ARCHERY BOW CAM ROTATION ASSIST DEVICE
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
N/A
app pub date -
Oct 3, 2016
filing date -
Oct 22, 2015
priority date (Note) -
Abandoned
status (Latency Note)
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Importance

US Family Size
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Non-US Coverage
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Abstract
An archery bow is provided including a cam body rotatably joined with a limb and a cam rotation assist device engaging a portion of the cam body so as to urge rotation of the cam body independent of the limb. With the action thereon by the cam rotation assist device, the cam body rotates faster upon initial rotation during a shot cycle when the bow is shot than the cam body otherwise would rotate if the cam rotation assist device was absent. This can reduce the effect of inertia on the cam, and can improve dynamic efficiency of the bow. The rotation assist device can be in the form of a mini limb, a coil spring, programmable magnets and other components that can urge cam rotation of the cam body. The cam body can include a draw stop that engages the mini limb. Related methods are provided.
First Claim
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Family
- No Family data available.
- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
GRACE ENGINEERING CORP | 34775 POTTER STREET MEMPHIS MI 48041 |
International Classification(s)

- 2016 Application Filing Year
- F41B Class
- 238 Applications Filed
- 208 Patents Issued To-Date
- 87.40 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Grace, Nathaniel E | Fort Gratiot, US | 40 | 507 |
# of filed Patents : 40 Total Citations : 507 |
Cited Art Landscape
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Patent Citation Ranking
- 4 Citation Count
- F41B Class
- 5.63 % this patent is cited more than
- 8 Age
Forward Cite Landscape
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Oct 27, 2028 |
Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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