Pulley for poly-v belt
US4840607A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 26, 1987 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | Jun 26, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H55/44
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A weight reduced pulley for "K" type poly-v belt systems includes a body having an outer cylindrical surface. A plurality of raised ribs extend from said surface and run circumferentially around said surface. A plurality of trough areas are positioned between the ribs. The ribs and troughs corresponding to the location of indented and raised areas, respectively, on a poly-v belt. The ribs have a cross sectional profile extending radially traverse of the axis of rotation of the pulley, each rib being bounded by a pair of planar side walls at relative angles of 40.degree.+0.5.degree.. The side walls terminate in a 140.degree. arc having a radius of 0.5 mm, the outermost point of said arc terminating 0.96 mm inward of the intersection of the upward projections of the planar side walls or apex. The planar side walls extend radially inward at least 3.44 mm from said apex. The trough areas are bounded by the outer cylindrical surface of said pulley, said surface being 3.57 mm from said apex. The outer cylindrical surface is flattened in cross section in said trough areas and a fillet having a radius from 0.25 to 0.35 mm forms a transition between said planar side walls and said flattened…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.