US3923035A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compound bow
Assignee: Individual
•
Filing: 1974-08-20
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Granted: 1975-12-02
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Expires: 1994-08-20
Abstract
Abstract A compound bow including a frame having a pair of limbs with pulleys rotatably affixed to the free ends thereof for receiving the bowstring and a cable system. The cable system includes a set of cams mounted on the frame of the bow to effect a substantially constant bowstring pressure as the bow is drawn to a predetermined point, and a significant drop in bowstring pressure at said predetermined point for accurate aiming of an arrow placed in cooperation with the bowstring. The cable system has a first forward tension cable, one end of which is carried by one of the cams while the other end of the cable extends uninterrupted to a pulley on the free end of a bow limb. A second forward tension cable is positioned at the opposite end of the bow from the first tension cable and connects to a pulley on the free end of the opposite bow limb in the same manner as the first forward tension cable.
Inventors
- 👤 George H Trotter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:24
CPC Classifications
F; F41; F41B; F41B5/00; F41B5/10; F41B5/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
392 words
A compound bow comprising: a. a frame; b. a pair of limbs carried by said frame and adapted to bend when said bow is drawn; c. a single pulley carried by each of said limbs and positioned at the free end of each of said limbs at the extremities of said limbs; d. a pair of cams carried by said frame; e. a first forward tension cable, one end of which is carried by one of said cams while the other end of which extends uninterrupted to said pulley on one of said limbs, and a second forward tension cable, one end of which is carried by the other of said cams while the other end of which extends uninterrupted to the other of said pulleys; f. a bowstring, each end of which is respectively attached to the ends of said forward Tension cables, whereby when said bowstring is drawn said cams are caused to rotate and said pair of forward tension cables causes rotation of said pair of pulleys; g. a pair of rear tension cables in cooperation with said pair of limbs and said pair of cams, whereby when said bowstring is drawn, said pair of cams rotate, and said forward tension cable unwinds from said pair of cams, and said rear tension cables wind on said pair of cams, respectively; h. synchronizing cable means in cooperation with said pair of cams to synchronize the rotation of said pair of cams when said bowstring is drawn; i. synchronizing pulleys carried by said pair of cams and positioned on the frame with said synchronizing cable means reeved there about; j. adjusting means in cooperation with said rear tension cable and said bowstring to permit adjusting the length of draw of said bow; k. a frame aperture in said frame and a pivoting hand grip in said frame aperture to permit steady aiming of said bow; l. a fletching slide means affixed to said frame between said cams and spaced from the frame toward a user to protect the feathers of an arrow being projected from engaging the synchronizing pulley means; m. an arm guard positioned below said fletching slide on said frame; and n. cam stop means mounted on cam seats in the rotational path of said cam to prevent further rotation of said cams at full draw of said bow.
Claim 2
Dependent Claim
392 words
A compound bow comprising: a. a frame; b. a pair of limbs carried by said frame and adapted to bend when said bow is drawn; c. a single pulley carried by each of said limbs and positioned at the free end of each of said limbs at the extremities of said limbs; d. a pair of cams carried by said frame; e. a first forward tension cable, one end of which is carried by one of said cams while the other end of which extends uninterrupted to said pulley on one of said limbs, and a second forward tension cable, one end of which is carried by the other of said cams while the other end of which extends uninterrupted to the other of said pulleys; f. a bowstring, each end of which is respectively attached to the ends of said forward Tension cables, whereby when said bowstring is drawn said cams are caused to rotate and said pair of forward tension cables causes rotation of said pair of pulleys; g. a pair of rear tension cables in cooperation with said pair of limbs and said pair of cams, whereby when said bowstring is drawn, said pair of cams rotate, and said forward tension cable unwinds from said pair of cams, and said rear tension cables wind on said pair of cams, respectively; h. synchronizing cable means in cooperation with said pair of cams to synchronize the rotation of said pair of cams when said bowstring is drawn; i. synchronizing pulleys carried by said pair of cams and positioned on the frame with said synchronizing cable means reeved there about; j. adjusting means in cooperation with said rear tension cable and said bowstring to permit adjusting the length of draw of said bow; k. a frame aperture in said frame and a pivoting hand grip in said frame aperture to permit steady aiming of said bow; l. a fletching slide means affixed to said frame between said cams and spaced from the frame toward a user to protect the feathers of an arrow being projected from engaging the synchronizing pulley means; m. an arm guard positioned below said fletching slide on said frame; and n. cam stop means mounted on cam seats in the rotational path of said cam to prevent further rotation of said cams at full draw of said bow.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |