Backlash-free cam control
US4322151A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 1980 |
| Grant date | Mar 30, 1982 |
| Priority date | — |
| Expiry date | Dec 10, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H53/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The invention contemplates a backlash-free cam and follower mechanism characterized by application of constant backlash-relieving resilient loading regardless of change in cam slope and regardless of displaced position of cam-driven structure with respect to the total span of possible cam-driven displacement. This result is achieved by use of two cam followers, one of which is the control follower (tracking a control cam) and the other of which is an auxiliary follower (tracking an auxiliary cam), there being resilient preloading to urge both cam followers for constant tracking of their respective cams, and the two cams being so devised with respect to each other that the orientation and spacing of the cam followers with respect to each other will remain constant throughout the full range of possible cam-driven displacement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.