Bubble Leveler Patents (Class 473/241)
  • Patent number: 9108092
    Abstract: An adjustable golf club putter head, having a body portion with adjustment ports for receiving adjustment screws and locking ports for receiving locking screws, adjustment screws to be screwed through the adjustment ports formed in the body portion, locking screws to be screwed through the locking ports formed in the body portion, and a moveable face having a striking surface. The face has holes for receiving the adjustment screws, and holes for receiving and securing face locking screws. The adjustment screws are screwed independently inwardly and outwardly in a direction extending between the body portion and the face adjust the length of the screw portions extending between the body portion and the face, thereby adjusting the distance between a number of points on the body portion and the face. After adjustment, the locking screws secure the relative positions of the body portion and the face.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: August 18, 2015
    Inventor: Stephen D. Warner
  • Patent number: 8870674
    Abstract: A golf club head having an adjustable hosel and a level is disclosed herein. The adjustable hosel is movable between a plurality of positions to adjust at least one feature of the golf club head, such as loft, lie, and/or face angle, and is held in place by an adjustment knob or adjustment lever. The level preferably is a bubble level that is disposed proximate a scale to indicate to a golfer an optimal loft, lie, and/or face angle of the golf club head.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: October 28, 2014
    Assignee: Callaway Golf Company
    Inventor: Craig E. Abbott
  • Publication number: 20140315653
    Abstract: The combination set of tools comprising a slope reading tool and rotary clip head and angle plate is designed to build putting confidence and shave strokes off every golfer's game. The slope reading tool is a high accuracy “bubble level” device that provides actual slope angle around the golf cup to give golfer a quick and accurate reading of the green's contours. The set of rotary clip head and angle plate which is attached to the putter shaft can be rotated to the angle indicated on the slope reading tool to make the adjustment to achieve a more accurate putting. This combination set is intended to help golfers on putts with subtle or confusing breaks and works best on putts within 12 feet of the hole.
    Type: Application
    Filed: April 19, 2013
    Publication date: October 23, 2014
    Inventor: Kaiser Wong
  • Publication number: 20140200090
    Abstract: Improved golf swing apparatus and methods that include a short shaft (preferably about 13 inches) training club having a training grip and a club head that gives instant visual feedback on swing alignment to a user during the motion of swinging. A bubble or spirit level and light-emitting end of the shaft provide further feedback on a user's swing alignment in terms of correct wrist and shaft position.
    Type: Application
    Filed: January 17, 2013
    Publication date: July 17, 2014
    Inventor: Dan L. Denson
  • Patent number: 8545340
    Abstract: A golf club having at least one directional based graphic on the golf club it disclosed. More specifically, the golf club in accordance with the present invention will have at least one directional based graphic that will only be visible when the golf club is oriented in a desirable direction while staying invisible in all other undesirable directions.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: October 1, 2013
    Assignee: Cobra Golf Incorporated
    Inventors: Ryan L. Roach, Peter L. Soracco
  • Publication number: 20130210535
    Abstract: An instructional golf club for a user having a swing orientation includes a shaft having a first end and a second end. A club head is secured to the second end. A grip is secured to the first end and includes a first portion configured to receive a first hand of the user and a second portion configured to receive a second hand of the user. The second portion is spaced from the first portion such that the first and second hands of the user are spaced from one another along the grip. A level indicator indicates when the shaft extends parallel to the ground.
    Type: Application
    Filed: August 17, 2012
    Publication date: August 15, 2013
    Inventor: Daniel Moss
  • Publication number: 20120190471
    Abstract: The Fox Sharpshooter Putter grip is a putter grip which contains three unique and innovative features. These features are the subject of this patent application. The first feature is a level bubble vial (bubble) imbedded in the back of the grip to aid the golfer to determine the degree of slope of the putting surface. The second feature is a vertical chart (sight) on the back of the grip to help the golfer determine the length of the putt. The third feature is a level bubble vial imbedded in the side of the grip (level) to help the golfer determine the slope of the putting surface. The aim of the applicant is to patent these three aforementioned putter grip features.
    Type: Application
    Filed: January 25, 2011
    Publication date: July 26, 2012
    Inventor: Andrew Criddle Fox, JR.
