Static cup seal assembly for master cylinder end
US4781024A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1986 |
| Grant date | Nov 1, 1988 |
| Priority date | — |
| Expiry date | Feb 21, 2006 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T11/236
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A master cylinder for use in automotive hydraulic brake device has a pressure liquid chamber formed at one side of the larger diameter portion of the piston and a supply liquid chamber formed between the other side of the large diameter portion of the piston and a ring-shaped cup seal. The inner lip of the ring-shaped cup seal is integrally formed at its distal end with an annular projection coming into contact with a cup seal locking member, which is inserted in the large diameter portion of the cylinder and serves to prevent a movement of the ring-shaped cup seal towards the supply liquid chamber, so that the deformation of the inner lip is restrained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.