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An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7691005 | Golf ball Golf ball 2 of the present invention has a group 4 of multiple marks which are visible at one view. This group 4 of marks includes a target mark t consisting of single or multiple marks provided along one great circle, and an inclined mark k whi... | 04/06/2010 |
| 7530899 | Ball implement for practicing golf putting Putting is a very important factor in golf playing. Above all, a putting distance feeling is the hardest to master, and many rounds in golf courses are said to be required for improving putting. Nevertheless, a putter mat is normally only 2- to 3-m long, and a carpe... | 05/12/2009 |
| 7347790 | Golf swing training device A golf swing training device including a training ball constructed of a compactable, resiliently deformable foam material, the training ball including at least two generally flat club impact surfaces each formed along a chord plane angled between approximately five ... | 03/25/2008 |
| 7300357 | Practice sport projectile having a through hole Non-standard sport projectiles, in accordance with this invention, include at least one linear through hole. As this non-standard sport projectile passes through the air, after being hit by, for example, a golf club, the non-standard sport projectile spins. When the... | 11/27/2007 |
| 7195564 | Golf ball for putting practice In a golf ball having a plurality of dimples, a groove having a certain width and depth is formed on a surface of the golf ball, the depth of the groove extending below the surface. A belt having a certain width and height may be formed on a surface of the golf ball... | 03/27/2007 |
| 7156757 | Golf ball with improved flight performance A golf ball with aerodynamic coefficient magnitude and aerodynamic force angle, resulting in improved flight performance, such as increased carry and flight consistency regardless of ball orientation. In particular, the present invention is directed to a golf ball h... | 01/02/2007 |
| 7140972 | Chemiluminescent golf ball An illuminated golf ball comprised of an outer translucent layer and cover, and a spherical inner core of translucent plastic, filled with chemiluminescent liquid, such as Cyalume.TM. The two components of the chemiluminescent liquid are held separate by a membrane ... | 11/28/2006 |
| 7131914 | Method of making a golf ball with a multi-layer core A multilayer golf ball including a solid center having a center hardness, a plurality of laminates cut into a plurality of shapes formed around the center to create an inner ball, and a cover formed around the inner ball, wherein the plurality of layers can include ... | 11/07/2006 |
| 7104900 | Diagnostic device for analyzing a golf swing A golf mat similar to the type used at a driving range, including a hole for inserting a golf tee, with the addition of a pressure sensor (transducer) embedded in one corner of the mat, sandwiched between a top artificial grass and a bottom rubber backing of the mat... | 09/12/2006 |
| 7077759 | Golf putting training device There is provided a golf putting training apparatus that is portable and operable with standard USGA golf equipment. The apparatus include parallel channels each emanating from a respective dimple. The channels are separated by a distance such that a golf ball place... | 07/18/2006 |
| 7066840 | Golf ball A golf ball includes a ball cover including a first and second hemispheric cups attached to each other to form a hollow spheroid and a solid ball core covered by the ball cover. Each of the first and second hemispheric cups has two semi-conical engagement edges fitt... | 06/27/2006 |
| 7048534 | Molding processes and apparatuses for forming golf balls Molding equipment and related techniques for forming a golf ball with one or more deep dimples are disclosed. The golf ball comprises a core and a cover layer, wherein the cover layer provides one or more deep dimples that extend through the cover layer to and/or in... | 05/23/2006 |
| 7037218 | Practice insertion tip golf tee anchor A practice golf tee that is substantially indestructible. It includes an insertion tip at the top of the tee that goes into one of the existing holes in a practice golf ball or regulation golf ball in which hole(s) are incorporated to accommodate the insertion tip. ... | 05/02/2006 |
| 6974390 | Golf practice system A golf practice and exercise system having a practice ball and a target assembly, using either a conventional or practice golf club. The practice ball is any generally spherical shape made of a flexible material and having an internal pressure of approximately atmos... | 12/13/2005 |
| 6939244 | Golf swing training aid The present invention is a golf swing training apparatus comprising, an elongated shaft having a lower end and an upper end, wherein the upper end includes a handgrip. A club head having a ball striking face, a backside face and a ball-capturing cavity within the cl... | 09/06/2005 |
| 6913550 | Golf ball with improved flight performance A golf ball with aerodynamic coefficient magnitude and aerodynamic force angle, resulting in improved flight performance, such as increased carry and flight consistency regardless of ball orientation. In particular, the present invention is directed to a golf ball h... | 07/05/2005 |
| 6872150 | Putting practice kit and method A practice putting kit and training method for practicing the aiming a golf ball, aiming the putter, and keep returning the putter to a square position to the golf ball. The kit includes a laser golf ball that produces a planar, laser beam of light. Printed on the o... | 03/29/2005 |
| 6852039 | Golf ball with textual instructions positioned thereon The present invention includes an instructional golf ball including a spherical body having an outer surface with a plurality of dimples formed therein. Situated on the outer surface of the body is instructional indicia. Such instructional indicia include text for p... | 02/08/2005 |
| 6773356 | Golf swing practice apparatus and associated method A golf swing practice apparatus comprises a playing surface for a golfer to thereon practice a swing, and a reflector positioned adjacent the playing surface, the reflector comprising a curved reflecting surface adapted for focusing a reflection of a golf ball so as... | 08/10/2004 |
