Cone roller lock device
AssigneeReell Precision Manufacturing Corporation
InventorsAllan Triebold, John Nutter, George D Larson
Life of this patent
Estimating the term…
Abstract
A roller lock device has a shaft and a housing configured over the shaft for selective relative movement thereto. A plurality of rollers is configured between the housing and the shaft, at least some of which are substantially conically shaped. A cage is configured between the housing and the shaft and adjacent the rollers such that the rollers are at least partially constrained from movement by the cage. A control is configured to move the rollers axially thereby engaging and disengaging the roller lock. The housing has ramps configured to receive the rollers, the ramps having a curved contour.
Claims18
A roller lock device comprising:
- a shaft configured for moving axially along a shaft axis;
- a housing configured over the shaft for selective relative movement thereto, the shaft configured to move linearly through the housing;
- a plurality of rollers configured between the housing and the shaft and in contact with the shaft, at least some of which are substantially conically shaped and each of which are configured to rotate about a roller axis, which extends a length of each roller and general perpendicular to the shaft axis;
- a cage configured between the housing and the shaft and adjacent each of the plurality of rollers such that the rollers are at least partially constrained from movement by the cage;
- a control configured to move the cage such that the cage in turn moves each of the plurality of rollers in a direction parallel along each roller axis;
- and
- wherein the housing comprises ramps configured to receive the rollers, the ramps comprising a curved contour.
A roller lock device comprising:
- a shaft configured for moving axially along a shaft axis;
- a housing configured over the shaft for selective relative movement thereto, the shaft configured to move linearly through the housing;
- a plurality of rollers configured between the housing and the shaft and in contact with the shaft, at least some of which are substantially conically shaped, and each of which are configured to rotate about a roller axis that is substantially perpendicular to the shaft axis;
- a cage configured between the housing and the shaft and adjacent the rollers such that the rollers are at least partially constrained from movement by the cage;
- and
- a control configured to move the rollers axially relative to the shaft;
- wherein relative movement of the cage and rollers alternatively locks the roller lock device into a locked state where relative movement between the shaft and the housing is prevented, and unlocks the roller lock device into an unlocked state where relative movement between the shaft and the housing is allowed, the shaft is configured to move linearly along the shaft axis through the housing when the roller lock is in the unlocked state;
- and
- wherein the housing comprises ramps configured to receive the rollers, the ramps comprising a curved contour wherein the ramps are symmetrical about each roller axis such that the roller lock device is bi-directional such that it can alternate between locked and unlocked states when the shaft is moved in either direction along the shaft axis.
Dependencies are inferred from the claim text.