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:
Jan. 01, 2013
Filed:
Apr. 23, 2008
Applicants:
Bernie Ting, Hong Kong, CN;
Yau Choi Tse, Dalang Town, CN;
Chi Fai Chan, Hong Kong, CN;
Inventors:
Assignee:
Max Technology Capital Ltd, Aberdeen, HK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A63G 9/16 (2006.01); A63G 9/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The amplitude of a swing powered by an electric motor is controlled by detecting a peak voltage induced in the motor coil by the swing motion when the motor is not being powered and comparing the detected voltage with a one of a set of pre-measured reference values of peak voltages obtained at corresponding amplitude settings to provide a signal to a motor controller which adjusts the power supplied to the motor to bring the swing amplitude to. The motor controller supplies a PWM signal voltage to power the motor and adjusts the voltage on-time to bring or restore the swing to the selected amplitude.