Ball screw and seal used therein
US9939055B2 · kind B2 · utility
1Cited by
7References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 2014 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Nov 27, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H57/0497
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
There are provided a ball screw that more efficiently prevents accumulation and scattering of extra grease in a nut and a seal used in the ball screw. In order to do that, a grease reservoir portion is provided on an inner peripheral surface of a seal provided at an end of a nut on rear side of a moving direction of a ball screw so as to form a space with respect to a screw shaft. The grease reservoir portion is open to an outer peripheral surface of the seal and communicates with slits formed on the outer peripheral surface of the seal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.