Seal assembly
US6173961A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 6, 1999 |
| Grant date | Jan 16, 2001 |
| Priority date | — |
| Expiry date | Apr 6, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J15/3216
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An improved seal assembly (142) is used in a power steering system (10) having an axially reciprocatable shaft (36). The seal assembly (142) has an inner side (164) which is exposed to hydraulic fluid. The seal assembly (142) includes a flexible lip (148) having a circular line (152) of minimum diameter. An annular coil spring (158) is disposed in engagement with a side of the flexible lip opposite from the line (152) of minimum diameter. The coil spring (158) has a circular central axis (170) which is axially offset from a plane containing the line (152) of minimum diameter of the flexible lip (148). The circular central axis (170) of the coil spring (158) is offset from the line (152) of minimum diameter of the flexible lip (148) in a direction toward the inner side (164) of the seal assembly (142) prior to installation of the seal assembly in the power steering system (10).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.