The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 01, 1994
Filed:
Jul. 29, 1992
Franklin L Forbes, LaOtto, IN (US);
Donald W Jones, Burnt Hills, NY (US);
General Electric Company, Fort Wayne, IN (US);
Abstract
An impact start assist device for an electric motor comprises a driven member coupled to a load and a drive member coupled to the motor and to the driven member. The driven member and the drive member are rotatable, relative to each other, through at least a portion of a revolution. The device further comprises an arrangement for providing a substantially instantaneous transfer of angular momentum from the drive member to the driven member after relative rotation of the members through at least the portion of the revolution. A locking arrangement is provided for locking the drive member and the driven member together at high rotational speeds. At least a portion of the locking arrangement is centrifugally actuated, and a spring is provided to disengage the locking mechanism at low speeds, or at rest. A spring arrangement is also provided to position the drive member and driven member in predetermined angular positions relative to each other when the drive and driven members slow to a predetermined low rotational speed, or to a stop. In one embodiment, the arrangement for instantaneously transferring momentum from the drive member to the driven member comprises a hammer surface and an anvil surface on the respective members which impact one another after the members have rotated through at least a portion of a revolution. The device may be constructed as a coupler to be situated between a motor and a load, integrally constructed as part of the motor or the load, or integrally designed into the rotor of the motor.