US 11,666,811 B2
Swing measuring attachment, and swing measuring apparatus
Atsushi Kondo, Azumino (JP); and Takeshi Fujishiro, Shiojiri (JP)
Assigned to SEIKO EPSON CORPORATION
Filed by Seiko Epson Corporation, Toyko (JP)
Filed on Mar. 24, 2021, as Appl. No. 17/210,558.
Claims priority of application No. JP2020-053838 (JP), filed on Mar. 25, 2020.
Prior Publication US 2021/0299531 A1, Sep. 30, 2021
Int. Cl. A63B 60/46 (2015.01); G01P 13/00 (2006.01); A63B 60/16 (2015.01); A63B 53/14 (2015.01)
CPC A63B 60/46 (2015.10) [A63B 60/16 (2015.10); G01P 13/00 (2013.01); A63B 53/14 (2013.01); A63B 2220/803 (2013.01); A63B 2220/833 (2013.01); A63B 2225/50 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A swing measuring attachment, comprising:
a base portion having a planar base and a skirt that extends outward from the planar base; and
an axially extending protrusion protruding from the base portion,
wherein the skirt extends outward from the planar base in a direction parallel with the axially extending protrusion,
the skirt includes an annular base surface at a terminal end thereof located distal from the planar base, the annular surface being parallel with the planar base,
the annular surface including a plurality of wedge-shaped sliding portions formed thereon,
the axially extending protrusion includes a threaded section that is provided with a screw thread,
a projection having no screw thread is provided at a terminal end of the protrusion that is distal from the base portion, and
a cylindrical section is positioned between the threaded section and the projection, the cylindrical section including a smooth outer surface that extends in parallel with an axis defined by the axially-extending protrusion.