  • Publication number: 20110092306
    Abstract: Golf putters comprising features that assist in locating a directly overhead view of the putter heads include sight aligning marks, sight aligning notch, rods and plates are disclosed. Putter heads with interchangeable mirror, weight and sighting attachments designed for quick release and replacement are described with interconnected attachment mounting faces. The combination of threaded aperture, apertures in the attachments and screws requiring the use of tools releasably interconnect the mirror attachment, sighting attachment or weight attachment to the putter head. Openings or contours are described that assist the golfer in estimating the distance between the golfer and a hole or cup on the green. Methods of customizing, calibrating or indicating in golf putters to individual golfers are also disclosed, including the use of weights to alter the weight distribution of in the putter head.
    Type: Application
    Filed: October 16, 2009
    Publication date: April 21, 2011
    Inventors: Michael Lee, Mark Kenworthy
  • Patent number: 7824275
    Abstract: A golfing aid 11 having two levelling sensors 32, 33 mounted on a D shaped sensor body 31 and a mounting means having three adjustable connectors 41, 51, 61 for adjusting the orientation of the D shaped sensor body 31 and an indication output in the form of spirit level bubbles 32, 33 for providing an indication of the sensed level orientation. A system of interactive adjustable connectors linked together to provide such variability that allows connection to any one of left and right handed clubs with different shaft diameters, different angle of putter shaft to putter head and different length shafts and different length putter heads to allow for substantially aligned overlying of the D shaped sensor body 31 over the putter head 23 while substantially aligning the golfing aid front face 34 correctly with the putter head front face 24.
    Type: Grant
    Filed: September 4, 2006
    Date of Patent: November 2, 2010
    Assignee: Indevcom Pty Ltd.
    Inventor: Marino Sussich
  • Publication number: 20100248854
    Abstract: The present invention is a method and apparatus that helps golfers consistently execute the ideal golf swing. To consistently execute the ideal swing, golfers must be able to consistently align the shafts of their clubs at the ideal angle with respect to the ground during setup, prior to executing the swing. The present invention helps golfers achieve such consistency by mating the golf club with a level-indicating device that shows when the golf club angle matches the ideal angle. The level-indicating device is a small, lightweight bubble tube, of the type commonly found in carpenter level tools, that quickly clips onto an off of the golf club shaft. The level-indicating device is sufficiently small and lightweight that it can be used during both practice and actual play. The same device may be used on different golf clubs to show the ideal angle for the club in use.
    Type: Application
    Filed: March 24, 2009
    Publication date: September 30, 2010
    Inventor: Thomas Calvin Cannon, JR.
  • Patent number: 7775899
    Abstract: The present invention helps golfers consistently execute the ideal golf swing. To consistently execute the ideal swing, golfers must consistently align the shafts of their clubs at the ideal angle with respect to the horizontal at setup, prior to executing the swing. The present invention helps golfers set their clubs at the ideal angle by attaching an angle indicating device to the club that indicates the angle of the club with respect to the horizontal. The preferred embodiment of the angle indicating device is a small, lightweight circular bubble level, that has angle markings around its edge, and quickly clips onto an off of the golf club. The angle indicating device is sufficiently small and lightweight that it does not affect the golfers swing. The same device may be used on different golf clubs to show the desired angle for the club in use.
    Type: Grant
    Filed: August 31, 2009
    Date of Patent: August 17, 2010
    Inventor: Thomas Calvin Cannon
  • Publication number: 20090181786
    Abstract: Golf putter that will aid golfer in determining slope of green and putting target line to compensate for slope of green.
    Type: Application
    Filed: October 14, 2008
    Publication date: July 16, 2009
    Inventor: Thomas F. McKiernan
  • Publication number: 20090137332
    Abstract: A golfing aid 11 having two levelling sensors 32, 33 mounted on a D shaped sensor body 31 and a mounting means having three adjustable connectors 41, 51, 61 for adjusting the orientation of the D shaped sensor body 31 and an indication output in the form of spirit level bubbles 32, 33 for providing an indication of the sensed level orientation. A system of interactive adjustable connectors linked together to provide such variability that allows connection to any one of left and right handed clubs with different shaft diameters, different angle of putter shaft to putter head and different length shafts and different length putter heads to allow for substantially aligned overlying of the D shaped sensor body 31 over the putter head 23 while substantially aligning the golfing aid front face 34 correctly with the putter head front face 24.
