Firearms – Muzzle making – attaching or repair
Reexamination Certificate
2000-02-22
2001-09-18
Carone, Michael J. (Department: 3641)
Firearms
Muzzle making, attaching or repair
C042S116000
Reexamination Certificate
active
06289624
ABSTRACT:
FIELD OF THE INVENTION
The invention herein pertains to devices for sighting guns and particularly pertains to laser sighting devices as are used with rifles.
DESCRIPTION OF THE PRIOR ART AND OBJECTIVES OF THE INVENTION
As laser beams are generally considered to travel in a straight line it is desirable to use lasers for aligning gun sights for bullet paths and other trajectories. Kits are currently available for placing a relatively low power, short wave length laser into the bore of a rifle barrel which is then pointed at a target. The gun sights can then be adjusted accordingly. Such prior laser devices generally employ a slotted, expandable arbor which, at one end threadably receives a laser containing mandrel. The other or opposite end of the arbor, distal of the mandrel includes a threaded adjusting member which is turned before insertion into the gun barrel to cause the arbor to expand to closely fit the gun barrel bore. However, if the adjusting member is overly tightened, the arbor expands too much and cannot be placed within the barrel. If the threaded member is tightened less than the optimum, then there is “play” between the arbor and the gun barrel, creating an inaccurate or distorted sighting. It has been difficult, even by experienced users to accurately expand the arbor to its optimum before insertion, and satisfactory arbor expansion is only obtained after many attempts, as the arbor must be removed for adjustment purposes.
Thus, with the known problems and disadvantages of prior art laser gun sighting alignment devices, the present invention was conceived and one of its objectives is to provide a laser bore sight device which is easy to properly install in a gun barrel.
It is yet another objective of the present invention to provide a laser bore sight device for a gun which allows the user to readily secure and adjust the device while in the bore of the gun barrel.
It is still yet another objective of the present invention to provide a method for sighting a gun which utilizes a laser bore sight device having an arbor containing a conically-shaped well in communication with a threaded shaft for receiving a mandrel stud.
Various other objectives and advantages of the present invention will become apparent to those skilled in the art as a more detailed description is set forth below.
SUMMARY OF THE INVENTION
The aforesaid and other objectives are realized by providing a mandrel containing a battery operated laser and which includes a threaded stud at the end opposite the laser. The threaded stud is received within a slotted conical shaped well within a polymeric arbor. A threaded shaft communicates with the conical well. By tightening the mandrel into the arbor threaded shaft by turning the mandrel in a clockwise direction, the slotted arbor expands radially for frictionally securing the arbor in a gun barrel bore after the arbor is initially placed therein.
The method of use employs placing the arbor with the mandrel attached into the bore of a rifle barrel and, thereafter by rotating the mandrel in a clockwise direction relative to the arbor, the arbor expands and is securely positioned therein. The rifle can then be pointed at a target and the laser activated. The gun sights are then adjusted to coincide with the laser beam to insure shooting accuracy. In order to remove the device from the gun barrel the mandrel is rotated in a counter-clockwise direction relative to the arbor, allowing the arbor to contract radially, whereby the arbor and mandrel can then easily be slidably removed.
REFERENCES:
patent: 3112567 (1963-12-01), Flanagan
patent: 4750269 (1988-06-01), Townsend et al.
patent: 4825258 (1989-04-01), Whitson
patent: 5150527 (1992-09-01), Knoster
patent: 5432598 (1995-07-01), Szatkowski
patent: 5446535 (1995-08-01), Williams
patent: 5448834 (1995-09-01), Huang
patent: 5454168 (1995-10-01), Langner
LASERLYTE BORE ALIGNMENT KIT advertisement (http://store.yahoo.com/sportsmansguide/lasboralkit.html.*
APPLIED LASER INTERNET CATALOG (http://www.appliedlaser.com).*
LASERLYTE BORE ALIGNMENT KIT Advertisement (http://www.tackletogo.com).*
Laserlyte Bore Alignment Kit brochure, 1 page (undated).
Lasermate Corporation specification letter, 1 page, dated Oct. 20, 1999.
Hughes Jeffrey T.
Rogers Christopher R.
Saintsing Jimmy R.
Severt Gordon S.
Carone Michael J.
Chambers Troy
Hughes Product Company, Inc.
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