Fluid pressure operated impact mechanism
US4088062A · kind A · utility
Inventors
Key dates
| Filing date | Apr 2, 1976 |
| Grant date | May 9, 1978 |
| Priority date | — |
| Expiry date | Apr 2, 1996 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25D9/14
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A fluid pressure operated impact mechanism of the type having a reciprocating working member guided for movement along an axis toward and away from a stop member, a pressure chamber between the working and stop members to receive a fluid pressure medium to exert forces separating the two members, and pressure sealing means for maintaining the pressure chamber sealed as the working member and stop member separate. The mechanism is characterized by a sealing arrangement which requires few precision parts yet is applicable to a variety of different devices. In the sealing arrangement, the pressure chamber is formed in the surface of at least one of the members, so that the two members meet along a separating line at the periphery of the pressure chamber. One of the members forms a support wall or flange extending in an axial direction along the separating line, and a flexible sealing means extends from the support wall of the one member to the other member, thereby effecting a seal therebetween. The sealing means is supported radially against the outward force of the pressure medium by the support wall, and is arranged to be elastically deformed in the axial direction by the pressure …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.