Load clamp having motor-powered screw-type clamping actuator capable of accurate positioning and high clamping force
US4605255A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 4, 1984 |
| Grant date | Aug 12, 1986 |
| Priority date | — |
| Expiry date | Dec 4, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66F9/183
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A carton clamp having a frame adapted to be mounted on a materials-handling machine, especially an automatically guided vehicle, includes clamp arms coupled directly together, independently of the frame, by motor-driven screw-type linear actuators which selectively open and close the arms. A centering assembly coupled to each clamp arm corrects for any imbalance of clamp arm speeds relative to the frame which may occur due to the fact that the screw actuators are free to move relative to the frame. The direct interconnection of the clamp arms by the screw actuators effectively doubles the clamping force which would otherwise be obtainable if the actuators were fixed to the frame.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.