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公开(公告)号：US11365950B1
公开(公告)日：2022-06-21
申请号：US16732429
申请日：2020-01-02
Applicant: James J. Kempf , Rex E. Isenhower , Randy Kitts
Inventor： James J. Kempf , Rex E. Isenhower , Randy Kitts
Abstract: An accessory mount having a plurality of uses and mounting provisions wherein an accessory may be operably removed and engaged with the accessory mount. The accessory mount may be worn on a belt or engaged with any end use article, such as a bow, a tree, a tree stand. The accessory mount shall have radial indexing provisions, allowing a receiver to rotate about the axis of the provisions.
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公开(公告)号：US09829268B1
公开(公告)日：2017-11-28
申请号：US15603606
申请日：2017-05-24
Applicant: James J. Kempf , Rex E. Isenhower
Inventor： James J. Kempf , Rex E. Isenhower
CPC classification number: F41B5/123 , F41B5/105 , Y10S124/90
Abstract: A projectile launching device includes self-timing without cam lean. The projectile launching device may include a rail, a riser, two energy storing components, (such as two limbs), two cams, a launch string, and at least one cable. The ends of the launch string are attached to the two cams. Opposing ends of first and second cables may be coupled to the rail or riser. A mid-portion of the first and second cables are slideably engaged with the first and second cams, respectively. Alternatively, a single cable may replace the first and second cables. The two cams are preferably built as mirror images of each other at a centerline of the rail. The two cams include a launch string track, having identical, but mirrored, upper and lower cable tracks.
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公开(公告)号：US10359254B1
公开(公告)日：2019-07-23
申请号：US16120565
申请日：2018-09-04
Applicant: James J. Kempf , Rex E. Isenhower , Dorge O. Huang
Inventor： James J. Kempf , Rex E. Isenhower , Dorge O. Huang
Abstract: A crossbow with built in electric cocking preferably includes a motor, a drive device, a pair of carriage drive shafts and a pair of string carriages. The motor preferably includes a gearbox with an output shaft. The drive device includes a support frame and a drive shaft rotatably retained in the support frame. A drive gear is retained on one end of the drive shaft. An opposing end of the drive shaft is connected the output shaft. First and second carriage drive shafts each include a threaded drive shaft and a carriage drive gear retained on one end of the threaded drive shaft. The drive gear drives the carriage drive gear. First and second string carriages each include a string catch and a threaded tap. The threaded tap is sized to threadably receive the threaded drive shaft.
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公开(公告)号：US09879938B1
公开(公告)日：2018-01-30
申请号：US15589381
申请日：2017-05-08
Applicant: Rex E. Isenhower , James J. Kempf
Inventor： Rex E. Isenhower , James J. Kempf
IPC: F41B5/12
CPC classification number: F41B5/123
Abstract: A reverse style crossbow having four pulleys preferably includes a barrel, a riser, a first limb, a second limb, a first cam and a second cam. The riser is attached to the barrel. The first and second limbs extend from opposing ends of the riser. The first and second cams are rotatably retained on distal ends of the first and second limbs. First and second barrel pulleys are rotatably retained on opposing sides of the barrel. A first limb pulley is rotatably retained by the first limb and a second limb pulley is rotatably retained by the second limb. One end of a first cable is attached to the first cam and the other end is attached to the barrel. One end of a second cable is attached to the second cam and the other end is attached to the barrel. A single cable may also be used.
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公开(公告)号：US10514227B1
公开(公告)日：2019-12-24
申请号：US16185523
申请日：2018-11-09
Applicant: James J. Kempf , Rex E. Isenhower
Inventor： James J. Kempf , Rex E. Isenhower
Abstract: A multi-draw weight archery bow with cable timing includes a shooting bow and a timing-draw device. The shooting bow includes a riser, a barrel, a first limb, a second limb, a first cam, a second cam, a bowstring, a first cable and a second cable. A rotational timing-draw device includes a rotational timing housing and a rotational timing hub. The rotational timing housing is mounted in a limb. A cable is secured to the rotational timing hub and the rotational timing hub is secured to the rotational timing housing. A multi-position draw weight and rotation device includes a multi-position and rotational draw timing hub and the rotational timing housing. The end of a cable is secured to one of four positions on the multi-position and rotation draw timing hub. A multi-position draw weight device includes a multi-position adjustable draw weight plate and a timing housing.
