Golf putter head
An adjustable heel and toe weighted putter head comprising of stand-alone heel and toe weight-carrying portions spaced rearward from the face portion for increased moment of inertia and also transversely spaced apart from each other by the width of a golf ball to therein define an alignment channel. Each weight-carrying portion consists of a through bore parallel to said face portion, a through threaded insert permanently secured in said bore, selectable weight member(s) housed in said insert, and end plug setscrews that book-end and removably secure said weight member(s) to therein provide for selectable total weight and longitudinal positioning of the center of gravity. The integration of the weight system and the alignment system provides for simultaneous tangential target alignment and parallax golfer head alignment. Positive sloped truncated conical projections on the putter face help minimize ball skid, maximize tactile properties, and provide enhanced audio feedback.
This non-provisional patent application is based upon U.S. Provisional Patent Application Ser. No. 60/791,995 filed Apr. 14, 2006 and hereby claims the benefit of the filing date thereof.
BACKGROUND OF THE INVENTIONThe present invention is related to golf equipment and, in particular, to a golf putter head with enhanced weight distribution, selectable weights, movable center of gravity, target and address alignment aids, and ball hitting projections that enhance feel, acoustics and ball anti-skid properties.
Heretofore, golf putter heads with adjustable weight members often included extraneous parts such as spacers, springs, magnets, fillers and the like that immobilized weight members in a single longitudinal bore. Other designs included multiple threaded bores which received selectable weights but did not provide infinite adjustability of the center of gravity. A non-bore design often utilized a channel or a cavity within which resided a sliding securable weight. Yet another design used extruding posts with interchangeable washers. The prior art as disclosed in U.S. Pat. Nos. 1,343,998 to Grant, 2,998,254 to Rains et al, 3,979,122 to Belmont, 4,962,932 to Anderson, 6,015,354 to Ahn, 5,244,210 to Au, and 6,001,024 to Van Alen shows a putter head with a single threaded bore that required spacers and the like to secure the weights. U.S. Pat. Nos. 1,840,924 to Tucker and 4,828,266 to Tunstall show two longitudinal single-opening threaded bores at the extremities that used spacers to immobilize the weight members. U.S. Pat. Nos. 4,213,613 to Nygren and 6,348,014 to Chiu show lateral threaded bores at the heel end and the toe end of the putter head that allow for weight selection but lacked longitudinal heel-toe positioning. U.S. Pat. No. 5,769,737 to Holladay discloses adjustability of a sliding weight housed in a cavity. U.S. Pat. No. 7,074,132 to Finn and publication US2003/0220150 A1 to Takase disclose fixed weight members spaced from the face portion but does not include adjustable weights.
Heretofore, golfer address position aids usually utilized references at two elevations on the putter head. The prior art U.S. Pat. Nos. 6,200,227 to Sery, 6,394,910 to McCarthy, and 5,921,868 to DiMartino disclose golfer head alignment aids that utilize alignment references at two elevations which the eyes align to thereby ensure a repeatable address position. U.S. Pat. No. 5,913,731 to Westerman discloses a ball-width contour alignment channel but the channel lacks the vertical sides necessary for head address alignment, and also said channel is not defined by spaced weight-carrying portions. U.S. Pat. No. 6,692,378 to Shmoldas discloses an alignment channel with vertical sides but the channel is also not defined by stand-alone spaced weight-carrying portions.
Heretofore, alignment aids that indicate a golf ball such as disks, circles, arcs and hemispheres are disclosed in U.S. Pat. Nos. 3,343,839 to Borah, 3,708,172 to Rango, 3,779.398 to Hunter, 3,884,477 to Bianco, and 4,688,798 to Pelz all include a visible structural support member when viewed squarely from above. The distracting support member makes it more difficult for the various alignment aids to simulate a freestanding golf ball. A freestanding “virtual” golf ball alignment aid provides for easy alignment of the putter head, ball and target.
