Manufacture of piston rings
US5502880A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 6, 1994 |
| Grant date | Apr 2, 1996 |
| Priority date | — |
| Expiry date | Sep 6, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/5197
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A machine for manufacturing piston rings from the metal strip (10). The machine comprises feeding means (12) for feeding the strip, shaping means (14, 16, 18, 20) for shaping successive portions of the strip into piston rings of a desired shape, and severing means (22) operable to sever the piston rings from the remainder of the strip. The machine also comprises displacing means (28) operable during each operation of the severing means (22) to move the severing means to substantially reduce the relative movement between the severing means and the point on the strip (10) at which the strip is severed. The severing means (22) is moved along a linear path which extends substantially tangentially to the path of said point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.