Back to results
US 8,950,281 B2Granted
Worm-gear assembly having a pin raceway
AssigneeSpinControl Gearing LLC
InventorsEric D. Carrier, David O. Carrier
Life of this patent
Estimating the term…
Abstract
A worm-gear assembly including a worm screw having at least one groove and a wheel having a plurality of rotatable pins along its periphery for engaging the worm screw. The pins are able to rotate in a direction other than a direction of wheel rotation. At least one raceway is provided for contacting pins that are not engaged with the worm screw during operation of the assembly.
Claims11
A worm-gear assembly, comprising:
- a worm screw having at least one groove;
- a wheel having a plurality of rotatable pins along its periphery for engaging the worm screw, the pins being able to rotate in a direction other than a direction of wheel rotation;
- and
- two raceways positioned at opposite sides of the worm wheel and being operable to respectively engage opposing sides of a number of the pins that are not engaged with the worm screw during operation of the assembly, each raceway not engaging any pin that is engaged with the worm screw.
1 more element
A worm-gear assembly, comprising:
- a worm screw having at least one groove;
- a wheel having a plurality of rotatable pins along its periphery for engaging the worm screw, the pins being able to rotate in a direction other than a direction of wheel rotation;
- two raceways positioned at opposite sides of the worm wheel and being operable to respectively engage opposing sides of a number of the pins that are not engaged with the worm screw during operation of the assembly, wherein one of the raceways is movable;
- and
- a shifting mechanism for moving the movable raceway,
- wherein the movable raceway is movable to at least one position in which the movable raceway engages a number of the pins that are not engaged with the worm screw during operation of the assembly, and is movable to at least one other position in which the movable raceway does not engage the pins.
3 more elements
A worm-gear assembly, comprising:
- a worm screw having at least one groove;
- a wheel having a plurality of rotatable pins along its periphery for engaging the worm screw, the pins being able to rotate in a direction other than a direction of wheel rotation;
- and
- two raceways positioned at opposite sides of the worm wheel and being operable to respectively engage opposing sides of a number of the pins that are not engaged with the worm screw during operation of the assembly, wherein both of the raceways are movable.
1 more element
Dependencies are inferred from the claim text.