    Type: Application
    Filed: September 4, 2006
    Publication date: May 28, 2009
    Applicant: INDEVCOM PTY LTD
    Inventor: Marino Sussich
  • Patent number: 7387576
    Abstract: The invention provides a golf club, generally indicated by reference numeral (10). The golf club (10) includes a shaft (14) and club head (12) connected to the shaft (14). The golf club (10) further includes means defining a reflective surface (16) positioned so that when a user of the golf club (10) addresses a ball an intended target towards which a said ball is to be struck is visible in the reflective surface (16). The golf club also includes level indicators (40, 50), in the form of spirit levels, mounted on the head (12) to permit a user to determine when the head (12) is in a desired horizontal orientation when addressing a ball with the golf club (10). The level indicators (40, 50) is positioned to form an alignment aid, the alignment aid including parallel markings (38) on the reflective surface (16) in register with corresponding ends of the spirit levels (40,50).
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: June 17, 2008
    Inventor: John Edward James Agnew
  • Patent number: 7252596
    Abstract: A golf club alignment device, especially for use with a putter, the device comprising a viewer which removably and adjustably attaches to the shaft of a club. The device provides for viewing downwardly to see the target which is horizontally distant from the user, the device providing a level for leveling and a crosshair sight for indicating slope of the surface and the position of the club face with relation to the slope, the device further providing for adjustable location above the club head.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: August 7, 2007
    Inventor: Thomas G. Matousek
  • Patent number: 7220187
    Abstract: Apparatus and a method for computing and outputting a putting backstroke instruction for a planned putt of a golf ball during recreational play. A computing means includes means for initializing or customizing according to a specific golfer putting on a specific golf green, the golfer putting at least one initializing putt a pre-selected distance on a level area of a green. During recreational play thereafter, in the preferred embodiment of the invention, the golfer, for each segment of a planned putt enters the applicable grade and length. The computing means outputs to the golfer an instruction for the length of the backstroke recommended, i.e., required for the planned putt. Another embodiment of the invention requires the inputting of the length of the planned putt but excludes the inputting of the grade of the green.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: May 22, 2007
    Inventors: Gary E. Schmidt, Philip A. Schmidt
  • Patent number: 7186185
    Abstract: A customizable alignment sighting device for a golf club is mounted to an upper surface of the head of the golf club with a sighting element providing the user a visual target indicator for desired alignment of the club head with the user's line of sight. The sighting element can be readily adjusted for the user's preferences. When not aligned, the sighting element provides an indication of the magnitude and direction of misalignment. In one embodiment, the device is shaped as a planar disc mounted on the upper surface of the club head by leveling posts spaced around its periphery. The sighting element is a concave lens or lenticulated grid or grill superimposed on a target image. In another embodiment, the device has a 3D device body mounted in a mounting cup or socket fastened to or formed in the head of the golf club.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: March 6, 2007
    Inventor: Lajos I. Nagy
  • Patent number: 7063625
    Abstract: A golf putting aid is used with a putter having a handle, a putter head, and an elongated putter shaft. The putting aid includes an elongated member affixed to the putting aid and an attachment member capable of detachably securing the putting aid to the shaft of a putter. The method comprises attaching the putting aid to the shaft of the putter and using a level on the putting aid to determine the slope of a green between two points on the surface of the green. The putting aid may be used either with, or without the putter.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: June 20, 2006
    Inventor: James L. Murtha
  • Patent number: 6814672
    Abstract: A positioning device for assisting an individual in properly positioning the club face of a golf club so that a golf ball travels a desired path when struck by the golf club. The positioning device includes a hollow body, which is generally symmetrically disposed about the shaft of a golf club. The body includes an upper section and a lower section and an opening therebetween. The opening in the body receives the shaft of the golf club. The upper and lower sections each have a left and a right side. The right side of the upper section is hingedly connected to the right side of the lower section. A fastener detachably connects the left side of the upper section to the right side of the lower section. The upper section has a recess formed therein for receiving a tubular spirit. The tubular spirit is curved about the axis of the shaft of the golf club. The curve of the spirit level extends in a first plane. the first plane extends substantially perpendicular to the axis of the shaft of the golf club.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: November 9, 2004
    Inventor: Andrew Spitzer
  • Publication number: 20040185955
    Abstract: This optical aiming device, that is part of or attaches to a golf club grip or shaft, allows golfers to align their clubface to a predetermined target by sighting through the grip end of the golf club. By incorporating a sighting device in golf grip during manufacturing or by adding this accessory aiming device to an existing grip, the golfer's eyes, sighting device and target can all be on the same line. The device makes it possible to align the clubface to the target with a very high degree of accuracy. This device may be used during play or as a practice device to check the player's ability to aim the clubface properly. This device is particularly useful when aiming a putter to a desired target.
