Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3098303 A
Publication typeGrant
Publication date23 Jul 1963
Filing date11 Dec 1961
Priority date11 Dec 1961
Publication numberUS 3098303 A, US 3098303A, US-A-3098303, US3098303 A, US3098303A
InventorsPlisk Leonard N
Original AssigneeBausch & Lomb
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Fluorescent gun sight
US 3098303 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

33 241. 0F? 3.098.303 SR July 23, 1963 1.. N. PLISK 3,098,303


'2 25 l3 '5 2e 5 l7 2 I9 FIG. I


ATTORNEY United States Patent 3,098,303 FLUORESCENT GUN SIGHT Leonard N. Plisk, Hilton, N.Y., assignor to Bausch & Lomb Incorporated, Rochester, N.Y., a corporation of New York Filed Dec. 11, 1961, Ser. No. 158,350 2 Claims. (Cl. 33-52) This invention relates to a sighting device for guns and more particularly it relates to improvements in sights of the self-luminous type.

It is an object of this invention to provide a novel gun sight of the self-luminous type which is simple and sturdy and enhances the visibility of the critical aiming elements of the sight, especially during times of low light level.

Further objects and advantages reside in the details of construction and arrangement of parts, reference being had to the specification herebelow taken in connection with the accompaying drawing, wherein:

FIG. 1 is a perspective view of a gun sight embodying my invention;

FIG. 2 is a fragmentary side elevation of a gun having my novel gun sight mounted thereon; and

FIG. 3 is a cross-sectional view taken on the line 3-3 of FIG. 2.

Gun sights of the kind herebelow described are used as a substitute for the so-called iron sights and said sights comprise an elongated integrally molded body having 9. preferably round cylindrical portion 11 as shown in FIG. 1. Means for attaching the body 10 to the gun comprise a pair of longitudinal flanges 12 and 13 formed integrally with and along opposite sides of the cylindrical portion 11 of the body, said flanges having a flat surface 14 on which the body rests. On the upper sides of the flanges, steeply inclined surfaces 15 and 16 are formed whereon suitable clamping jaws 17 and 18 engage which are clamped thereon by any preferred means such as a bolt 19 and nut 20, as described hereinafter.

For the purpose of holding the gun sight body 11 on a gun barrel B, a mounting member 21 is provided having a transverse opening 21' through which said bolt 19 extends. Suitable anchor screws 22 and 23 are extended through free fitting openings 24 in the mounting member 21 and are threaded into the gun barrel B to retain the member on the barrel. It is contemplated that the mounting 21 may alternatively be constructed according to any of the laterally or vertically adjustable types of sight mountings.

Alignment of the sight body 11 on the mounting 21 is secured by forming a longitudinal slot 25 in the bottom surface 14 of the body and forming a flat key 26 on the mounting member 21 so as to fit snugly in the slot.

According to this invention, the body 11 is preferably formed together with the flanges 12 and 13 entirely by molding of a substantially clear plastic acrylic resin or similar material in one piece for simplicity and ruggedness of structure. A sighting element 27 formed of substantially clear fluorescent material having a diameter of about 2 to 3 mm. is inserted into an accommodating open- Patented July 23, 1963 ing 27' and secured therein coincident with a line of sight through the body 11 longitudinally whereby the target is sighted as shown in FIG. 2. It is preferred that the walls of the sight opening27' have a high light diflusing characteristic so that the fluorescent sighting element 27 is used to an optimum degree in forming a visible spot or line of fluorescent radiation.

In operation, light striking the sighting element 27 after traversing the body 11 or after entering the ends of the element 27 will cause said fluorescent material to glow and provide in elfect a mildly irridescent dot through which the target is seen. Because of the transparent quality of said plastic material in the body 11, the areas around the target may also be seen enough to be helpful in locating the target. Whenever the sighting element 27 is inclined to the line of sight or not aimed at the target, said irridescent dot appears as if elongated into a line and the apparent length of the sighting element or rod 27 is an indication of the amount of error in aiming. Because of this fact, the length L of the fluorescent sighting element 27 should preferably be greater than about ten times its diamenter D.

Although only a single embodiment of this invention is shown and described in detail, other embodiments are possible and changes may be made in the form and arrangement of the details thereof without departing from the spirit of the invention as defined in the claims herebelow appended.

