Patents by Inventor Rex F. Darlington
Rex F. Darlington has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10145642Abstract: An archery bow comprises first and second limb levers pivotably coupled to first and second limbs about first and second lever pivot axes. The levers include intermediate sections between forward and rearward sections on forward and rearward sides of the pivot axes. A bowstring is coupled to the rearward sections, a first cable is coupled to the forward section and to the intermediate section of the second limb lever, and a second cable is coupled to the forward section and to the intermediate section of the first limb lever. One or both of the cables is coupled to its respective limb lever in a central plane perpendicular to and centered across the respective pivot axis, and/or is coupled to the intermediate section of the other limb lever in a location such that the first cable is intersectable with the other lever pivot axis.Type: GrantFiled: July 25, 2017Date of Patent: December 4, 2018Inventor: Rex F. Darlington
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Patent number: 10048038Abstract: An archery bow cable slider includes a forward wall extending away from a base wall, a bifurcated wall extending away from the base wall including a rearward wall extending away from the base wall and an intermediate wall extending away from the rearward wall, and a throughbore extending through free ends of the forward, rearward, and intermediate walls. The base, forward, rearward, and intermediate walls establish a first slot having a laterally extending portion and an axially extending portion that extends substantially perpendicular to the laterally extending portion, and the rearward and intermediate walls establish a second slot that at least partially axially overlaps the first slot.Type: GrantFiled: November 20, 2017Date of Patent: August 14, 2018Inventor: Rex F. Darlington
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Patent number: 9909832Abstract: A trigger mechanism for a crossbow that includes a housing having a channel for receiving an arrow, a trigger arm carried by the housing, a bowstring latch for retaining a bowstring in a cocked position that is pivotally carried by the housing and engagable with the trigger arm, and a dry-fire safety (DFS) latch pivotally carried by the housing and engagable with the bowstring latch, wherein the DFS latch substantially retains the bowstring latch in the cocked position when the trigger arm is actuated without the arrow seated in the channel.Type: GrantFiled: December 27, 2013Date of Patent: March 6, 2018Inventor: Rex F. Darlington
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Patent number: 9599426Abstract: A crossbow includes a barrel having a bowstring rail with a slot including spaced first and second arrow rest areas aligned along said bowstring rail and an arrow clearance area therebetween, and an arrow retention spring carried by the barrel. The first arrow rest area is positioned adjacent to an end of the bowstring rail, and the second arrow rest area is positioned beneath the arrow retention spring directly beneath said arrow retention spring in a location where said arrow retention spring is adapted to contact said arrow. Provision of the spaced rest areas, particularly the second rest area beneath the arrow retention spring, stabilizes an arrow on the barrel prior to launch.Type: GrantFiled: February 2, 2015Date of Patent: March 21, 2017Inventor: Rex F. Darlington
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Patent number: 9121658Abstract: A compound archery bow that includes: a bow handle, a limb projecting from the bow handle, and a pulley assembly coupled to the limb for rotation around an axis. The pulley assembly may be include a bowstring cam including a bowstring track in a bowstring plane, a let-out cam carried by the bowstring cam and including a let-out track in a let-out plane spaced apart from the bowstring plane, an arcuately-shaped first take-up cam arcuately adjustably coupled to the bowstring cam and including a first take-up track in a take-up plane, and a first draw stop at one end of the first take-up cam.Type: GrantFiled: April 1, 2014Date of Patent: September 1, 2015Inventor: Rex F. Darlington
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Publication number: 20150159975Abstract: A crossbow includes a barrel having a bowstring rail with a slot including spaced first and second arrow rest areas aligned along said bowstring rail and an arrow clearance area therebetween, and an arrow retention spring carried by the barrel. The first arrow rest area is positioned adjacent to an end of the bowstring rail, and the second arrow rest area is positioned beneath the arrow retention spring directly beneath said arrow retention spring in a location where said arrow retention spring is adapted to contact said arrow. Provision of the spaced rest areas, particularly the second rest area beneath the arrow retention spring, stabilizes an arrow on the barrel prior to launch.Type: ApplicationFiled: February 2, 2015Publication date: June 11, 2015Inventor: Rex F. Darlington
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Patent number: 8978634Abstract: A crossbow includes a barrel with a bowstring rail and an arrow support area on the rail. An arrow retention spring is carried by the barrel for releasably holding the arrow on the arrow support area prior to launch. The arrow support area includes a first arrow rest area adjacent to an end of the bowstring rail and a second arrow rest area beneath the arrow retention spring. An arrow on the barrel is out of contact with and spaced from the bowstring rail except in the first and second rest areas. Provision of the spaced rest areas, particularly the second rest area beneath the arrow retention spring, stabilizes an arrow on the barrel prior to launch.Type: GrantFiled: March 15, 2013Date of Patent: March 17, 2015Inventor: Rex F. Darlington