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Patent Agency Ranking
公开(公告)号：US10458743B1
公开(公告)日：2019-10-29
申请号：US15995229
申请日：2018-06-01
Applicant: James J. Kempf , Rex E. Isenhower , Dorge O. Huang
Inventor： James J. Kempf , Rex E. Isenhower , Dorge O. Huang
Abstract: A crossbow with built in cocking device includes a manual crank and a built-in, removable motor gearbox assembly and power source. Rotational forces applied to a drive shaft rotate in a first direction, causing first and second string carriages to engage a bow string, moving the bow string towards a string catch. Once the string catch is latched to the bow string, a drive shaft is rotated in a second direction to move first and second string carriages to the a rest position.
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公开(公告)号：US10066894B1
公开(公告)日：2018-09-04
申请号：US15626207
申请日：2017-06-19
Applicant: James J. Kempf , Rex E. Isenhower
Inventor： James J. Kempf , Rex E. Isenhower
Abstract: An improved crossbow lock mechanism assembly includes a trigger housing, a seer lever, a seer lock lever, a latch, trigger, a spring, a detent ball, and a safety slide bar having one ball detent. Selectively positioning the safety slide bar in a safe position, the spring forces the detent ball into a safety detent notch, which holds the safety bar in safety position, thus preventing movement of the seer lever. Selectively positioning the safety slide bar in a fire position results in the spring creating friction between the ball and safety bar, thus holding safety bar in place and allowing movement of the seer lever. A second embodiment uses a pivoting safety lock lever. The engagement of the seer lever with the string latch is indirect, because of a roller pin spaced therebetween. A third embodiment includes a safety slide bar, which makes indirect contact with the seer lever.
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公开(公告)号：US10012468B1
公开(公告)日：2018-07-03
申请号：US15683808
申请日：2017-08-23
Applicant: James J. Kempf , Rex E. Isenhower
Inventor： James J. Kempf , Rex E. Isenhower
CPC classification number: F41B5/1469 , F21V33/008 , F41B5/12 , F42B6/04
Abstract: A self-centering anti-dry fire device for a crossbow n improved crossbow lock mechanism assembly includes a trigger housing, a string latch, a seer lever, a combination arrow self-centering anti-dry fire and seer lock lever, a trigger and a safety slide bar. An arrow cavity is formed in a top of the combination arrow self-centering anti-dry fire and seer lock lever. A cross section of the arrow cavity may have a “V” shape, a curved shape, a notch shape or any other suitable shape. The arrow cavity ensures that the arrow shaft is centered relative to a centerline of a barrel of the crossbow.
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公开(公告)号：US09696107B1
公开(公告)日：2017-07-04
申请号：US14940822
申请日：2015-11-13
Applicant: James J. Kempf , Rex E. Isenhower
Inventor： James J. Kempf , Rex E. Isenhower
IPC: F41B5/12
Abstract: A multi-element one piece reverse draw style crossbow frame preferably includes a riser element, an AR style stock receiver tube element, a barrel element, a foot stirrup element, a first limb pocket element and a second limb pocket element, which are molded as a single piece of material. A first limb and a second limb are attached to the riser element. A first cam is pivotally retained on a distal end of the first limb and a second cam is pivotally retained on a distal end of a second limb. The barrel element preferably includes an opening for a trigger box, stock mounting points, an integrated finger guard, accessory mounting points and the like. A multi-element one piece dual stirrup crossbow frame preferably includes a barrel element, a riser element, a first foot stirrup element and a second foot stirrup element, which are molded as a single piece of material.
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公开(公告)号：US10690436B1
公开(公告)日：2020-06-23
申请号：US16360122
申请日：2019-03-21
Applicant: James J. Kempf , Rex E. Isenhower
Inventor： James J. Kempf , Rex E. Isenhower
Abstract: A crossbow having a built in manual cocking mechanism that may also be utilized with an optional built in, removable motor gearbox assembly and power source. The motor gearbox assembly may or may not have a clutch assembly, whereby rotational force reaches a predetermined amount, rotation of the drive shaft ceases. Switches may be provided to start, stop, and reverse the direction of rotation of the motor gearbox assembly, as well as switches and or circuits that may control operation of the motor gear set.
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