Ball swivel joint for an excavator or the like
US4417773A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1978 |
| Grant date | Nov 29, 1983 |
| Priority date | — |
| Expiry date | Nov 13, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2350/26
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A swivel joint has a first U-shaped ring member including two first leg portions which bound a recess therebetween, and a secnod T-shaped ring member having a second leg portion which is received in the recess bounded by the first leg portions. Each of the first leg portions has a first semi-spherical groove, and a second leg portion has two second semi-spherical grooves each forming with a respective first semi-spherical groove a spherical groove. Two rows of balls are provided, each received in a respective one of the thus-formed spherical grooves. The first leg portions may have through-going passages through which the balls can be inserted. The passages may be closed by inserts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.