US4640514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Optoelectronic target practice apparatus
Assignee: NOPTEL KY
•
Filing: 1985-02-20
•
Granted: 1987-02-03
•
Expires: 2005-02-20
Abstract
Abstract Designs of prior art art not usable in efficient dry-run target practice with hand firearms. The greatest drawbacks are, for instance, that it is not possible by the method to monitor the result of the dry-run training; that the method or means is not liable on ordinary guns without special measures or not at all or the method is so complicated that its implementation in practice causes that the means is too expensive to be in the personal possession and use of shooters. In order to eliminate said drawbacks, the invention is mainly characterized in that by a transmitter/receiver means attachable to conventional arms is emitted an optical beam towards a surface serving as the target which is set off from its surroundings due to its optic radiation reflecting properties relative to those of its surroundings, the hitting or missing of the beam being observed with the receiver on the basis of the return beam.
Inventors
- 👤 Risto Myllyla
- 👤 Harri Kopola
- 👤 Juha Kostamovaara
- 👤 Raimo Ahola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:08
CPC Classifications
F; F41; F41G; F41G3/00; F41G3/26; F41G3/2616; F41G3/2622; F41G3/2683
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
191 words
An apparatus for dry-run target practice using firearms, such as pistols and rifles, which are to be used in competition, comprising: an integrated transmitter/receiver means for attachment to the barrel of a firearm, and a target having one portion defining a first area for aiming the sights of the firearm and another portion separated therefrom and defining a second area which exhibits significantly different light reflectivity than that of a third area surrounding said second area, said first and second areas being variable independently of each other as to their size and position; said transmitter/receiver means further comprising means for generating and transmitting a light beam pulse to said second or third area of said target exhibiting greater light reflectivity, upon actuation of the trigger of the firearm, means for receiving a reflected light beam pulse from said second or third area of greater reflectivity, and means for detecting and indicating that a reflected light beam has been received by said receiver means, whereby an operator of the firearm can ascertain whether or not he would have hit or missed the first area of the target at which he has aimed.
Claim 2
Independent Claim
191 words
An apparatus for dry-run target practice using firearms, such as pistols and rifles, which are to be used in competition, comprising: an integrated transmitter/receiver means for attachment to the barrel of a firearm, and a target having one portion defining a first area for aiming the sights of the firearm and another portion separated therefrom and defining a second area which exhibits significantly different light reflectivity than that of a third area surrounding said second area, said first and second areas being variable independently of each other as to their size and position; said transmitter/receiver means further comprising means for generating and transmitting a light beam pulse to said second or third area of said target exhibiting greater light reflectivity, upon actuation of the trigger of the firearm, means for receiving a reflected light beam pulse from said second or third area of greater reflectivity, and means for detecting and indicating that a reflected light beam has been received by said receiver means, whereby an operator of the firearm can ascertain whether or not he would have hit or missed the first area of the target at which he has aimed.
Claim 3
Dependent Claim
69 words
An apparatus according to claim 1, wherein the optic beam from the transmitter is as narrow as possible as to divergence and diameter, and said second area of said target has a surface of predetermined size which reflects light better than its surrounding area, and the difficulty of scoring a hit, or the size of the scoring solid angle is changed by changing the size of the reflector/scattering surface.
Claim 4
Dependent Claim
60 words
An apparatus according to claim 1, wherein the optic beam from the transmitter is as narrow as possible as to divergence and diameter and said second area of said target has a surface of predetermined size which reflects light less than said third area, whereby said receiver detects light beam pulses which have hit the area around said second area.
Claim 5
Dependent Claim
39 words
An apparatus according to claim 1, wherein an acoustic sensor in the transmitter means is actuated by transmitted sound caused by firing the cocked gun, and said sensor actuates said means for generating and transmitting a light beam pulse.
Claim 6
Dependent Claim
27 words
An apparatus according to claim 1, wherein said means for indicating that a reflected light beam has been received by said receiving means is acoustic or optical.
Claim 7
Dependent Claim
54 words
An apparatus according to claim 1, wherein the transmitter means emits a single brief delayed light pulse after the moment of triggering the gun, with such a delay that the light pulse starting and recognition moment approximately corresponds to the moment at which a bullet would ordinarily emerge from the barrel of said gun.
References Cited (Backward Citations)
US2659606A
Cited
US3471945A
Cited
US3655192A
Cited
US4083560A
Cited
US4171811A
Cited
US4234911A
Cited
US4367516A
Cited
US4352665A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-02-02 | 1990-08-04 | 1991-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-02 | 1994-08-04 | 1995-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-02 | 1998-08-04 | 1999-02-03 | $7700.00 | Window Closed / Lapsed |