Fastener driving tool

Details Fastener driving tool Fastener driving tool

1994-12-02

1995-08-15

Smith, Scott A.

Elongated-member-driving apparatus

With means to move or guide member into driving position

Including supply magazine for constantly urged members

173211, 173212, B25C 104

Patent

active

054411920

ABSTRACT:
A fastener driving tool prevents the tool from twice striking, so-called double-driving in a single driving operation. A portion closing the lower end of a cylinder of the tool is formed with an annular recess to receive a ring bumper as a shock absorber of a piston. The recess has a sufficient depth to move a lower portion of the bumper downward and upward. The bumper is fittingly pressed into the recess to form an air chamber in the recess closed by the lower end of the bumper. A check valve is positioned between the air chamber and a supply of the pressurized air to feed the pressurized air to the air chamber so that the pressurized air is further compressed by the bumper which is downwardly moved by the abrupt downward movement of the piston. Thus, greater reaction force is applied from the air chamber to the lower portion of the bumper so as to prevent a driver of the tool from the double-driving.

REFERENCES:
patent: 3901130 (1975-08-01), Lange
patent: 4320864 (1982-03-01), Novak et al.
patent: 4401251 (1983-08-01), Nikolich
patent: 5020712 (1991-06-01), Monacelli
patent: 5131579 (1992-07-01), Okushima et al.

Affiliated with

Also associated with

Rating

Fastener driving tool does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fastener driving tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fastener driving tool will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2176246