Core chuck with resilient rollers
AssigneeDouble-E Inc.
InventorRobert D. Keith
Life of this patent
Estimating the term…
Abstract
A torque-transmitting chuck comprising an interior member having a longitudinal axis and exterior circumferentially-spaced, longitudinally-extending camming surfaces. A generally axially-extending, circular in cross-section roller engages each of the camming surfaces. Each roller is arranged to engage the interior of a hollow core and move radially outwardly relative to the interior member in response to movement of the roller circumferentially of the interior member. The chuck is characterized in that each of the rollers includes an axially-extending center rod and a thick surrounding layer of resilient material the outer circumferential surface of which contacts the camming surfaces and core. The layer has a hardness in the range of 30 to 90 durometer and a radial thickness of not less than about 1/8 inch.
Claims16
A torque-transmitting chuck comprising
- an interior member having a longitudinal axis and a plurality of exterior circumferentially-spaced, longitudinally-extending camming surfaces, and,
- a plurality of generally axially-extending, circular in cross-section rollers each of which engages one of said camming surfaces,
- said rollers being arranged to engage the interior of a hollow core into which said chuck may be inserted and to move radially outwardly relative to the interior member and into engagement with the interior of said core in response to movement of said rollers circumferentially relative to said interior member,
- said chuck being characterized in that each of said rollers includes a center rod extending axially the length of said roller and an axially-extending annular layer of elastomeric material circumferentially surrounding said rod and defining the surface of said roller that engages a said camming surface and is arranged to engage the interior of said core,
- said layer having a hardness of not less than in the range of about 30 to about 90 durometer and a radial thickness of not less than about 1/8 inch.
A torque-transmitting chuck comprising
- an interior member having a longitudinal axis and a plurality of exterior circumferentially-spaced, longitudinally-extending camming surfaces, and,
- a plurality of generally axially-extending, circular in cross-section rollers each of which engages one of said camming surfaces,
- said rollers being arranged to engage the interior of a hollow core into which said chuck may be inserted and to move radially outwardly relative to the interior member and into engagement with the interior of said core in response to movement of said rollers circumferentially relative to said interior member,
- said chuck being characterized in that each of said rollers includes a center rod extending axially the length of said roller and an axially-extending annular layer of elastomeric material circumferentially surrounding said rod and defining the surface of said roller that engages a said camming surface and is arranged to engage the interior of said core,
- whereby said layer will deform when said roller is pressed into engagement with a surrounding core and thereby substantially prevent slippage of said roller relative to said core.
Dependencies are inferred from the claim text.