Quick release mechanism for oscillating saw blade
US4106181A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 9, 1976 |
| Grant date | Aug 15, 1978 |
| Priority date | — |
| Expiry date | Aug 9, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/7071
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
One end of an oscillating saw blade has a notch, and spaced from the notch is a hole through the blade. The head of the tool has a slot having a shaft extending through the rear end of the slot for receiving the notch. A pin extends partially into the slot for receiving the hole. A closer in the form of a cam is cammed into and out of the slot for moving the hole on the blade onto the pin and moving the end of the blade having the hole and the notch against the bottom of the slot. The cam closer is locked in place to lock the blade in the slot. A handle is attached to the cam closer for manually rotating the cam, and the cam has an overcenter orientation where the resilient forces from the blade pushing on the cam tend to rotate the cam to a closed position. A stop is provided to intersect the handle and stop it in its locked position. A jaw of resilient material may be provided between the blade and the bottom of the slot to spread forces from the cam on the blade. The jaw is slightly curved so that camming tends to straighten the jaw, but the tendency for the jaw to resume its slightly curved orientation creates a force on the cam urging the cam to its overcenter position. The ja…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.