Variable loading roller
US4841792A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 1988 |
| Grant date | Jun 27, 1989 |
| Priority date | — |
| Expiry date | Jan 21, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/2107
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic loading roller for transmitting torque in traction drive devices in manipulator arm joints includes a two-part camming device having a first cam portion rotatable in place on a shaft by an input torque and a second cam portion coaxially rotatable and translatable having a rotating drive surface thereon for engaging the driven surface of an output roller with a resultant force proportional to the torque transmitted. Complementary helical grooves on the respective cam portions interconnected through ball bearings interacting with those grooves effect the rotation and translation of the second cam portion in response to rotation of the first.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.