Adjustable length punch set assembly
US5329835A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1992 |
| Grant date | Jul 19, 1994 |
| Priority date | — |
| Expiry date | Oct 7, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T83/9473
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An adjustable length punch set assembly for adjusting the overall length of a punch having a punch driver and punch holder that are axially adjustable relative to each other and retained at least in part within a punch guide sleeve and biased axially with respect thereto by a biasing spring. A locking push button is positioned axially within and accessible through a hole of the punch driver, the push button being moveable between a first position for locking the punch driver with respect to the punch holder to prevent length adjustment by rotation of mutually engageable threaded portions thereof, and a second position allowing relative rotation of the punch driver and punch holder along the mutually engageable threaded portions to effect length adjustment. The push button includes one or more detents formed thereon, the detents being engageable with one or more first detent stop(s) formed in the punch driver and second detent stop(s) formed in the punch holder. The number of second detent stops in the punch holder preferably is less than the number of first detent stops of the punch driver, such that the number of first detent stops in an integer multiple of the one or more detents…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.