90 degrees turning device with means for constant angular velocity
US4886155A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Aug 9, 1988 |
| Grant date | Dec 12, 1989 |
| Priority date | — |
| Expiry date | Aug 9, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65G47/244
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A turning device including a moving member movable along a linear path, and a turning member which is pivotable through an angle of 90 degrees about an axis perpendicular to the linear path during movement of the turning member along the linear path. A first and a second cam follower are provided on respective first and second surfaces of the turning member. A first cam provided on the second surface of the turning member has a first straight cam surface inclined to the linear path and engageable with the first cam follower, while a second cam spaced apart from the first cam in a direction parallel to the axis of of the turning member has a second straight cam surface engageable with the second cam follower. The second cam surface is inclined to the linear path such that the second cam follower is moved perpendicularly to the linear path in the same direction as the first cam follower as the moving member is moved. The first and second cams are positioned such that an engaging action between the second cam follower and the second cam surface is initiated when an engaging action between the first cam follower and the first cam surface is terminated. Either the axis of rotation of th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.