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US3766656A Expired / Lapsed US ⏱️ 0.0 years remaining

Motor driven bow sighting device

Assignee: Individual
•
Filing: 1971-11-22
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Granted: 1973-10-23
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Expires: 1991-11-22
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Abstract

Abstract A sighting device for an archer''s bow includes a single sight pointer which is adjustably movable vertically in registry with the sight window on the bow. The sight pointer is mounted on and extends laterally from a nut which is threadably received on a screw rotatably supported on a bracket which is attachable to the bow. The nut is confined by channel flanges which afford rectilinear movement of the nut but restrain rotation of the nut. A small electric reversible motor is connected to the screw by a gear drive train for raising and lowering the sight pointer. The motor and a battery for energizing the motor are supported on the bracket. The electrical switch for energizing the motor for raising or lowering the sight indicator is optionally located on the bracket or in a convenient access location on the bow hand grip. An indicator projects laterally and oppositely of the pointer for registration with distance indicia on a scale also carried by the bracket. The bow sight also includes a rear sight which is connected to the bracket and positioned rearwardly of the bow hand grip and alignable with the forward sight pointer and the target to facilitate aiming of the arrow. The sighting device also includes an electrical circuit with a signal light to indicate a pre-selected full arrow draw and in which the signal light is illuminated when a conductor on the arrow closes two electrical contacts on the arrow rest.

Inventors

  • 👤 K Westphal

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 17:23
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/02; F16B5/0216; F16B5/0225; F41; F41G; F41G1/00; F41G1/46; F41G1/467

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 267 words
A sighting device for a bow comprising a mounting bracket including wall portions defining a housing, a sight pointer movable relative to said bracket, an electric motor having an output shaft, said motor being supported on said mounting bracket within said housing walls, means for connecting said output shaft to said pointer for moving said sight pointer reciprocably to afford a range of sight pointer positions on said bracket, said means comprising a screw, means for supporting said screw on said bracket, a threaded member in the form of a nut having opposed flat surfaces threadably recieved on said screw and connected to said sight pointer, channel means having opposed flat surfaces engaging said nut surfaces and including at least one channel wall comprising a flange means projecting inwardly from a housing wall for restraining rotation of said threaded member and affording rectilinear movement of said threaded member on said screw, and means for energizing said motor, said housing wall portions including front, rear and side walls enclosing said motor and said screw, a longitudinal slot in one of said side walls, said rear wall being adapted to face a bow when mounted on a bow including a scale on said rear housing wall having indicia and a range indicator connected to said threaded member, said range indicator including a portion generally parallel with said rear wall and registerable with said indicia, a portion generally parallel with said side wall having said slot, and an indicator portion extending through said slot and said sight pointer extending in a direction counter to the direction of said range indicator.
Claim 2
Dependent Claim 267 words
A sighting device for a bow comprising a mounting bracket including wall portions defining a housing, a sight pointer movable relative to said bracket, an electric motor having an output shaft, said motor being supported on said mounting bracket within said housing walls, means for connecting said output shaft to said pointer for moving said sight pointer reciprocably to afford a range of sight pointer positions on said bracket, said means comprising a screw, means for supporting said screw on said bracket, a threaded member in the form of a nut having opposed flat surfaces threadably recieved on said screw and connected to said sight pointer, channel means having opposed flat surfaces engaging said nut surfaces and including at least one channel wall comprising a flange means projecting inwardly from a housing wall for restraining rotation of said threaded member and affording rectilinear movement of said threaded member on said screw, and means for energizing said motor, said housing wall portions including front, rear and side walls enclosing said motor and said screw, a longitudinal slot in one of said side walls, said rear wall being adapted to face a bow when mounted on a bow including a scale on said rear housing wall having indicia and a range indicator connected to said threaded member, said range indicator including a portion generally parallel with said rear wall and registerable with said indicia, a portion generally parallel with said side wall having said slot, and an indicator portion extending through said slot and said sight pointer extending in a direction counter to the direction of said range indicator.
Claim 3
Dependent Claim 64 words
A sighting device in accordance with claim 1 wherein said output shaft is offset from said screw and wherein said means for connecting said output shaft to said screw includes a gear on said output shaft, a gear on said screw and an idler geAr supported on said bracket and meshing with said gear on said output shaft and said gear on said screw.
Claim 4
Dependent Claim 58 words
A sighting device for a bow in accordance with claim 1 wherein said threaded member has opposed flat surfaces and wherein said means for restraining rotation of said threaded member and affording rectilinear movement of said threaded member further comprises opposed spaced surfaces on said bracket defining a channel to receive said flat surfaces of said threaded member.
Claim 5
Dependent Claim 47 words
A sighting device for a bow in accordance with claim 1 including a rear sight pointer, means for supporting said rear sight pointer on said bracket in spaced relation from said sight pointer and means for adjusting said rear sight pointer laterally to compensate for wind variations.
Claim 6
Dependent Claim 54 words
A sighting device in accordance with claim 1 wherein said sighting device is adapted to be attached to a bow and said sighting device including a battery, and an electrical switch selectively operable by manual manipulation of the user, said switch being electrically connected to said battery and said motor for energizing said motor.

References Cited (Backward Citations)

US2718224A Cited
US2959860A Cited
US3273934A Cited
GB1037715A Cited
US3245393A Cited
US3450122A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-10-22 1977-04-23 1977-10-23 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-10-22 1981-04-23 1981-10-23 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-10-22 1985-04-23 1985-10-23 $7700.00 Window Closed / Lapsed

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