    Type: Application
    Filed: March 6, 2004
    Publication date: September 23, 2004
    Inventor: Mark Rocconi
  • Publication number: 20040176176
    Abstract: A golf putting aid is used with a putter having a handle, a putter head, and an elongated putter shaft. The putting aid includes an elongated member affixed to the putting aid and an attachment member capable of detachably securing the putting aid to the shaft of a putter.
    Type: Application
    Filed: March 12, 2004
    Publication date: September 9, 2004
    Inventor: James L. Murtha
  • Patent number: 6739981
    Abstract: A golf club angular orientation indicating device includes an indicator housing, a switch plate and a shaft clamp. The shaft clamp is slidably received by the indicator housing. An orientation bore is formed in the indicator housing to receive the switch plate. The switch plate is retained on one end by the indicator housing and on the other end by a power plate. The switch plate includes at least two tilt switches mounted on at least two spring loaded pivot plates. A hold down bolt is used to adjust the angular orientation of the at least two tilt switches. Power is preferably supplied to the at least two tilt switches through at least one battery and an on-off switch. Closing the circuit of the at least two tilt switches will supply power to a light emitting device and/or a sound emitting device.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: May 25, 2004
    Inventor: Teh-Cheng Lin
  • Patent number: 6716109
    Abstract: A golf putting aid is used with a putter having a handle, a putter head, and an elongated putter shaft. The level includes an elongated member affixed to the level and an attachment member capable of detachably securing the handle to the shaft of a putter. The method comprises attaching the level to the shaft of the putter and using the level to orient the putter shaft in a vertical plumb bob position. The putting aid may be used either with, or without the putter.
    Type: Grant
    Filed: January 23, 2002
    Date of Patent: April 6, 2004
    Inventor: James L. Murtha
  • Publication number: 20020160846
    Abstract: A positioning device (A) for assisting an individual in properly positioning the club face of a golf club so that a golf ball travels a desired path when struck by the golf club. The positioning device (A) includes a hollow body (2) which is generally symmetrically disposed about the shaft (5) of a golf club. The body includes an upper section (4) and a lower section (6) and an opening (32) therebetween. The opening (32) in the body (2) receives the shaft (5) of the golf club. The upper and lower sections each have a left and a right side. The right side of the upper section is hingedly connected to the right side of the lower section. A fastener detachably connects the left side of the upper section to the left side of the lower section. The upper section (4) has a recess formed therein for receiving a tubular spirit (60). The tubular spirit (60) is curved about the axis of the shaft of the golf club. The curve of the spirit level extends in a first plane.
    Type: Application
    Filed: November 21, 2001
    Publication date: October 31, 2002
    Inventor: Andrew Spitzer
  • Patent number: 6468166
    Abstract: A positioning device for assisting an individual in properly positioning the club face of a golf club so that a golf ball travels a desired path when struck by the golf club. The positioning device includes a hollow body which is generally symmetrically disposed about the shaft of a golf club. The body includes a front surface and a rear surface and an opening extending therebetween. The opening in the body receives the shaft of a golf club. The body further includes an upper section and a lower section each having left and right sides. The right side of the upper section is hingedly connected to the right side of the lower section. A fastener detachably connects the left side of the upper section to the left side of the lower section. The upper section has a recess formed therein for receiving a tubular spirit level. The tubular spirit level is curved about the axis of the shaft of the golf club. The curve of the spirit level extends in a first plane.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: October 22, 2002
    Inventor: Andrew Spitzer
  • Patent number: 6165083
    Abstract: A golf putting aid is disclosed that includes a level detector for measuring a slope of a golf green and for generating an electrical signal representing the measured slope, a control circuit coupled to the slope measuring sensor for receiving the electrical signal and for generating an indicator signal representing information that will aid a golfer while making a putt on the golf green, and an indicator coupled to the control circuit for receiving the indicator signal and for indicating the information represented by the indicator signal to a golfer. Preferably, the level detector measures the slope of a golf green at at least two locations and generates electrical signals representing the measured slope at each location. The control circuit then processes the electrical signals to compute an offset distance from the hole at which the golfer should aim so as to compensate for the measured slopes of the green.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: December 26, 2000
    Assignee: Sydney L. Stenger
    Inventors: Sydney L. Stenger, Erick R. Moody
  • Patent number: 6146285
    Abstract: A putter alignment device is disclosed and includes a mounting frame for engaging a putter and for aligning the device relative to the putter face. A mirror frame having a mirror, employing a novel indicating line, supported thereby is coupled pivotally to the mounting frame for aligning the putter relative to a target. A securing arrangement is adapted to engage the mounting frame at a portion thereof, extend behind the putter, and engage another portion of the mounting frame to attach removably the putter alignment device on the putter. Inventive sight members facilitate positioning of the eyes of the golfer relative to the target line as a part of the alignment method.
