Vibrator counterweight assembly for use in an electronic device and method of forming same
AssigneeMotorola, Inc.
InventorsPeter B. Gilmore, David E. Reiff, Jignesh G. Sharda
Life of this patent
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Abstract
A vibrator counterweight assembly for use in an electronic device includes an electric motor (201) and shaft (203) for providing rotational movement adjacent to a substrate (209). An eccentric counterweight (205) is connected to the electric motor (201) through the shaft (203). A bend reduction stop (207) is attached to the eccentric counterweight (205) and works to prevent damage to the shaft (203) during a high stress loading condition on the electronic device.
Claims15
A vibrator counterweight assembly in an electronic device comprising:
- an electric motor and shaft for providing rotational movement adjacent to a substrate;
- an eccentric counterweight connected to the electric motor through the shaft;
- a bend reduction stop attached to the eccentric counterweight;
- and
- wherein the bend reduction stop works to prevent damage to the shaft during a high stress loading condition on the electronic device.
A vibrator counterweight assembly for providing tactile annunciation in an electronic device comprising:
- a motor and drive shaft mounted on a substrate;
- a counterweight eccentrically attached to the drive shaft;
- a bend reduction stop attached to the counterweight;
- and
- wherein the bend reduction stop is oriented on the counterweight such that it faces the substrate when the counterweight rotates farthest from the substrate.
A method for forming a vibrator counterweight assembly for use with an electronic device comprising the steps of:
- rotating a shaft using an electric motor positioned adjacent to a substrate;
- connecting an eccentric counterweight to the electric motor through the shaft;
- attaching a bend reduction stop to the eccentric counterweight;
- and
- preventing damage to the shaft during a high stress loading condition on the electronic device by allowing the bend reduction stop to contact the substrate.
Dependencies are inferred from the claim text.