Transmission device for a clamp
US5927700A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1998 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Jul 20, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H25/2204
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A clamp rod has an outer peripheral surface provided with a first concaved passage communicated in entirety of the outer peripheral surface and in the shape of sawtooth. The first concaved passage comprises first spiral grooves in the shape of a multi-start thread and communication grooves. A sleeve externally fitted onto the clamp rod has an inner peripheral surface provided with a second concaved passage corresponding to the first concaved passage. A number of rolling balls are charged between the first concaved passage and the second concaved passage. The clamp rod and the sleeve are moved in a direction of an axis relatively to each other, thereby rotating the clamp rod around the axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.