Method of making low friction finger follower rocker arms
US4872429A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1988 |
| Grant date | Oct 10, 1989 |
| Priority date | — |
| Expiry date | Jul 18, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01L2303/00
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A low friction finger follower rocker arm is fabricated from flat metal strip sheet stock having a stamped configuration with a centralized opening adapted to be bent later into a channel; the shaping and hardening of the stock section is carried out prior to such bending. The method comprises: (a) (i) shaping the stock to have a pair of aligned journal openings, a pivot surface at one end, a stud contacting surface at the other end, and a pair of grooves aligned with the extremities of the centralized opening and containing the surface therebetween, (ii) locally hardening the surfaces and the edges of the opposed openings; (b) bending the shaped stock along the grooves to form a partial channel having side walls with an included angle of no greater than 40.degree. and with the journal openings approaching alignment on a common axis; and (c) inserting a journalized low friction wear assembly in the opposed journal openings, and then completing the bending of the stock so that the sides of the channel are substantially parallel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.