under the action of balls (16) and a piston (18). The motion controller (10A, 10B, 10C) can be fluid powered with a fluid such as air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.