# US 7,607,991 B2 · Golf putter and putter head > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,607,991 B2 - Document ID: US7607991B2 - Status: Granted - Kind: B2 - Application number: 10/998,909 - Filed: 2004-11-29 - Published: 2006-06-01 - Granted: 2009-10-27 - Earliest claimed: 2004-11-29 - Assignees: Momentus Golf - Inventors: James W. Sorenson - Web page: https://patentgrep.com/patent/US7607991B2 ## CPC - A63B 53/02: Joint structures between the head and the shaft - A63B 53/0487: {for putters (A63B53/065 takes precedence)} - A63B 60/00: Details or accessories of golf clubs, bats, rackets or the like - A63B 53/0408: {characterised by specific dimensions, e.g. thickness} - A63B 53/0433: {with special sole configurations} - A63B 53/0441: {with visual indicators for aligning the golf club} - A63B 53/0462: {characterised by tapering thickness of the impact face plate} - A63B 60/50: with through-holes (A63B60/18 takes precedence; for stringing purposes A63B49/00) - A63B 2053/0491: {with added weights, e.g. changeable, replaceable} - A63B 2071/0625: {Emitting sound, noise or music} - A63B: APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT (apparatus for passive exercising, massage A61H) ## Abstract A putter club head has a longitudinal body and a means of attaching a shaft thereto. The body may be solid, hollow, or partially hollow or solid. If hollow or partially hollow, the body may have a weighted mass therein. Such a weighted mass may be located towards a front section of the club head near a ball striking surface. The means to attach a shaft is located in the rear section of said body in proximity to the distal end of the rear section of said body. The shaft may curve and bend so that it is oriented near the center of the body and towards a golfer addressing a golf ball. ## Claims ### Claim 1 A golf putter comprising: a shaft; a substantially hollow, longitudinal body, said body comprising a front segment, a rear segment, and a horizontal axis; means for receiving said shaft, said means located at an end of said rear segment distal from said front segment; a ball striking surface attached to said front segment; and a weighted mass within said body; wherein a portion of said shaft in proximity to said means for receiving said shaft leans toward said front segment; and further wherein said shaft comprises a first bend directing said shaft towards an axis perpendicular to said horizontal axis and towards a lateral side of said body. ### Claim 2 (depends on 1) The golf putter according to claim 1, wherein said weighted mass is positioned between said means for receiving said shaft and said ball striking surface. ### Claim 3 (depends on 2) The golf putter according to claim 2, wherein said weighted mass is positioned adjacent to said ball striking surface. ### Claim 4 (depends on 2) The golf putter according to claim 2, wherein said weighted mass comprises approximately 1% to 10% of said body by length. ### Claim 5 (depends on 2) The golf putter according to claim 2, wherein said weighted mass comprises approximately 11% to 25% of said body by length. ### Claim 6 (depends on 2) The golf putter according to claim 2, wherein said weighted mass comprises approximately 26% to 50% of said body by length. ### Claim 7 (depends on 2) The golf putter according to claim 2, wherein said weighted mass comprises approximately 51% to 75% of said body by length. ### Claim 8 (depends on 2) The golf putter according to claim 2, wherein said weighted mass comprises approximately 76% to 100% of said body by length. ### Claim 9 (depends on 1) The golf putter according to claim 1, wherein said means for receiving said shaft is positioned at a distance from said distal end of said rear segment, said distance approximately equal to 5% to 20% of the length of said body. ### Claim 10 (depends on 1) The golf putter according to claim 1, wherein said means for receiving said shaft is at least partially within approximately 1 cm to 3 cm of said distal end of said rear segment. ### Claim 11 (depends on 1) The golf putter according to claim 1, wherein said means for receiving said shaft comprises a hole and a passageway. ### Claim 12 (depends on 1) The golf putter according to claim 1, wherein said body is substantially oval at a cross section perpendicular to the horizontal axis. ### Claim 13 (depends on 12) The golf putter according to claim 12, wherein said body lies substantially flat on a surface. ### Claim 14 (depends on 1) The golf putter according to claim 1, wherein said means for receiving said shaft is substantially perpendicular to said horizontal axis of said body; wherein said first bend is proximate to said means for receiving said shaft and causes said shaft to lean towards said ball striking surface; and further wherein said shaft comprises a second bend, said second bend orienting said shaft perpendicularly to said horizontal axis, and said second bend further causing