Dynamic seal assembly with a valve and a diaphragm function
US12196234B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 9, 2021 |
| Grant date | Jan 14, 2025 |
| Priority date | — |
| Expiry date | Nov 24, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H63/3023
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A seal assembly includes a piston and a seal. The piston includes a first radial piston wall, a second radial piston wall extending radially further than the first radial piston wall, a groove formed between the first radial piston wall and the second radial piston wall, and a bypass line extending at least partially around the groove. The seal disposed in the groove. The seal includes a first sealing lip extending radially outward beyond the second radial piston wall and a second sealing lip. The second sealing lip is sealed against the first radial piston wall to seal an entry space when acted on by a pressure below a predetermined pressure limit pG, and pivotable radially inward to open the entry space when acted on by a pressure above the predetermined pressure limit pG.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.