Automatic fast take up for use with ratchet hand tool
US4809571A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 19, 1987 |
| Grant date | Mar 7, 1989 |
| Priority date | — |
| Expiry date | Aug 19, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB25B27/146
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A multiple stroke hand tool (2) comprises a ram (18) slidably mounted to a housing frame (44). A compact rotatable ratchet member (30) is connected to the ram (18) and pivotally mounted to the housing frame (44) such that as operating means (90) are moved, a drive pawl (32) engages the ratchet member (30) causing the ratchet member (30) to rotate, which in turn causes the ram (18) to move between an open position and a closed position. An automatic fast take-up member (60) is provided which cooperates with the operating means (90). This type of automatic fast take-up allows minimal operator input, enabling the operator to better perform the other operation required. This fast take-up member (60) also insures that terminals are properly positioned with respect to the ram (18), thereby providing a much more reliable operation of the hand tool (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.