Heretofore, putter face markings or face inserts did not include high density positive sloped projections. U.S. Pat. Nos. 6,849,004 to Lindsay, 5,709,616 to Rife, and 5,637,044 to Swash all disclose parallel ridges and/or grooves in different configurations and patterns. Putter face markings with vertical freestanding projections include U.S. Pat. Nos. D411,275 to Bottema, D63,284 to Challis, 4,964,641 to Miesch and 6,257,994 to Antonious wherein the ball-impacting projections are either cylindrical, cubed, rectangular or diamond shaped, but all lack the positive sloped side support structure that is essential for the making of small projections for a high dots per inch pattern. U.S. Pat. No. 6,007,434 to Baker discloses an insert that is comprised of mechanically made truncated pyramid shaped projections of low dots per inch; U.S. Pat. No. 4,964,641 to Miesch discloses large 0.040″ on center pyramids, and U.S. Pat. No. 6,089,993 to Woodward discloses cylindrical projections.
BRIEF SUMMARY OF THE INVENTIONIt is the objects of the present invention to provide an improved golf putter that provides for forgiveness on miss hits, provides for a simple system to select and adjust weight members, provides references for target and golfer address alignment, and provides for an enhancement in feel and golfer confidence. Accordingly, the objective of a more forgiving putter entails a greater moment of inertia and that is accomplished by dense heel and toe weight members spaced rearward from the face portion. The objective to provide a simple adjustable weight system is accomplished by having selectable dense weight members housed in a chamber movably securable with end plug setscrews, and without the need for spacers, springs, and fillers. The objective of easy target alignment is accomplished by the stand-alone spaced weight-carrying portions defining a ball-width alignment channel wherein said channel is disposed with parallel markings for tangential alignment with the golf ball, or in an alternate embodiment, alignment is provided by an optically isolated alignment disk that has no visible support member and therein becomes a “virtual” golf ball. The objective of repeatable heel-to-toe, here forth called longitudinal, golfer head alignment is accomplished by the parallax properties of the inboard vertical sides of the alignment channel. Correspondingly, the objective of repeatable target-to-putter head, here forth called lateral, golfer head alignment is accomplished by the visible part line on the surface of the weight-carrying portions wherein said part line is located at the inflexion point defined by a vertical tangent. The objective of enhanced feel is accomplished by the sensing of the spaced weight members by using a thin sole section that connects the face portion to the spaced weight-carrying portions, by the isolated face portion, and by the enhanced audible feedback of a struck ball due to the small dense face projections. The objective of increased confidence is accomplished by the customization of the adjustable weights, easy alignment, and an aesthetically functional putter head.
It should be noted that weight-carrying portion 2a, 2b may be configured in alternate embodiments. For example, a V-shaped configuration or a non-horizontal configuration would be obvious viable variations. The variations and modifications are obviously numerous and are considered to be within the scope of this invention.
The spaced weight-carrying portions 2a, 2b in effect isolate and “lighten” the ball-striking face portion 7 which in turn enhances feel and also results in an enhanced acoustic feedback on a struck ball. Feel is yet further enhanced when the spaced weights are “felt” when the ball is struck. This desired feedback is accomplished by a uniformly thin heel-toe sole section, generally from 0.032 to 0.094 inches, that connects the weight-carrying portions 2a, 2b to the rear surface 14 of said face portion 7, and with said thin sole section provided by seamlessly merging the tapered weight-carrying portions 2a, 2b to the top surface of said sole.
The golfer can customize the total weight of the putter head by selecting quantifiable weight members, house said weight members in said inserts, bookend said weight members with said end plug setscrews, and tighten said end plug setscrews against each other for an immovable weight assembly. Note that spacers, springs, fillers and the like are not necessary to immobilize the weights. The golfer can also adjust the heel-toe, here forth called longitudinal, center of gravity by biasing the weight members toward the heel end or the toe end of the putter head, or in any combination thereof, and securing the selected positions with said end plug setscrews. The weight assembly's flexibility allows adjustments to compensate for tendencies to push or pull putts, type of grass, green condition and layout, weather, and putting idiosyncrasies of the golfer.
