Cylinder-piston combination, particularly for high-pressure application
US4685382A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 1985 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | May 28, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J10/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A deformable sealing member, particularly a sealing tube, which is at least partially elastic is secured at two distant locations to two working members, e.g. to a piston part and a cylinder part, respectively, to form a leakproof working chamber for pressurizing therein a working fluid or for transferring the power of a pressurized working fluid introduced in the working chamber to said working members, the apparatus thus being able to operate as a pump or motor, respectively. The sealing member is supported against the working pressure in said chamber by a support surface, and between said sealing member and said support surface there is a low-friction component which is constituted by a solid material, e.g. a sliding layer, secured to the sealing member or to the support surface, or by a fluid lubricant introduced in a flow passage formed between the sealing member and the support surface, in the latter case there being a continuous or intermittent stream of lubricant through this lubricant flow passage at least during high-pressure strokes of the working chamber to a low-pressure side. The pressure in the lubricant flow passage is balanced against the pressure of the working fl…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.