said shaft to lean towards a lateral side of said body. ### Claim 15 (depends on 1) The golf putter according to claim 1, wherein said first bend substantially centers said shaft over said body. ### Claim 16 (depends on 1) The golf putter according to claim 1, wherein said first bend forms an angle of approximately 60 degrees with said horizontal axis. ### Claim 17 (depends on 1) The golf putter according to claim 1, wherein said means for receiving a shaft forms an angle of approximately 90 degrees with said horizontal axis, and further wherein said shaft comprises a first bend directing said shaft towards said front segment of said body, and further wherein said shaft comprises a second bend, said second bend directing said shaft towards a perpendicular with said horizontal axis and directing said shaft towards a lateral side of said body. ### Claim 18 (depends on 14) The golf putter according to claim 14, wherein said first bend forms an angle of approximately 60 degrees with said horizontal axis, and said second bend forms an angle of approximately 30 degrees with said horizontal axis. ### Claim 19 A putter club head comprising: a substantially hollow, longitudinal body, said body comprising a front segment, a rear segment, and a horizontal axis; means for receiving a shaft, said means located in proximity to said rear segment; a ball striking surface located in proximity to said front segment; and a weighted mass within said body. ### Claim 20 (depends on 19) The putter club head according to claim 19, wherein said weighted mass is located adjacent to said ball striking surface. ### Claim 21 (depends on 19) The putter club head according to claim 19, wherein said weighted mass comprises approximately 76% to 100% of said body by length. ### Claim 22 (depends on 19) The putter club head according to claim 19, wherein said weighted mass comprises approximately 51% to 75% of said body by length. ### Claim 23 (depends on 19) The putter club head according to claim 19, wherein said weighted mass comprises approximately 26% to 50% of said body by length. ### Claim 24 (depends on 19) The putter club head according to claim 19, wherein said weighted mass comprises approximately 11% to 25% of said body by length. ### Claim 25 (depends on 19) The putter club head according to claim 19, wherein said weighted mass comprises approximately 1% to 10% of said body by length. ### Claim 26 (depends on 19) The putter club head according to claim 19, wherein said weighted mass comprises one or more plates, and further wherein said one or more plates are removable from said putter head. ### Claim 27 (depends on 19) The putter club head according to claim 19, wherein said body is approximately 9.5 cm in length, and further wherein said weighted mass ranges from approximately 0.5 cm in length to substantially the entire length of said longitudinal body. ### Claim 28 (depends on 19) The putter club head according to claim 19, wherein said body is approximately 8.6 cm in length, and further wherein said weighted mass ranges from approximately 0.2 cm in length to substantially the entire length of said longitudinal body. ### Claim 29 (depends on 19) The putter club head according to claim 19, wherein said means for receiving a shaft forms an angle of approximately 60 degrees with said horizontal axis. ### Claim 30 (depends on 19) The putter club head according to claim 19, wherein said means for receiving a shaft forms an angle of approximately 90 degrees with said horizontal axis. ### Claim 31 (depends on 19) The putter club head according to claim 19, wherein said body is substantially oval at a cross section perpendicular to the horizontal axis. ### Claim 32 (depends on 19) The putter club head according to claim 19, wherein said body lies substantially flat on a surface. ### Claim 33 (depends on 19) The putter club head according to claim 19, wherein said means for receiving said shaft is at least partially within approximately 1 cm to 3 cm of an end of said rear segment distal from said front segment. ### Claim 34 A golf putter comprising: a shaft; a substantially hollow, longitudinal body, said body comprising a front segment, a rear segment, and a horizontal axis; a hole in said body for receiving said shaft, said hole located in proximity to said rear segment; a ball striking surface located in proximity to said front segment; and a weighted mass within said front segment adjacent to said striking surface; wherein said shaft proximate to said hole forms an angle with said body such that said shaft proximate to said hole leans toward said front segment; wherein said body is substantially oval at a cross section perpendicular to the horizontal axis; and wherein a bend in said shaft orients said shaft perpendicularly to said horizontal axis of said body and towards a lateral side of said body; and further wherein said weighted mass comprises approximately 25% to 35% of said body by length.