Hydraulic and earth engineering – Earth treatment or control – Rock or earth bolt or anchor
Reexamination Certificate
2008-05-09
2010-02-02
Lagman, Frederick L (Department: 3672)
Hydraulic and earth engineering
Earth treatment or control
Rock or earth bolt or anchor
C405S302400
Reexamination Certificate
active
07654775
ABSTRACT:
A soil nail launching device and method are provided wherein the launching device includes an improved configuration for the protective shroud and an improved configuration for a connection between the breach and barrel of the launching device. For the protective shroud, a plurality of removable shroud plates are provided to ease maintenance of the shroud plate, as well as to provide more consistent pressure release after the launcher has been fired. The improved breach and barrel design includes a connection that does not reduce the area of the annular space that is evacuated during firing of the device, thereby optimizing the available volume of air to be transferred to the breach for launching the soil nail through the barrel.
REFERENCES:
patent: 3807182 (1974-04-01), Schnabel, Jr.
patent: 5017047 (1991-05-01), Myles et al.
patent: 5044831 (1991-09-01), Myles et al.
patent: 5114279 (1992-05-01), Bjerngren et al.
patent: 5913252 (1999-06-01), Castagner et al.
patent: 6565288 (2003-05-01), McCallion
patent: 6874975 (2005-04-01), Hilfiker et al.
patent: 7226247 (2007-06-01), Barrett et al.
patent: 7338233 (2008-03-01), Barrett et al.
patent: 7384217 (2008-06-01), Barrett et al.
patent: 0239258 (1987-09-01), None
patent: 540059 (1993-05-01), None
patent: 1580142 (1980-11-01), None
Examination Report issued by the Intellectual Property Office of New Zealand for Patent Application No. 576901, dated May 14, 2009.
Lagman Frederick L
R&B Leasing, LLC
Sheridan Ross PC
LandOfFree
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