公开(公告)号：US20220366875A1

公开(公告)日：2022-11-17

申请号：US17807652

申请日：2022-06-17

申请人： Timothy Jenson

发明人： Timothy Jenson

IPC分类号： G10C3/106 ,  G10C3/04

摘要： A piano tuning retention system includes first and second bushings, each having a threaded upper longitudinal end and a lower longitudinal end that defines a polygonal interior for mating with a polygonal end of a respective piano tuning pin, first and second threaded fasteners corresponding to the threaded upper longitudinal ends of the bushings, first and second sleeves that fit over the bushings, each of the sleeves having an upper longitudinal end with an inward radial extension that defines a reduced inner diameter and a lower longitudinal end that defines a catch (e.g. a notch) extending in a circumferential direction of the sleeve for engagement with a piano string, and a bridge configured to be sandwiched between the threaded fasteners and the inward radial extensions of the sleeves with the bushings disposed within the sleeves and the threaded fasteners fastened to the threaded upper longitudinal ends of the bushings.

公开(公告)号：US11651753B2

公开(公告)日：2023-05-16

申请号：US17807652

申请日：2022-06-17

申请人： Timothy Jenson

发明人： Timothy Jenson

IPC分类号： G10C3/106 ,  G10C3/04

CPC分类号： G10C3/106 ,  G10C3/04

摘要： A piano tuning retention system includes first and second bushings, each having a threaded upper longitudinal end and a lower longitudinal end that defines a polygonal interior for mating with a polygonal end of a respective piano tuning pin, first and second threaded fasteners corresponding to the threaded upper longitudinal ends of the bushings, first and second sleeves that fit over the bushings, each of the sleeves having an upper longitudinal end with an inward radial extension that defines a reduced inner diameter and a lower longitudinal end that defines a catch (e.g. a notch) extending in a circumferential direction of the sleeve for engagement with a piano string, and a bridge configured to be sandwiched between the threaded fasteners and the inward radial extensions of the sleeves with the bushings disposed within the sleeves and the threaded fasteners fastened to the threaded upper longitudinal ends of the bushings.

公开(公告)号：US11380289B1

公开(公告)日：2022-07-05

申请号：US17319992

申请日：2021-05-13

申请人： Timothy Jenson

发明人： Timothy Jenson

IPC分类号： G10C3/106 ,  G10C3/04

摘要： A piano tuning retention system includes first and second bushings, each having a threaded upper longitudinal end and a lower longitudinal end that defines a polygonal interior for mating with a polygonal end of a respective piano tuning pin, first and second threaded fasteners corresponding to the threaded upper longitudinal ends of the bushings, first and second sleeves that fit over the bushings, each of the sleeves having an upper longitudinal end with an inward radial extension that defines a reduced inner diameter and a lower longitudinal end that defines a catch (e.g. a notch) extending in a circumferential direction of the sleeve for engagement with a piano string, and a bridge configured to be sandwiched between the threaded fasteners and the inward radial extensions of the sleeves with the bushings disposed within the sleeves and the threaded fasteners fastened to the threaded upper longitudinal ends of the bushings.