What is claimed is:

l. A gun sight having in combination an elongated plastic block,

a pair of substantially flat optical surfaces formed on two opposite ends of said block,

said block being formed of transparent material,

a cylindrical wall formed in said block so as to define an opening connecting said optical surfaces,

a cylindrical light diffusing and transparent element formed of fluorescent material, said element being coextensive with and fitted to said wall so as to provide a luminescent directional sighting means extending between said optical surfaces,

a pair of substantially flat optical surfaces formed on the terminal ends of said element substantially coplanar with the first pair of optical surfaces, and

means for mounting said block so that said element is aligned with the barrel of a gun on which it is mounted.

2. A gun sight as set forth in claim 1 further characterized by said element being a solid rod-like sighting member.

References Cited in the file of this patent UNITED STATES PATENTS 7,837,290 Redfield Dec. 22, 1931 2,526,126 Gaghier Oct. 17, 1950 2,615,252 Wing Oct. 28, 1952 2,706,335 Munsey Apr. 19, 1955 2,911,724 Conant Nov. 10, 1959

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2526126 *21 Feb 194917 Oct 1950Walter GagnierTelescope mount for rifles
US2615252 *11 Oct 194828 Oct 1952Wing Dee AGun sight
US2706335 *1 Sep 194919 Apr 1955Munsey Herbert HGun sight
US2911724 *24 Apr 195710 Nov 1959Poly Choke Company IncGun sight
US7837290 *18 Jul 200823 Nov 2010Xerox CorporationContinuous web printing system alignment method
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3218718 *25 Apr 196323 Nov 1965Hays Harry MSighting system for firearms
US3362074 *22 Jan 19649 Jan 1968LuebkemanBinocular front sight for firearms
US3641676 *7 Aug 196915 Feb 1972Nite Site IncRadioluminescent gunsight and method
US3747222 *22 Jan 197124 Jul 1973Benoit ABow sight
US3974585 *24 Oct 197417 Aug 1976Dunham Charles WGun sight night lighting attachment
US4030203 *4 Oct 197421 Jun 1977Olin CorporationReflex sight reticle illuminator
US4070763 *3 Dec 197631 Jan 1978The United States Of America As Represented By The Secretary Of The ArmyAiming/sighting device
US4806007 *6 Nov 198721 Feb 1989Armson, Inc.Optical gun sight
US4945667 *20 Jun 19887 Aug 1990Rogalski Curtis JSimulated sighting device
US5327654 *1 Jun 199312 Jul 1994Parker Joseph SGun sight
US5638604 *26 Jul 199517 Jun 1997Tru-Glo, Inc.Sighting devices for projectile type weapons
US5791060 *13 Nov 199511 Aug 1998Godsey; Samuel W.Sighting device for an archery bow
US5836100 *10 Jul 199617 Nov 1998Williams Gun Sight Co.Fiber optic sight
US5862618 *21 Apr 199726 Jan 1999Brown; Gary R.Gun sight for sighting moving targets
US5894672 *14 Aug 199720 Apr 1999Trumark Manufacturing CompanyEnhanced sight marker apparatus
US5956854 *26 Dec 199628 Sep 1999Tru-Glo, Inc.Day/night weapon sight
US6014830 *25 Mar 199818 Jan 2000Brown; Gary R.Remountable gun sight for low illumination
US6016608 *3 Nov 199825 Jan 2000Lorocco; Paul M.Sighting devices for projectile type weapons
US6035539 *12 Feb 199714 Mar 2000Connecticut Valley Arms, Inc.Fiberoptic gun sight
US6058615 *11 Mar 19989 May 2000Ref Alabama Inc.Gun sights
US7921591 *30 Apr 200912 Apr 2011Terry AdcockFlip-up aiming sight
US881341324 Oct 201226 Aug 2014North Pass, Ltd.Weapon sight light emission member locking system
US892523726 Sep 20116 Jan 2015North Pass, Ltd.Weapon sight light emission system
US9194657 *4 Mar 201524 Nov 2015Ricky C. FergusonLens for sighting device
US93351188 Jan 201510 May 2016Jason Stewart JacksonFiber optic weapon sight
US95879109 May 20167 Mar 2017Jason Stewart JacksonFiber optic weapon sight
US9644921 *24 Apr 20159 May 2017Truglo, Inc.Sight assembly with illuminated sight point
US20060123687 *14 Dec 200415 Jun 2006North Pass, Ltd.Aiming sight
USRE33485 *17 Feb 198811 Dec 1990Scopus Optical IndustryLighted gun sights
DE4214997A1 *6 May 199211 Nov 1993Ferdinand RaetzIlluminated bead for front sight of gun - is cylindrical, with its axis parallel to axis of gun barrel
U.S. Classification42/145
International ClassificationF41G1/00, F41G1/32
Cooperative ClassificationF41G1/32
European ClassificationF41G1/32