Sensor unblocking ramps
US3983979A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 13, 1975 |
| Grant date | Oct 5, 1976 |
| Priority date | — |
| Expiry date | Aug 13, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T74/19284
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Shiftable gearing including spring loaded means and blocker means for effecting engagement of clutch teeth. In a transmission having a main shaft and at least one countershaft, and including pairs of shiftable gears arranged on and cooperatively between said shafts, there are provided spring loaded clutches for effecting connection to one of said shafts of a selected one gear of a selected one of said pairs of said gears upon the achievement of substantial synchronization between such gear and such shaft. Blockers are provided for protecting the clutch teeth from excessive wear during such shifting and malfunctioning of said blockers is prevented in part by providing light frictional drag means between each of said blockers and the portion of said clutches rotatable with said shaft and in part by angling the leading surfaces of the blocker teeth an amount sufficient to effect an unblocking under one limited set of conditions but insufficient to prevent blocking under normal operating conditions. Said drag acts axially to cause said blockers to bear against the gear cone and thereby to rotate therewith promptly upon the commencement of an engaging or clutching operation. Said anglin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.