| 6752725 | Golf ball having direction-sighting indications and mold for manufacturing the same A golf ball having direction-sighting indications, with which a golfer can easily sight a direction for the golf ball to fly when he/she strikes the ball with one of golf clubs, and a mold for manufacturing such golf balls. The golf ball according to the present inv... | 06/22/2004 |
| 6739980 | Golf aiming and alignment system and method A system and method for improving a golfer's putt is provided. Included is a ball, putter, and ball marker, each of which bear directional indicia, such as arrows or triangles. The indicia of the various elements are aligned toward the hole, with the indicia of each... | 05/25/2004 |
| 6729969 | Golfing aid A golfing aid having a body that includes two partially spherical ends with the same radii as each other, whereby the contact points are positioned between 4 and 20 millimetres apart, and methods of producing and using such a golfing aid. ... | 05/04/2004 |
| 6551195 | Golf ball A golf ball having a surface with an alignment indicia which includes a longitudinal segment and a latitudinal segment is disclosed herein. Preferably, the longitudinal segment extends along a pole of the golf ball and has a length ranging from 1.00 inch ... | 04/22/2003 |
| 6422949 | Golf ball and putter alignment combination A golf ball and putter alignment combination is disclosed herein. The golf ball has a surface with alignment indicia which includes a longitudinal segment and a latitudinal segment. Preferably, the longitudinal segment extends along a pole of the golf bal... | 07/23/2002 |
| 6045454 | Practice golf ball A practice golf ball is produced by sewing up at least two pieces of preferably symmetrical surface cloth to form a ball shell defining a spherical space therein and evenly stuffing fibrous material into the spherical inner space via an opening left on a ... | 04/04/2000 |
| 6007436 | Method for employing light from a laser generator beam to assist in aiming a golf ball and apparatus therefor The present invention is to a projected laser beam in a method for aligning a golf ball prior to hitting it with a golf club and a method for determining the proper feet position of a golfer prior to that golfer's hitting the golf ball. The laser beam is ... | 12/28/1999 |
| 6004223 | Golfball stencil An alignment aid for golfers consisting of a rigid hemispherically shaped body having two intersecting slits therein for making a mark on a golf ball which indicates the intended path of the golf ball and the preferred orientation of the club face for obt... | 12/21/1999 |
| 6004220 | Putting training device A putt training device is provided which preferably includes a body having substantially the shape of a cylinder and a moment of inertia about its longitudinal axis substantially in the range of 79.31 to 84.21 grams-centimeters squared. The body also has ... | 12/21/1999 |
| 5885165 | Putting training apparatus The present invention provides a putting training apparatus (10) which, when used repeatedly by a golfer, permits him to develop a consistent stroke and accurate putting shot. The putting training apparatus (10) includes a pair of balls (12), preferably r... | 03/23/1999 |
| 5830077 | Impact detector for use with a golf club A device for assisting a golfer in improving his or her golf swing. The device includes an impact detector mounted to the club head of a golf club. The impact detector provides an instantaneous visual or audible indicator of when a predetermined area, e.g... | 11/03/1998 |
| 5782702 | Practice golf ball A practice golf ball having a multiplicity of dimples formed in its surface has a weight of 46.5-49.0 grams and undergoes a distortion of 2.5-4.0 mm under a constant load of 100 kg. A percent dimple volume Vr is in the range of 0.7%ࣘVrࣘ1.1% wherein th... | 07/21/1998 |
| 5782703 | Practice golf ball A practice golf ball having a multiplicity of dimples formed in its surface has a weight of 46.5-49.0 grams and undergoes a distortion of 2.5-4.0 mm under a constant load of 100 kg. Those dimples having a diameter/depth (Dm/Dp) ratio between 10/1 and 15/1... | 07/21/1998 |
| 5743808 | Baseball throwing trainer A pitching/throwing device comprising a first ball, a second ball, and connector for connecting the first and second balls to each other. In the preferred embodiment, the balls are standard baseballs and the connector comprises a dowel screw. During use, ... | 04/28/1998 |
| 5718642 | Golf club swing training device A golf club cover practice device, suitable for attaching to the head of a golf club, driver (11) that allows one to practice accuracy while swinging a golf club towards a golf ball size practice disk (22). In a preferred embodiment the device generally i... | 02/17/1998 |
| 5630763 | Golf training ball A golf training ball comprising at least two cloth stuffed elements each element featuring a sealing point and, stitching to combine the cloth stuffed elements into a unitary ball, where the stuffing comprises a soft fiber, and the cloth elements and stit... | 05/20/1997 |
| 5601503 | Golf ball A golf ball having a multiplicity of dimples in its surface is adjusted to a weight of 40 to 45 grams and a diameter of 43 to 47 mm. The dimples occupy at least 60% of the ball surface and satisfy 0.35ࣘV0 ࣘ0.60 wherein V0 is the ... | 02/11/1997 |
| 5599238 | Golf practice device A golf practice device includes a tethered practice ball which enables the user to practice full-swing golf shots in an area as small as 25-30 feet in length and which when hit properly immediately returns the practice ball toward the user for re-hitting.... | 02/04/1997 |
| 5595546 | Golf putting aid A golf putting aid comprising first and second golf balls connected together in an abutting relationship by a threaded connector that extends into holes formed in the first and second golf balls. The first golf ball includes a center formed by a thin wall... | 01/21/1997 |
| 5564707 | Golf ball including alignment markings A golf ball and method include providing a number of indicators for properly aligning a golf ball, a golfer and a golf club relative to an intended path of travel. The indicators include a ball-travel indicator for alignment with the intended path, a ball... | 10/15/1996 |
| 5549302 | Athletic projectile and target training device A device for allowing an athlete to practice various methods of propelling a projectile in a controlled and accurate manner by allowing him/her to place the projectile on a specific location on a target. This device uses hook and loop fastening material o... | 08/27/1996 |
