Pneumatic nail gun

Details Pneumatic nail gun Pneumatic nail gun

2007-11-06

2007-11-06

Smith, Scott A. (Department: 3721)

Elongated-member-driving apparatus

With interlock means

C227S130000

Reexamination Certificate

active

11551070

ABSTRACT:
A pneumatic nail gun has a gun body having a main air housing; a cylinder fixed in the main air housing; a hitting piston slidably movable in the cylinder; a dish-shaped piston disposed at a top end portion of the cylinder; an upper slidable sleeve valve disposed at a top portion of an out peripheral surface of the cylinder, which is driven to move upward by the high pressure air in the main air housing; and a lower slidable sleeve valve disposed at a lower portion of an outer peripheral surface of the cylinder, which is driven to move downward for guiding the high pressure air into the cylinder for upward deposition of the hitting piston when the upper slidable sleeve valve moves upward, and is driven to upward reposite when the hitting piston moves to its upper dead center.

REFERENCES:
patent: 3190187 (1965-06-01), Doyle
patent: 3504840 (1970-04-01), Wandel et al.
patent: 3657968 (1972-04-01), Lange
patent: 3715069 (1973-02-01), O'Conner
patent: 4030655 (1977-06-01), Rothfuss et al.
patent: 4448338 (1984-05-01), Graf et al.
patent: 4523646 (1985-06-01), Doyle et al.
patent: 4909419 (1990-03-01), Yamada et al.
patent: 5020712 (1991-06-01), Monacelli
patent: 6145727 (2000-11-01), Mukoyama et al.
patent: 6164510 (2000-12-01), Deieso et al.
patent: 6520397 (2003-02-01), Moeller

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