Joint structure of annular member and shaft member
US5032036A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 8, 1989 |
| Grant date | Jul 16, 1991 |
| Priority date | — |
| Expiry date | Dec 8, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/70
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A joint structure of an annular member and a shaft member softer than the former is produced by PA1 (a) providing a shaft member with an oil spreading over its circumference, the shaft member having a plurality of discrete grooves, on its circumference in an inclined angular configuration about the axis of the shaft member, and PA1 (b) press fitting the annular member to the bore of the annular member with an interference such that the inner periphery of the annular member bore meshingly expands into the grooves. Press fitting proceeds under resilient deformation of the inner periphery of the annular member in the boundary friction state. A continuous oil film remains on the mating surfaces while securing firm joint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.