Conveyor apparatus, especially for printed products
US4381056A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 15, 1981 |
| Grant date | Apr 26, 1983 |
| Priority date | — |
| Expiry date | Jan 15, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2301/44765
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
An article conveyor apparatus is disclosed wherein the gripper clamps possess a movable clamping tongue and a fixed clamping tongue which forms part of a housing. The movable clamping tongue is formed of one-piece with a spiral spring. The latter is wound about a hollow shaft rotatably mounted in the housing. The hollow shaft is rigidly connected for rotation with an arm or lever carrying at its end a roller. A part of the hollow shaft is constructed as a blocking wheel of a blocking mechanism. This blocking wheel is provided with a gap into which engages, in the latching position, the one end of a blocking pawl pivotably mounted in the housing. Upon travel of the roller upon a bracket or cam or the like the hollow shaft is rotated in a predetermined direction, whereby the movable clamping tongue is moved towards the other clamping tongue. If both clamping tongues are brought together then during further rotation of the hollow shaft the spiral spring is tensioned. The tensioned spiral spring exerts a closing force upon the movable clamping tongue. Retrorotation of the hollow shaft is prevented by the blocking pawl which has latched into the gap. To open the gripper clamp the blocki…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.