Elastomeric driver return assembly for an electro-mechanical fastener driving tool
US4544090A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1983 |
| Grant date | Oct 1, 1985 |
| Priority date | — |
| Expiry date | Mar 29, 2003 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25C1/06
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A driver return assembly for an electro-mechanical fastener driving tool. The tool is of the type provided with a driver which is frictionally moved through a working stroke by means of an electrically driven flywheel which presses the driver against a support element, such as a counter rotating flywheel, a low inertia roller, or the like. The driver return assembly comprises at least one elastomeric cord being attached at one of its ends to the driver and at the other of its ends to an anchor within the tool. The at least one elastomeric cord, between its ends, passes about at least two pulleys. One of the pulleys is mounted on a spring supported shaft to compensate for stretch of the at least one elastomeric cord to assure that the driver is returned to its normal, retracted position after each working stroke.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.