    Type: Grant
    Filed: December 10, 1998
    Date of Patent: November 14, 2000
    Inventor: Jeffrey S. Winslow
  • Patent number: 6071197
    Abstract: A device for teaching correct putting that can be attached to the shaft of a putter. A mirror is pivotally attached to an arm which extends behind and is parallel to the face of the putter such that the center of gravity for the mirror is between the pivot point and the face of the putter. The mirror is oriented at such an angle that a golf ball and a target cup can be viewed simultaneously by a golfer using a putter to which the device has been attached. Rotation of the mirror caused by the relative position of the pivot point and the center of gravity for the mirror will, under the influence of gravity, maintain this desired visual image in the mirror throughout the putting stroke. A straight line is placed on the reflecting surface of said mirror in such an orientation that the plane which contains the visible line and which is perpendicular to the reflecting surface of said mirror is perpendicular to the face of the putter and aligned with the desired point of impact on the face of the putter.
    Type: Grant
    Filed: December 3, 1998
    Date of Patent: June 6, 2000
    Inventor: Rick Curtis
  • Patent number: 6001025
    Abstract: A golf putting aid is provided having an elongated body member difining an interior cavity. An attaching device, such as a clamp, is configured on the body member to removably secure the body member to the shaft of a golf putter. A weighted mass, such as a fluid, fills a portion of the interior cavity of the body member to increase the smoothness and follow through of a putt stroke.
    Type: Grant
    Filed: June 30, 1998
    Date of Patent: December 14, 1999
    Inventor: David T. Blackmon
  • Patent number: 5935015
    Abstract: The present invention contemplates an improved indicator for use in combination with a golf putter to provide improved putting performance by giving the golfer a point of focus on which to concentrate during putting, and by indicating whether the putting stroke is on or off line. The indicator includes a fluid filled container with a transparent face, and a ball or similar element movably disposed in the container. The container is fixed atop or adjacent to a putter head in a manner that a center line therein, which is visible through the transparent face of the container, is centered with respect to the putter head and extends at a right angle to the putter face.
    Type: Grant
    Filed: March 19, 1998
    Date of Patent: August 10, 1999
    Inventor: Alvan D. Spiegel
  • Patent number: 5904625
    Abstract: A golf putting practice device includes a support body and a rod. The support body includes a housing, a pair of front leg members and a rear leg member. Each front and rear leg member is pivotally mounted to the housing. Each front and rear leg member is movable between lower extended and upper stored positions. The rod in the form of a series of rod segments telescopingly extendable and retractable with respect to one another. The rod also has a series of markings thereon indicating different distances from the golf ball. The rod is at the first end mounted to the housing of the support body such that the rod is disposed partially within a central interior passageway of the housing and elevated a predetermined height above a surface. The device further includes a surface contour indicating arrangement which includes a base provided on the housing and a ball rollably on the base and a cover rotatably mounted to the base.
