Rotary pulse generator having preset sensor gap

Details Rotary pulse generator having preset sensor gap Rotary pulse generator having preset sensor gap

1994-12-22

1997-03-04

Dougherty, Thomas M.

Electrical generator or motor structure

Dynamoelectric

Rotary

324160, H02K 504, G01P 342

Patent

active

056082770

ABSTRACT:
A rotary pulse generator is disclosed for attachment to a rotary machine, such as a motor, having a rotary shaft extending therefrom. The generator includes a rotor which is secured to the shaft for rotation therewith. The rotor has a circumferential surface carrying an annular periodic pulse generating pattern, such as a magnetic pattern. A stator housing is secured to the machine. The stator housing carries a stator assembly including a sensor which is spaced radially from the rotor by a sensor gap. The sensor senses the pulse generating pattern and serves to provide pulses or the like having a frequency related to the angular velocity of the rotor. The sensor assembly includes a support block and a sensor support mounted to the support block for movement relative thereto between a retracted position located away from the rotor and a contact position wherein the sensor block contacts the rotor. A first means serves to drive the sensor block from the retracted position until the sensor block engages the rotor in the contact position. A second means drives the sensor block in a second direction away from the contact position toward the retracted position by a predetermined amount that defines the sensor gap.

REFERENCES:
patent: 3793545 (1974-02-01), Leiber et al.
patent: 4288746 (1981-09-01), Singbartl
patent: 4890059 (1989-12-01), Guentner
patent: 4901562 (1990-02-01), Beakas et al.
patent: 5081756 (1992-01-01), Abe et al.
patent: 5293125 (1994-03-01), Griffen et al.
patent: 5495758 (1996-03-01), Griffen et al.

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