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7578175 |
Method of designing an iron sole shape, and system for the same
The sole shape can be designed with ease. The invention provides a method for designing an iron sole shape that includes the steps of setting different parameter values (S 1 ) relating to a sole...
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7509843 |
Waggle weight
A pre-swing waggle weight rotation point location and a waggle weight specification measurement are disclosed that are provided about a golf club. A process that may be computer implemented...
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7415866 |
Device for determining the center of gravity of an object
The device for determining the center of gravity of an object measures the moments of the object (e.g., golf club head, or other irregularly shaped object) as it is positioned in three mutually...
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7415867 |
Golf shaft and club flex neutralization/matching and method for manufacturing same
In accordance with the present invention, this method encompasses a shaft with a neutral flex point mark and identification mark/sticker of quantitative characteristics that has been achieved by...
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7403277 |
Method and apparatus for measuring face angle
A method ( 250 ) and apparatus ( 20 ) for measuring the face angle of a golf club ( 300 ), golf club head ( 302 ) or face component ( 304 ) of a golf club head is disclosed herein. The method ( 250...
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7395696 |
Launch monitor
A launch monitor that includes substantially all of its functional components on or within a housing is disclosed. In one embodiment, the launch monitor is capable of being transported and used in...
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7299685 |
Golf ball equator locating apparatus
An apparatus for locating and marking an equator of a golf ball is provided and includes a rotation plate shaped to support a golf ball is provided in a housing. The housing encloses a motor and...
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7281417 |
Method for evaluating quality of golf club head, method for conducting quality control of golf club head, method for manufacturing golf club head and golf club, golf club head, and golf club
Evaluation of the durability or the coefficient of restitution of a golf club head 1 is performed by measuring a response signal of an impact surface 10 of a golf club head 1 when imparting a...
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7263866 |
Golf club hosel bending fixture
The golf club hosel bending fixture immovably secures a golf club head therein in order to adjustably bend the hosel angle of the club head to “fine tune” the characteristics of the club. The...
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7243531 |
Method and apparatus for dynamically locating neutral shaft plane
Apparatus and method for locating the neutral bending plane of an elongated flexible shaft, typically a golf club shaft, by mounting one end portion of the shaft in a clamping mechanism having a...
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7162913 |
Method of evaluating restitution characteristic of golf club, system for evaluating restitution characteristic, and golf club
A method of evaluating restitution characteristics of a golf club head, a system for evaluating the restitution characteristics and a golf club, are provided in which a coefficient of restitution...
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7159451 |
Systems and methods for fitting golf equipment
A golf equipment fitting system that uses advanced technology to not only objectively identify the optimum equipment for the golfer, but to also identify and help correct swing flaws so that the...
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7143639 |
Launch monitor
A launch monitor that includes substantially all of its functional components on or within a housing is disclosed. In one embodiment, the launch monitor is capable of being transported and used in...
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7010965 |
Golf club fixture
A device for measuring alignment of a golf club is provided, and allows measurement of the lie angle and loft angle simultaneously. The strike face of the club is placed against an abutment member...
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6923039 |
Method and apparatus for testing golf balls
A method and an apparatus for measuring coefficient of restitution of an impact are disclosed. The apparatus includes a launching device, an enclosure, a second initially stationary object, and a...
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6877364 |
Digital swing weight scale
A swing weight scale is presented that measures the swing weight of a golf club by measuring the torque exerted by the club about fixed balance point. The apparatus comprises an elongated torque...
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6765156 |
Golf club swing weight balance and scale
A golf club swing weight balance and scale according to the invention includes a weighing beam having and extending between first and second ends, a grip backstop disposed at the second end of the...
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6758083 |
Apparatus and method of dynamic inertial balance for golf clubs
A dynamic inertial balancing system ( 10 ) uses a shaft ( 20 ) mounted to a base ( 16 ). A motor ( 46 ) or pulley system ( 42 ) imparts rotational torque on the shaft. A swing arm ( 18 ) is coupled...
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6742385 |
Method for selecting a golf ball, and method and system for selecting a golf club and a golf ball
A method for selecting a golf ball suitable for a golfer, comprising the steps of (i) obtaining head speed and backspin when a golfer hits a golf ball with a golf club; (ii) obtaining from the...
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6640200 |
Sports implement testing methods and apparatus
Methods and apparatus for testing a striking-type sports implement such as a bat is disclosed. In terms of apparatus, a system according to the invention includes a bat-swinging module, a...
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6602147 |
Method of evaluating a golf club
A golf club is evaluated by measuring a moment of inertia about an axis perpendicular to a face plane of the golf club head through a center of a mass of the golf club head. The golf club has the...
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6571640 |
Method and apparatus for measuring a flexural characteristic of a golf club shaft
An apparatus and a method for measuring the flexural characteristic of a golf club shaft. The apparatus includes a table having a clamping structure for clamping the golf club shaft thereto. A data...
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6551194 |
Captive ball golf practice tee with three-dimension velocity and two-axis spin measurement
Golf practice apparatus, comprising two sphere segments of a simulated golf ball mounted on opposing sides of a pivotal structure, strain gauges mounted on the structure to measure strains caused...
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6546802 |
Evaluation method of golf club and golf club
Disclosed is an evaluation method of a golf club, where a rear end portion of a club shaft is vibrated in a state where a tip portion of the club shaft is fastened to measure a frequency per unit...
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6526613 |
Golf shaft evaluator
An apparatus for locating the spine of a golf club shaft and performing dynamic stiffness measurements on the golf club shaft includes a clamp assembly and a flexing assembly. Both assemblies are...