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Patent number: 8826894Abstract: A compound archery bow includes a bow handle having projection limbs, and first and second pulleys mounted on the limbs for rotation around on axles. A bow cable arrangement includes a bowstring cable extending from a bowstring anchor through a bowstring let-out groove at the first pulley and then toward the second pulley, a first cable extending from a first anchor through a portion of a groove on the first pulley and then toward the second pulley, and a second cable extending from a second anchor through a portion of a groove on the first pulley and then toward the second pulley. The first cable includes a yoke having a first end connected to the first anchor, a split second end connected to the first axle on opposite sides of the first pulley, and a third end extending toward the second pulley. The yoke preferably includes an idler pulley mounted on a bracket.Type: GrantFiled: August 18, 2011Date of Patent: September 9, 2014Assignee: Rex DarlingtonInventors: Rex F. Darlington, David P. McNeil, II
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Publication number: 20140182574Abstract: A trigger mechanism for a crossbow that includes a housing having a channel for receiving an arrow, a trigger arm carried by the housing, a bowstring latch for retaining a bowstring in a cocked position that is pivotally carried by the housing and engagable with the trigger arm, and a dry-fire safety (DFS) latch pivotally carried by the housing and engagable with the bowstring latch, wherein the DFS latch substantially retains the bowstring latch in the cocked position when the trigger arm is actuated without the arrow seated in the channel.Type: ApplicationFiled: December 27, 2013Publication date: July 3, 2014Inventor: Rex F. Darlington
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Patent number: 8714143Abstract: A compound archery bow that includes a handle, at least one limb mounted on the handle, a pulley mounted for rotation on the limb, and a bowstring lying in a bowstring groove around at least a portion of the periphery of the pulley. In one embodiment, the bowstring groove has a depth at least 10% greater than the diameter of the portion of the bowstring that lies in the groove. In another embodiment, the bowstring groove on the pulley is of non-uniform depth, having a greatest depth about midway through the portion of the power stroke that builds to peak force and then decreasing in both directions from that point.Type: GrantFiled: October 26, 2011Date of Patent: May 6, 2014Inventor: Rex F. Darlington
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Patent number: 8662062Abstract: A compound archery bow includes a bow handle having projecting limbs, and first and second pulleys mounted on the limbs for rotation around respective axes. A bow cable arrangement includes a bowstring cable extending from a bowstring anchor through a bowstring let-out groove on the first pulley and then toward the second pulley. A first power cable extends from a first power cable anchor through a power cable let-out arrangement on the first pulley toward the second pulley, and a second power cable extends from the second pulley through a power cable take-up arrangement on the first pulley to a second power cable anchor on the first pulley. Draw of the bowstring cable away from the handle lets out bowstring cable from the bowstring let-out groove and rotates the first pulley around the first axis, lets out the first power cable from the power cable let-out arrangement on the first pulley and takes up the second power cable into the second power cable take-up arrangement on the first pulley.Type: GrantFiled: January 22, 2010Date of Patent: March 4, 2014Inventor: Rex F. Darlington
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Patent number: 8662061Abstract: A crossbow includes a handle or barrel having a bolt support surface, a forward end with at least one flexible limb, and a rearward end. A support on the barrel overlies at least a portion of the bolt support surface. A bolt retaining spring on the support extends toward the bolt support surface for holding a bolt on the support surface. The retaining spring extends from the support at a downward and rearward angle toward the bolt support surface and then at an upward and rearward angle to a free end between the bolt support surface and the support. The spring preferably is of one-piece construction having a first portion underlying and secured to the support, a second portion extending downwardly and rearwardly from a forward end of the first portion, and a third portion extending upwardly and rearwardly from the second portion and the bolt support surface.Type: GrantFiled: January 27, 2012Date of Patent: March 4, 2014Inventors: Rex F. Darlington, David McNeil, II
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Patent number: 8627811Abstract: A crossbow includes a riser having projecting limbs with first and second pulleys mounted on the limbs for rotation around respective axes. A barrel extends from the riser, and a bowstring cable extends between the pulleys outside of the barrel for engaging and propelling a projectile. A pair of pulley rotation power cables extend between the pulleys through slots in the barrel, and a spacer is disposed adjacent to the riser and disposed in the barrel for engagement by the pulley rotation power cables at the end of the power stroke to dampen vibration from the riser and cables to absorb vibration that otherwise might be transmitted to the barrel.Type: GrantFiled: May 27, 2011Date of Patent: January 14, 2014Inventor: Rex F. Darlington
