Lobed nock for crossbow bolts
First Claim
Patent Images
1. A lobed bolt configured for use in a crossbow, the bolt comprising:
- a shaft having a leading end and a trailing end;
a point positioned at the leading end;
a plurality of circumferentially spaced apart vanes positioned on the shaft between the leading end and the trailing end;
a nock positioned at the trailing end, the nock comprising;
a body portion attached to the shaft, the body portion having a central axis;
a lobe on the outer surface of the body portion, the lobe extending radially away from the central axis, the lobe having a lobe width configured to be substantially equal to a groove width extending between two rails of a crossbow.
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Accused Products
Abstract
A lobed projectile includes a shaft having a leading end and a trailing end, a point positioned at the leading end, a number of circumferentially spaced apart vanes positioned on the shaft between the leading end and the trailing end, and a nock positioned at the trailing end. The nock includes a body portion attached to the shaft, wherein the body portion has a central axis, and the nock includes a lobe on the outer surface of the body portion which extends radially away from the central axis. The nock may be used to avoid dry fires of a crossbow by controlling an anti-dry fire mechanism and by securing a bowstring to the nock of the projectile.
51 Citations
29 Claims
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1. A lobed bolt configured for use in a crossbow, the bolt comprising:
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a shaft having a leading end and a trailing end; a point positioned at the leading end; a plurality of circumferentially spaced apart vanes positioned on the shaft between the leading end and the trailing end; a nock positioned at the trailing end, the nock comprising; a body portion attached to the shaft, the body portion having a central axis; a lobe on the outer surface of the body portion, the lobe extending radially away from the central axis, the lobe having a lobe width configured to be substantially equal to a groove width extending between two rails of a crossbow. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A nock for a crossbow bolt, the nock comprising:
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a front end portion configured to be inserted into a shaft of a crossbow bolt, the front end portion having a longitudinal axis; a rear end portion configured to extend rearward from the shaft upon insertion of the front end portion into the shaft; a lobe attached to the rear end portion and extending away from the rear end portion in a radial direction relative to the longitudinal axis, the lobe having a lobe width, the lobe width being configured to be substantially equal to a flight groove width of a crossbow. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A nock-based bolt detection system for a crossbow, the system comprising:
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a crossbow bolt, the bolt being connected to a nock, the nock having a lobe extending radially outward from the nock; a crossbow having a front end and a rear end, two laterally-extending limbs, and a bowstring connected to the limbs; a string retaining member configured to retain the bowstring when the bowstring is under tension, the string retaining member being configured to release the bowstring when shooting the crossbow; a nock contact member having a first position relative to the crossbow wherein the nock contact member prevents release of the bowstring from the string retaining member and having a second position relative to the crossbow wherein the nock contact member does not prevent release of the bowstring from the string retaining member, the nock contact member being configured to move between the first position and the second position by contacting the lobe of the nock. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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Specification