    Type: Grant
    Filed: September 8, 1998
    Date of Patent: May 18, 1999
    Inventor: Craig P. Shillingburg
  • Patent number: 5893804
    Abstract: A golf club structure includes a shaft having a first end portion and a second end portion, an alignment apparatus including a prism pivotally mounted on the first end portion of the shaft, and a first alignment line formed on the prism, and a head fixedly mounted on the second end portion of the shaft and including a top face and a bottom face, and a second alignment line formed on the top face of the head and aligning with the first alignment line.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: April 13, 1999
    Inventor: Shui-Ho Pan
  • Patent number: 5857920
    Abstract: A golf club of the type for putting and driving a golf ball. The golf club has a reflective surface which is positionable to direct toward a golfer's eye an alignment image including an image of the ball and the target into which the ball is directed so as to aid the golfer in positioning the head of the golf club relative to the ball. The reflective surface is removable from the head so as to be stowed when not in use. The golf club also includes a leveling device in the head of the club to indicate to the golfer when the head is aligned horizontally. The golf club further includes a first striking surface with a tilted striking surface portion for imparting spin to the golf ball, and a second striking surface opposite the first for directing the ball in an upward trajectory. The tilted striking surface may include a flat central portion and an adjacent flat end portion, both of which contact the golf ball.
    Type: Grant
    Filed: May 6, 1997
    Date of Patent: January 12, 1999
    Inventor: Joseph Hong
  • Patent number: 5820476
    Abstract: A golf putter leveling system including a shoe level adapted for securement to a golf shoe. A putter level is provided that is adapted for securement to a shaft of a golf putter. The putter level includes a base portion having a lower arcuate recess and an upper arcuate recess. The lower arcuate recess has a pair of detents disposed on opposing sides thereof. The lower arcuate recess snapidly engages the shaft of the golf putter. The upper arcuate recess has a level portion disposed therein. A putter leveler is adapted for securement to the shaft of the golf putter. The putter leveler has an upper portion defined by an arcuate recess for engaging the shaft of the golf putter. The putter leveler has a lower portion defined by outwardly extending legs for supporting the golf putter at an even level so as to zero the putter level.
    Type: Grant
    Filed: November 17, 1997
    Date of Patent: October 13, 1998
    Inventor: Louis Amato
  • Patent number: 5755623
    Abstract: A golf green level determining removable accessory for temporary securement to a shaft of a golf putter, to in effect create a level tool having the length of the golf putter. With this accessory temporarily in place, the golfer lays his or her putter at selected places on the contour of the grass surface of a golf green to determine the respective slope in the selected locale. A housing of this accessory positions and holds an elongated sealed liquid and air level; receives and holds at least one magnet; temporarily receives, via a concave portion thereof, a portion of the shaft of a golf putter; receives some calibration shims or an adjustable set screw, to initially, when necessary, adjust the level air bubble at the zero position, when the golf putter is laid on a known level underlying surface with the accessory in the temporary position thereof. If a golf putter has a nonmetallic shaft, then a metal snap on partial sleeve is placed on this shaft.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: May 26, 1998
    Inventor: John M. Mizenko
  • Patent number: 5707299
    Abstract: A golf club putter head affixing an elongate spirit level may be tilted relative to earth and rested on its two frustaconical projections so as to accurately measure earth inclination nonetheless that, inter alia, the sole of the putter head is curved, and thus unsuitable to serve to reference the putter head to the earth's surface. The two frustaconical projections are preferably spaced parallel, equal length, maximally separated and axially weighted. The spirit level is preferably both removably affixed--permitting use of the putter in regulation play--and of maximum elongate extent. A preferably offset hostel is affixed in a position preferably substantially midway between maximally-separated spaced-parallel frustaconical projections.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: January 13, 1998
    Inventor: Roger D. McKenna
  • Patent number: 5632484
    Abstract: A referenced, liquid-filled, domed vial, attachable to the free-end of a golf club shaft as indicative of a selected postural shaft angle, offset from the perpendicular.
    Type: Grant
    Filed: August 26, 1994
    Date of Patent: May 27, 1997
    Inventor: William S. Lambert
  • Patent number: 5509657
    Abstract: A golf club positioning and position indicating device having a mounting base that is releasably attached to the shaft of a golf club below the handgrip of the club. A positioning head support for support and orientation of a positioning head which can be visually inspected by a golfer when addressing the golf ball in preparation for the intended golf stroke. The positioning head support is releasably received in specifically oriented relation by the mounting base to provide for simple and efficient assembly or disassembly of the positioning head relative to the mounting base. A spirit level support is connected in adjustable pivotal relation with the positioning head support and retains a circular spirit level of a dimension that can be easily visually inspected by a golfer holding the golf club at the ball addressing position.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: April 23, 1996
    Inventor: Joe M. Guthry