Back to results
US 5,936,324 AGranted
Moving magnet scanner
AssigneeGenetic Microsystems, Inc.
InventorJean I. Montagu
Life of this patent
Estimating the term…
Abstract
A limited excursion permanent magnet motor in which the permanent magnet, captured between axially loaded bearings, is connected in a space-economizing construction to the output shaft of the motor by a torque-transmitting keyed construction.
Claims10
A limited excursion motor comprising
- a moving permanent magnet rotor, said rotor including a permanent magnet having first and second ends,
- first and second supporting shafts cooperating with said first and second magnet ends, respectively, and
- a stator having a coil in an inter-acting relationship with the rotor,
- wherein at least said first supporting shaft is connected in a cooperating torque-transmitting relationship to said first magnet end by a first protrusion extending from either said first shaft axially into a receiving first aperture in said first magnet end or from said first magnet end into a receiving first aperture in said first shaft, and
- further comprising a first spring axially biasing said first supporting shaft and said first magnet end together.
2 more elements
A high speed permanent magnet scanner in the form of a limited excursion motor comprising
- a moving permanent magnet rotor, said rotor including a permanent magnet having first and second ends,
- first and second supporting shafts cooperating with said first and second magnet ends, respectively, and
- a stator having a coil in an inter-acting relationship with the rotor,
- wherein at least said first supporting shaft is connected in a cooperating torque-transmitting relationship to said first magnet end by a first protrusion extending from either said first shaft axially into a receiving first aperture in said first magnet end or from said first magnet end into a receiving, first aperture in said first shaft, and
- further comprising a first spring axially biasing said first supporting shaft and said first magnet end together.
2 more elements
A limited excursion motor comprising
- a moving permanent magnet rotor, said rotor including a solid imperforate magnet having first and second ends, each of said ends having at least one integral protrusion,
- first and second supporting shafts connected in a cooperating torque-transmitting relationship with said first and second magnet ends, respectively, by each said shaft having at least one aperture formed therein and configured to interfit with said at least one protrusion of said first and second ends, respectively,
- first and second springs axially biasing said first and second supporting shafts with said first and second magnet ends together, respectively, and
- a stator having a coil in inter-acting relationship with the rotor.
1 more element
A limited excursion motor comprising
- a moving permanent magnet rotor, said rotor including a solid imperforate magnet having first and second ends, each end having at least one slot formed therein,
- first and second supporting shafts connected in a cooperating torque-transmitting relationship with said first and second magnet ends, respectively, each of said shafts having at least one slot formed therein,
- first and second keys positioned to engage and fit into said slots formed in first and second magnet ends and first and second supporting shafts, respectively,
- first and second springs axially biasing said first and second supporting shafts with said first and second magnet ends together, respectively, and
- a stator having a coil in inter-acting relationship with the rotor.
2 more elements
Dependencies are inferred from the claim text.