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Publication number: 20130291847Abstract: A crossbow includes a barrel with a bowstring rail and an arrow support area on the rail. An arrow retention spring is carried by the barrel for releasably holding the arrow on the arrow support area prior to launch. The arrow support area includes a first arrow rest area adjacent to an end of the bowstring rail and a second arrow rest area beneath the arrow retention spring. An arrow on the barrel is out of contact with and spaced from the bowstring rail except in the first and second rest areas. Provision of the spaced rest areas, particularly the second rest area beneath the arrow retention spring, stabilizes an arrow on the barrel prior to launch.Type: ApplicationFiled: March 15, 2013Publication date: November 7, 2013Inventor: Rex F. Darlington
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Patent number: 8534269Abstract: A compound archery bow includes a bow handle having projecting limbs, and first and second pulleys mounted on the limbs for rotation around respective axes. A bowstring cable extends from a bowstring anchor through a bowstring let-out groove on the first pulley and then toward the second pulley. A first power cable extends from a first power cable anchor toward the second pulley, and a second power cable extends from the second pulley through a power cable take-up arrangement on the first pulley to a second power cable anchor on the first pulley. A set of at least first and second bowstring cable draw length adjustment modules is provided for alternate mounting on the first pulley to adjust draw length of the bowstring cable away from the handle.Type: GrantFiled: February 18, 2010Date of Patent: September 17, 2013Inventors: Dennis Anthony Wilson, Rex F. Darlington
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Patent number: 8387603Abstract: A compound archery bow includes a bow handle having projecting limbs, and first and second pulleys mounted on the respective limbs for rotation around respective axes. A bow cable system includes a bowstring cable extending between the pulleys, and first and second power cables extending from the respective first and second pulleys toward the opposing pulley. Third and fourth pulleys are mounted on the handle. The third and fourth pulleys are engaged by the power cables and are at least partially offset from the bowstring cable so that the third and fourth pulleys hold the first and second power cables away from the bowstring cable, and the bowstring cable and an arrow engaged by the bowstring cable are unobstructed by the first and second power cables.Type: GrantFiled: March 2, 2010Date of Patent: March 5, 2013Inventor: Rex F. Darlington
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Patent number: 8307816Abstract: A compound archery bow includes a bow handle having at least one limb and a pulley rotatably mounted on the limb. A cable system includes a bowstring cable extending from the pulley and spaced from the handle for movement away from and toward the handle to propel an arrow, and at least one power cable extending from the pulley to control rotation of the pulley as a function of draw of the bowstring cable. A cable slide rod extends from the handle adjacent to the cable system. A cable slide is engaged with the power cable and slidable on the cable slide rod to hold the power cable away from the bowstring cable as the bowstring cable is drawn and released. The cable slide rod is non-linear, and preferably includes an end portion spaced from the handle that is curved toward the bowstring cable.Type: GrantFiled: January 26, 2010Date of Patent: November 13, 2012Inventor: Rex F. Darlington
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Patent number: 8205607Abstract: A compound archery bow includes a handle having projecting limbs, and first and second pulleys mounted on the limbs for rotation around respective axes. First and second cable anchors are disposed on the base adjacent to respective ends of a cable groove. A bow cable arrangement includes a bowstring cable extending from a bowstring anchor on the first pulley around a bowstring let-out groove and then toward the second pulley. A first cable extends from the first anchor on the first pulley through a portion of the cable groove on the first pulley and then toward the second pulley. A second cable extends from the second anchor toward the second pulley.Type: GrantFiled: June 30, 2009Date of Patent: June 26, 2012Assignee: Darton, Inc.Inventor: Rex F. Darlington
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Publication number: 20100154762Abstract: A compound archery bow includes a bow handle having projecting limbs, and first and second pulleys mounted on the respective limbs for rotation around respective axes. A bow cable system includes a bowstring cable extending between the pulleys, and first and second power cables extending from the respective first and second pulleys toward the opposing pulley. Third and fourth pulleys are mounted on the handle. The third and fourth pulleys are engaged by the power cables and are at least partially offset from the bowstring cable so that the third and fourth pulleys hold the first and second power cables away from the bowstring cable, and the bowstring cable and an arrow engaged by the bowstring cable are unobstructed by the first and second power cables.Type: ApplicationFiled: March 2, 2010Publication date: June 24, 2010Inventor: Rex F. Darlington
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Patent number: D737920Type: GrantFiled: November 21, 2014Date of Patent: September 1, 2015Inventor: Rex F. Darlington