The arcuate surfaces 15a, 15b which define the shape of the weight-carrying portions 2a, 2b is delimited by lateral sides 12a, 12aa and 12b, 12bb, respectively, and can each be defined as an arcuate extension of the heel-end toe-end rear edges of sole 9 rearwardly and upwardly to an apex on a circular-disposed arc, and arcuately downwardly and frontwardly to inflexion points 36a, 36b wherein a vertical tangent exists and a part line is created, and extends downwardly and frontwardly to seamlessly merge with the top surface of sole 9. The said circular-disposed apex-carrying section of the weight-carrying portions 2a, 2b provides for maximum weight capacity, or volumetric efficiency, by housing concentrically referenced cylindrical weight elements 4a, 4b, 10a, 10b, 10aa, 10bb, et al.
The rear open end 16 of the alignment channel 13 has a height less than half that of a golf ball to therein also function as a cup-like ball picker. A sweep of the putter head through the ball will pick up and cradle the ball between the channel's vertical walls, the rear surface of the face portion, and the arcuate bottom surface of the channel.
The putter head body is preferably composed of investment cast aluminum and its surface anodized. The permanently secured threaded inserts 4a, 4b are preferably composed of brass and also functions as an embedded dense weight member. The alignment lines are preferably colored white. The selectable weight members are preferably tungsten cylinders and disks and the end plugs preferably stainless steel setscrews. Total weight of the putter head is preferably from 320 to 375 grams. The one-piece putter head of
The invention is not limited to the embodiments hereinbefore described which may be varied in construction and detail, as numerous modifications and adaptations of this invention will be apparent to others skilled in the art. Therefore, the claims are intended to cover such modifications and adaptations as they are considered to be within the scope of this invention.
Claims
1. A heel-toe weighted golf putter head comprising of: a face portion to hit the ball; a sole portion extending rearward from the face portion; a shaft connected to the putter head; the improvements hereon comprising of: a stand-alone heel end weight-carrying portion spaced rearward from the rear surface of said face portion; a stand-alone toe end weight-carrying portion spaced rearward from the rear surface of said face portion wherein said spaced weight-carrying portions increase the putter head's moment of inertia and also enhance feel; said spaced weight-carrying portions integral to said sole portion; said spaced weight-carrying portions each includes a surface that is delimited by an inboard end side and an outboard end side wherein said inboard end sides are generally perpendicular to said face portion; said inboard end sides transversely spaced apart from each other from 0.5 inches to 3.5 inches, and most advantageously, transversely spaced apart from each other by the diameter of a golf ball to therein define a ball-width alignment channel perpendicular to said face portion; said spaced weight-carrying portions each includes an adjustable weight assembly comprising of: a through bore through said spaced weight-carrying portions; said through bore includes through threads threaded most advantageously by a permanently secured through threaded insert; said threaded insert receives a singular or a plurality of weight member(s) that further increases the moment of inertia of the putter head; said threaded insert receives in a threaded engagement two end plug setscrews that book-end said weight member(s) to therein provide a movably securable weight assembly adjustable in total weight and center of gravity.
2. The golf putter head according to claim 1 wherein said spaced weight-carrying portions each consists of an arcuate surface delimited by said inboard and outboard end sides; said arcuate surface defined as an extension of the sole at the heel section and the toe section extending arcuately rearwardly and upwardly to a circular-disposed apex-carrying arc and arcuately downwardly and generally taper frontwardly to seamlessly merge with the top surface of said sole; said defined arcuate weight-carrying portions generally longitudinally elongated and parallel to said face portion; said inboard end sides generally non-integral to the rear surface of said front portion; said alignment channel defined by said inboard end sides includes a generally arcuate bottom surface extending the length of said inboard end sides; said inboard end sides generally vertical; said arcuate bottom surface includes alignment lines adjacent to said inboard end sides; and therein define stand-alone teardrop-like shaped weight-carrying portions with integral alignment properties and a volumetrically efficient shape that receives shape conforming weight members.
3. The golf putter head according to claim 2 wherein said spaced weight-carrying portions each includes a through bore parallel to said face portion; said through bores perpendicular through said inboard end sides; and said through bores coaxially-aligned with each other.
4. The golf putter head according to claim 2 wherein said arcuate surfaces of said weight-carrying portions frontward of its apex include a vertical tangent that defines an inflexion point; said inflexion point defines a visible part line when viewed squarely from above, and said part line is the reference line for lateral golfer head alignment along the target-to-putter axis.
