Spring wire gripper jaw
US4921294A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 3, 1988 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | Jun 3, 2008 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H29/003
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A gripper assembly for gripping sheet materials such as a folded newspaper includes a fixed jaw and a movable jaw for engaging opposite surfaces of the article. The jaws are supported on a base block for pivotal movement relative to each other. The movable jaw is made of spring wire and includes a pair of gripping tangs, a pair of spring coils associated one with each gripping tang, and a pressing element extending between the gripping tangs. The movable jaw is pivotally mounted on a shaft about which the spring coils are wrapped. The spring coils bias the clamp arm as a whole, and also the gripping tangs, independently of one another, into clamping relation toward the fixed clamp arm. The pressing element clamps and presses the lower folded edge of a folded newspaper being held in the gripper assembly. The movable clamp arm is made from a single continuous piece of spring wire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.