US 12,274,927 B2
Adjustable length shaft and an adjustable mass for a golf club
Travis D. Milleman, Phoenix, AZ (US); Anthony D. Serrano, Phoenix, AZ (US); Eric V. Cole, Phoenix, AZ (US); David S. Kultala, Phoenix, AZ (US); David L. Petersen, Peoria, AZ (US); Les J. Bryant, Peoria, AZ (US); Richard D. MacMillan, Glendale, AZ (US); Rick Solesbee, Phoenix, AZ (US); John A. Solheim, Phoenix, AZ (US); and Evan R. Greer, Phoenix, AZ (US)
Assigned to Karsten Manufacturing Corporation, Phoenix, AZ (US)
Filed by KARSTEN MANUFACTURING CORPORATION, Phoenix, AZ (US)
Filed on Dec. 20, 2023, as Appl. No. 18/391,404.
Application 18/391,404 is a continuation of application No. 17/652,061, filed on Feb. 22, 2022, granted, now 11,850,486.
Application 17/652,061 is a continuation of application No. 16/539,890, filed on Aug. 13, 2019, granted, now 11,278,780, issued on Mar. 22, 2022.
Application 16/539,890 is a continuation in part of application No. 15/165,889, filed on May 26, 2016, granted, now 10,675,521, issued on Jun. 9, 2020.
Claims priority of provisional application 62/718,298, filed on Aug. 13, 2018.
Claims priority of provisional application 62/303,429, filed on Mar. 4, 2016.
Claims priority of provisional application 62/258,837, filed on Nov. 23, 2015.
Claims priority of provisional application 62/220,013, filed on Sep. 17, 2015.
Claims priority of provisional application 62/167,833, filed on May 28, 2015.
Prior Publication US 2024/0123307 A1, Apr. 18, 2024
Int. Cl. A63B 60/28 (2015.01); A63B 53/00 (2015.01); A63B 53/04 (2015.01); A63B 53/08 (2015.01); B25B 23/14 (2006.01); B25B 23/142 (2006.01)
CPC A63B 60/28 (2015.10) [A63B 53/08 (2013.01); A63B 53/007 (2013.01); A63B 53/0466 (2013.01); A63B 53/047 (2013.01); A63B 2053/0479 (2013.01); A63B 2225/09 (2013.01); B25B 23/141 (2013.01); B25B 23/1427 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A golf club comprising:
a first shaft having a first end and a second end, wherein the first end of the first shaft is coupled to a club head;
a second shaft configured to slidably engage a portion of the first shaft, the second shaft comprising a butt end;
a grip coupled to the second shaft; and
an adjustable length shaft assembly at least partially positioned within the second shaft and configured to permit a portion of the first shaft to slide in relation to the second shaft, the adjustable length shaft assembly comprising:
a compression assembly further comprising an adjustment member and a retainer;
wherein the adjustment member comprises an adjustment member head portion connected to a shaft portion;
wherein the shaft portion extends away from the adjustment member head portion in the second shaft;
wherein the adjustment member head portion has a head portion diameter greater than a shaft portion diameter;
wherein the retainer comprises a well defining a recess connected to a tubular portion;
wherein the tubular portion extends away from the well into the second shaft;
wherein the tubular portion defines an open end at an end of the tubular portion opposite the well;
wherein the retainer is received by the second shaft through a second end;
wherein the well is attached to the second shaft at the second end;
wherein the retainer does not rotate or move independently of the second shaft, but travels with the second shaft;
wherein the well has a well diameter greater than a tubular portion diameter;
wherein the retainer slidably receives the adjustment member head portion;
wherein the tubular portion slidably receives the shaft portion;
wherein the shaft portion extends through the tubular portion and out the open end;
wherein the tubular portion diameter is complementary to an adjustment member head portion outer diameter allowing the adjustment member to slide in an axial direction parallel to the first and second shafts;
wherein the adjustment member resiliently connected to the retainer by a biasing member connected to the adjustment member head portion;
wherein the biasing member is received in the well.