Hydraulic turning joint
US5529347A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 17, 1994 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Oct 17, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L39/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Disclosed is a hydraulic turning joint which has substantially reduced longitudinal length with an equal number of oil passages therein and can reduce the mounting space in the equipment and which improves the work efficiency, accuracy and reliance of the product. The hydraulic turning joint includes a shaft, a housing for rotatably and closely accommodating the shaft, at least one oil supply passage formed in the shaft, said oil supply passage longitudinally passing through the shaft, and at least one oil discharge passage formed on the top of the the housing, said oil discharge passage being correspondingly communicated with at least one oil supply passage, wherein each of said oil supply passages are transversely communicated with each of said oil discharge passages on the same plane. The hydraulic turning joint further includes sealing means installed between the oil discharge passages within the housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.