5. The golf putter head according to claim 2 wherein said arcuate surfaces of said weight-carrying portions frontward of its apex include at least one inflexion point without a vertical tangent.
6. The golf putter head according to claim 2 wherein said arcuate surfaces of said weight-carrying portions frontward of its apex include at least two vertical tangents and at least one inflexion point.
7. The golf putter head according to claim 2 wherein said arcuate surfaces of said weight-carrying portions frontward of its apex do not include a convex-to-concave inflexion point.
8. The golf putter head according to claim 1 wherein said inboard end sides of said spaced weight-carrying portions are integral to said rear surface of said face portion.
9. A heel-toe weighted golf putter head comprising of: a face portion to hit the ball; a sole portion extending rearward from the face portion; a shaft connected to the putter head; the improvements hereon comprising of: a stand-alone heel end weight-carrying portion spaced rearward from the rear surface of said face portion; a stand-alone toe end weight-carrying portion spaced rearward from the rear surface of said face portion wherein said spaced weight-carrying portions increase the putter head's moment of inertia and also enhance feel; said spaced weight-carrying portions integral to said sole portion; said spaced weight-carrying portions each includes a surface that is delimited by an inboard end side and an outboard end side wherein said inboard end sides are generally perpendicular to said face portion; said inboard end sides transversely spaced apart from each other from 0.5 inches to 3.5 inches, and most advantageously, transversely spaced apart from each other by the diameter of a golf ball to therein define a ball-width alignment channel perpendicular to said face portion; said spaced weight-carrying portions each includes a fixed weight assembly consisting of generally a bore that receives a permanently secured cylindrical weight member.
10. The golf putter head according to claim 9 wherein a fixed weight system consists solely of the spaced weight-carrying portions.
11. The putter head according to claim 1 wherein said alignment channel is comprised of a generally flat bottom surface.
12. The putter head according to claim 1 wherein said weight system is comprised of weight-carrying portions each with a single-opening threaded bore.
13. The putter head according to claim 1 wherein said putter head includes an optically isolated ball-width alignment disk supported by a non-visible support member when viewed squarely from above; said support member comprised of an extension of the central rear edge of said sole; said extension extends rearwardly and upwardly to a height generally equal to the top surface of said face portion; said support member extends horizontally frontward towards said face portion while simultaneously transitioning into said optically isolated ball-width alignment disk; and said disk includes a visible thickness that provides parallax properties for longitudinal and lateral golfer head alignment.
14. The golf putter head according to claim two wherein the putter head functions as a cup-like ball picker comprising of the vertical walls of an alignment channel, the rear surface of the face portion, the channel's arcuate bottom, and the open ball-entering end of the channel whose height is less than half the diameter of a golf ball.
15. A golf putter head comprising of: a face portion to hit the ball; a sole portion extending rearward from the face portion; a shaft connected to the putter head; the improvement hereon comprising of said face portion disposed with ball-hitting truncated generally conical projections; said projections each includes a positive sloped support side(s) that structurally strengthens said projections to therein encourage substantially smaller projections for a substantially higher density of projections; said positive sloped projections include truncated circular cones, truncated elliptical cones, or truncated polygonal cones; and said positive sloped projections, hereon called dots, comprise a dot pattern wherein said dot pattern is generally defined by the graphic standard dot screens of lines per inch and density percentage, or equivalently, percent of area covered by said dots; and said dots include properties of size, shape, slope, floor, hardness, and acoustics.
16. A golf putter head according to claim 14 wherein said dot pattern consists of dot lines from 15 lines per inch to 85 lines per inch and a density percentage from 10% to 50%, and most advantageously, said dot pattern consists of 30 lines per inch at 30% density.
Type: Application
Filed: Apr 6, 2007
Publication Date: Oct 18, 2007
Inventors: Michael Takeshi Inouye (Honolulu, HI), Mitsuko Nakaema Inouye (Honolulu, HI), Christie Mariko Inouye (Honolulu, HI)
Application Number: 11/697,598
International Classification: A63B 69/36 (20060101); A63B 53/00 (20060101);