Geometrical instruments – Straight-line light ray type – Structurally installed
Reexamination Certificate
1999-04-05
2001-09-04
Gutierrez, Diego (Department: 2859)
Geometrical instruments
Straight-line light ray type
Structurally installed
C124S087000
Reexamination Certificate
active
06282800
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates generally to an apparatus for archery bow sighting and, in particular, to a bowstring mounted, ambient lighted rear peep sight assembly.
An archer, operating a bow, mounts the nock of the arrow at a nocking point on a bowstring of the bow prior to drawing the bowstring back. The arrow's shaft is generally positioned on an arrow rest formed at a midpoint on one side of the bow. The archer then draws the bowstring back using the fingers of one hand while holding the bow with is the opposite hand.
Traditionally, to establish proper arrow trajectory a right handed archer would grip the bowstring with his right hand, draw the string back fully until it touched his right cheekbone, and sight using his right eye down a vertical plane passing along the shaft of the arrow and the left side of the bow.
This method of sighting was prone to error because the sight picture was so large that even the most experienced archer found it difficult to rapidly position the bow and nocked arrow. To improve accuracy and precision of the sighting process, a variety of sighting devices have been developed to provide reference points on the bow and bowstring to make it possible to more easily and more accurately establish a sight picture to aid the archer in establishing proper arrow trajectory.
Such sighting devices include sighting pins for installation on the bow and peep sights for installation in or on the bowstring. Sighting pins are adjustably mounted on and extend horizontally from the bow at a preset position above the arrow rest and are wholly analogous to the open blade sights on most firearms. A peep sight is mounted in spaced relation above the nocking point on the bowstring. Thus, use of sighting pins and peep sights can improve the archer's ability to establish proper arrow alignment and trajectory.
In low light conditions, however, most sights are difficult or impossible to use. One solution, associated with firearms, has been to provide an illuminated sight. The U.S. Pat. No. 2,987,821, the U.S. Pat. No. 3,678,590 and the U.S. Pat. No. 3,914,873 disclose lighted sights for guns. Lighted front sights and sighting pins have been used with bows. For example, the following U.S. Pat. Nos. show lighted front sights for bows: 4,177,572; 4,215,484; 4,638,565; 4,689,887; 4,928,394; 4,953,302 and 4,977,677.
A bow peep sight is also difficult to use in low light conditions. Such peep sights are shown in the U.S. Pat. No. 3,703,770; the U.S. Pat. No. 3,703,771; the U.S. Pat. No. 3,859,733 and the U.S. Pat. No. 4,011,853. Improvements in rear peep sights are shown in my U.S. Pat. No. 5,148,603 and my U.S. Pat. No. 5,157,839.
An illuminated rear peep sight for a projectile device is shown in the U.S. Pat. No. 5,148,603 issued Sep. 22, 1992. An illuminated rear peep sight for a bow is shown in the U.S. Pat. No. 5,157,839 issued on Oct. 27, 1992. A changeable insert peep sight is shown in the U.S. Pat. No. 5,669,146 issued on Sep. 23, 1997.
SUMMARY OF THE INVENTION
The present invention concerns a rear peep sight for use with an archery bow including: a sighting body having front and rear surfaces joined by a side surface and at least one locator aperture formed in the rear surface and extending to a cavity open to the front surface; means for transmitting ambient light incident at the front surface to the rear surface through the locator aperture retained in the cavity; and at least one cover mounted on the rear surface. The cover and the means for transmitting being selectively moveable relative to one another to an “on” position in which the incident light is visible to the eye of an archer adjacent the rear surface, an “off” position in which the cover blocks the incident light from the eye and at least one intermediate position in which the cover partially blocks the incident light from the eye.
In one embodiment, the rear peep sight has a cover rotatably mounted on the rear surface. This cover has at least one opaque area, at least one partially transparent area, and a transparent area and is selectively moveable between an “on” position in which the transparent area covers the locator aperture, the at least one “intermediate on” position in which the partially transparent area covers the locator aperture, and an “off” position in which the opaque area covers the locator aperture.
In an alternate embodiment, the sighting body has a front surface and a rear surface joined by a side surface, and an arcuate locator aperture formed in the rear surface. A means is provided for transmitting ambient light incident at the front surface to the rear surface through the arcuate locator aperture. The means for transmitting ambient light is rotatably mounted in a cavity in the sighting body. A fixed cover mounted on the rear surface over one end of the arcuate locator aperture permits the means for transmitting ambient light to be selectively rotated between an “on” position away from the cover and an “off” position under the cover.
The rear peep sight also includes slots for mounting in a bowstring and a post for aligning a longitudinal axis of the sighting aperture with a longitudinal axis of an arrow when the sighting body is mounted in bowstring of a bow.
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patent: 4040642A (1991-10-01), None
DeJesus Lydia M.
Gutierrez Diego
MacMillan Sobanski & Todd LLC
Robertson Kenneth
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