Tool driving or impacting – Impacting devices – Hammer head driven by pulsating fluid pressure
Reexamination Certificate
2011-01-04
2011-01-04
Carter, Monica S (Department: 3727)
Tool driving or impacting
Impacting devices
Hammer head driven by pulsating fluid pressure
C173S001000, C015S093100
Reexamination Certificate
active
07861798
ABSTRACT:
A hammer device in the form of a needle gun. The gun includes a cylinder housing containing a cylinder, in which a flying piston is displaced and an anvil, against which the piston strikes. A needle carrier is located on the anvil, and the needles of the gun are held in the carrier so that the needles can be longitudinally displaced. To reduce the wear on the needle carrier and to preserve the needle heads of the needles, the needle carrier is configured from several layers, at least in the vicinity of the guide plate. The layers are of alternating hard and soft material.
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Co-Pending U.S. Appl. No. 10/548,158, filed Sep. 18, 2006; inventor René Amherd; title Press Device.
Co-Pending U.S. Appl. No. 10/581,390, filed Apr. 12, 2007; inventor René Amherd; title Electrically Operated Pressing Tool.
Carter Monica S
Newton Stephanie
Pauley Peterson & Erickson
Von Arx AG
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