Dual mode pneumatic tool

Details Dual mode pneumatic tool Dual mode pneumatic tool

1995-07-28

1997-11-18

Hail, III, Joseph J.

Elongated-member-driving apparatus

With interlock means

227130, B25C 104

Patent

active

056878974

ABSTRACT:
A single cycle/multiple cycle dual mode pneumatically driven fastener driving tool utilizes a resettable valve, trigger apparatus, work contact element (WCE) and a mode selecting trigger blocking pin. With the pin in place, the trigger must be released then depressed for each tool actuation. The tool is actuated only when the WCE is also depressed but without regard to the sequence of trigger and WCE depression. In a multiple cycle mode, the pin is removed and the actuation valve is reset either by trigger extension, or by WCE extension for "bottom contact" operation. The tool can be activated by full trigger release and depression while the WCE is held against a work surface. No particular sequence of WCE and trigger depression is required in this second mode. Apparatus and methods are disclosed.

REFERENCES:
patent: 4264028 (1981-04-01), Austin
patent: 4629106 (1986-12-01), Howard et al.
patent: 5083694 (1992-01-01), Lemos
patent: 5137197 (1992-08-01), Bauer
patent: 5522532 (1996-06-01), Chen
patent: 5551620 (1996-09-01), Vallee

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