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US 2011/0085876 A1Published application
Quick release nut
AssigneeZimmer, Inc.
InventorTerry W. Wagner
Life of this patent
Estimating the term…
Abstract
A fastener is provided that may be readily threadingly engaged with and/or disengaged from a threaded shaft without the need to threadingly advance the fastener along substantially the entire length of the threaded shaft. In one exemplary embodiment, a quick release nut is provided that includes an upper body portion and a lower body portion that are rotatably connected to one another. Each of the upper body portion and the lower body portion include central apertures extending therethrough with the walls defining the central apertures of the upper and lower body portions being at least partially threaded.
Claims20
A quick release nut comprising:
- a lower body having a lower body top surface, a lower body bottom surface, and a lower body aperture defined by a wall extending between said lower body top surface and said lower body bottom surface, said wall extending 360 degrees about an axis extending through said lower body aperture between said lower body top surface and said lower body bottom surface, at least a portion of said wall defining said lower body aperture having lower body threads;
- an upper body having an upper body top surface, an upper body bottom surface, and an upper body aperture defined by a wall extending between said upper body top surface and said upper body bottom surface, said wall extending 360 degrees about an axis extending through said upper body aperture between said upper body top surface and said upper body bottom surface, at least a portion of said wall defining said upper body aperture having upper body threads, said lower body top surface positioned adjacent said upper body bottom surface, at least one of said lower body and said upper body moveable relative to the other of said lower body and said upper body;
- and
- wherein said lower body aperture and said upper body aperture are positionable to cooperatively define a throughbore extending from said upper body top surface to said lower body bottom surface, said lower body aperture and said upper body aperture positionable in a first, substantially aligned position in which said throughbore has a first diameter and a second, substantially misaligned position in which said throughbore has a second diameter, said first diameter being greater than said second diameter.
1 more element
A quick release nut configured for threaded engagement with a connector having a threaded shaft, the threaded shaft of the connector having a major diameter, the nut comprising:
- a lower body having a lower body top surface, a lower body bottom surface, and a lower body aperture defined by a wall extending between said lower body top surface and said lower body bottom surface, said wall extending 360 degrees about an axis extending through said lower body aperture between said lower body top surface and said lower body bottom surface, at least a portion of said wall defining said lower body aperture having lower body threads;
- an upper body having an upper body top surface, an upper body bottom surface, and an upper body aperture defined by a wall extending between said upper body top surface and said upper body bottom surface, said wall extending 360 degrees about an axis extending through said upper body aperture between said upper body top surface and said upper body bottom surface, at least a portion of said wall defining said upper body aperture having upper body threads, said lower body top surface positioned adjacent said upper body bottom surface, at least one of said lower body and said upper body being moveable relative to the other of said lower body and said upper body;
- and
- actuation means for actuating said lower body and said upper body between a first position in which said lower body aperture and said upper body aperture cooperate to define a throughbore extending from said upper body top surface to said lower body bottom surface having a first diameter greater than the major diameter of the threaded shaft of the connector and a second position in which said lower body aperture and said upper body aperture cooperate to define a throughbore extending from said upper body top surface to said lower body bottom surface having a second diameter no greater than the major diameter of the threaded shaft of the connector.
1 more element
A quick release nut configured for threaded engagement with a connector having a threaded shaft, the threaded shaft of the connector having a major diameter, the nut comprising:
- a lower body having a lower body top surface, a lower body bottom surface, a biasing wall defining an arcuate cutout, and a lower body central aperture defined by a wall extending 360 degrees between said lower body top surface and said lower body bottom surface, said lower body central aperture extending through a mid-portion of said lower body, at least a portion of said wall defining said lower body central aperture having lower body threads, said lower body threads extending no more than 180 degrees around said lower body central aperture;
- an upper body having an upper body top surface, an upper body bottom surface, a biasing wall defining an arcuate cutout, and an upper body central aperture defined by a wall extending 360 degrees between said upper body top surface and said upper body bottom surface, at least a portion of said wall defining said upper body central aperture having upper body threads, said upper body threads extending no more than 180 degrees around said upper body central aperture;
- a connecting bar extending between said upper body and said lower body, said connecting bar securing said upper body and said lower body to one another, said connecting bar being rotatably connected to at least one of said upper body and said lower body, wherein said lower body top surface is positioned directly adjacent said upper body bottom surface;
- a torsion spring extending around and positioned on said connecting bar, said torsion spring having a first end and a second end, said first end of said torsion spring contacting said biasing wall of said upper body and said second end of said torsion spring contacting said biasing wall of said lower body, wherein said first end and said second end of said torsion spring exert a biasing force on said lower body and said upper body to rotate said lower body and said upper body from a first position in which said lower body aperture and said upper body aperture cooperate to define a throughbore extending from said upper body top surface to said lower body bottom surface having a first diameter greater than the major diameter of the threaded shaft of the connector and a second position in which said lower body aperture and said upper body aperture cooperate to define a throughbore extending from said upper body top surface to said lower body bottom surface having a second diameter no greater than the major diameter of the threaded shaft of the connector;
- and
- wherein said lower body and said upper body rotate relative to one another about an axis of rotation, said axis of rotation being eccentric to a throughbore axis extending through the center of said throughbore defined by said upper body aperture and said lower body aperture in said second position.
3 more elements
Dependencies are inferred from the claim text.