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6286364 |
Method and apparatus for measuring aerodynamic characteristics of a golf ball
A method and a system for measuring the spin decay rate of a golf ball. The system includes an indoor testing area, a launching device, and a measuring device positioned at a final position along...
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6168535 |
Bio-rhythm balanced putter
A method of making a truly balanced golf putter that is normally swung in a parabolic path during the execution of a putting stroke. The putter shaft is attached to a golf putter head. The exact...
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6132326 |
Sports implement customizing system
The weight, balance point and swing weight of a sports implement such as a tennis racket can be automatically duplicated using a measuring unit and a computer program that uses data supplied by the...
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5814773 |
Golf club survey instrument with variable fulcrum
A golf club survey instrument includes a weight scale and a variably positionable fulcrum, enabling the instrument to be used determine the total weight of a golf club or the weight of each of its...
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5792946 |
Pendulum length balancing of golf clubs including graphite shafted golf clubs
A method for dynamically balancing any one or a plurality of golf clubs wherein each club in the plurality of clubs is balanced to the same equivalent pendulum length, the present method being...
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5763770 |
Design of golf clubs with node line mapping
Vibrational analysis is used to map the true sweet spot of a golf club. The testing device, method of testing, method of designing a golf club, and tuned golf clubs are disclosed.
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5721399 |
Golf club swing weight scale
A golf club swing weight scale includes dual weighing scales arranged to provide for the simultaneous measurement of both the total weight and the swing weight of a golf club or other object. The...
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5703294 |
Method of evaluating the vibration characteristics of a sporting implement such as a golf club
A method of evaluating the vibration characteristics of a golf club comprises identifying the natural frequencies of vibration of the golf club through a pseudorandom vibrational excitation of the...
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5672809 |
Method and apparatus for determining the performance of sports bats and similar equipment
A system for determining the performance of a first piece of sport equipment mounts the first piece of sports equipment such as a bat, golf club, tennis racket, or hockey stick having known...
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5629475 |
Method of relocating the center of percussion on an assembled golf club to either the center of the club head face or some other club head face location
A method for relocating the center of percussion of an assembled golf club such that it substantially coincides with the center of the club head face, the present method taking into account the...
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5616832 |
System and method for evaluation of dynamics of golf clubs
A system and method for evaluation of dynamics of golf clubs comprising a microphone (23) inserted inside the golf club shaft (18) which detects vibrations as sound waves and transmits signals...
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5608160 |
Balancing golf clubs to a common period of oscillation by balancing such clubs to a common equivalent pendulum length
A method for dynamically balancing any plurality of golf clubs wherein each club in the plurality of clubs is balanced to the same equivalent pendulum length, the present method being based upon...
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5569097 |
Balanced golf club
The invention is directed to a golf club, such as a driver, wherein the club includes a shaft, at the lower end of which a head is mounted, and at the upper end of which a grip is mounted. The club...
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5540090 |
Head balancing fixture and method of using same
A head balance apparatus is provided determining the face and the loft angles of the club face when the club is balanced in its impact orientation. It includes a base, a vertical post on the base,...
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5528927 |
Center of gravity locator
A locator 20 for facilitating the location of the center of gravity of an object such as a golf club head 130 includes a balancing member 42 having a rod 88 extending in a first direction from the...
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5515717 |
Matching golf clubs through deflection technique
A deflection technique utilizing an electronic force gauge to match the flexibility of a set of golf clubs consisting of a bracket at one end of a rectangular backboard which holds the butt end of...
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5513844 |
Golf club fitting apparatus
A golf club fitting apparatus and method utilizes a number of different club heads, the club heads having hosel or shaft receiving bores at different angles and securing devices for releasably...
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5417108 |
Method for dynamically balancing golf clubs on a conventional swing weight scale using radius of gyration as the controlling parameter
A method for dynamically balancing a plurality of golf clubs on a conventional swing weight scale using radius of gyration as the controlling parameter wherein a specific radius of gyration/swing...
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5318296 |
Matched sets for golf clubs having maximum effective moment of inertia
A dynamically matched set of golf clubs having a variable optimum moment of inertia for each club in the set wherein each club has a moment of inertia proportional to the lie angle of the club and...
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5309753 |
Apparatus and method for determining the inertia matrix of a rigid body
The experimental determination of the moments of inertia of a rigid body such as a golf-club head about each of three mutually perpendicular axes is described. The club head is suspended so as to...
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5285680 |
Golf club measuring apparatus and method
An apparatus for determining the length and swing weight of a golf club having a shaft and a head, the head having a sole, there being a top at the end of the shaft remote from the head comprising...
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5277059 |
Method for dynamically balancing golf putters and other implements using radius of gyration as the controlling parameter
A method for dynamically balancing golf putters using radius of gyration as the controlling parameter wherein the center of precussion location on the putter club face is re-located so as to...
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5269177 |
Apparatus and method for determining the center of percussion ("sweet spot") for baseball bats and other objects
Apparatus and method is provided for determining the subjective sweet spot of a baseball bat, softball bat or other object of percussion. The subjective sweet spot is determined by first measuring...
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5152527 |
Sporting equipment
The swing of a golf club is changed by adding an additional weight, the center of gravity of the additional weight being at or below the center of gravity of the hand position on the gripping...
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5018382 |
Apparatus for measurement and calculation of moment of inertia
An apparatus for measuring moment of inertia incorporating a torsional pendulum and an analog electronic circuit. The circuit measures the period of oscillation, sets a scaling factor equal to the...
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