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:
Aug. 24, 2021
Filed:
Mar. 26, 2020
Chapman/leonard Studio Equipment, Inc., North Hollywood, CA (US);
Leonard T. Chapman, North Hollywood, CA (US);
CHAPMAN/LEONARD STUDIO EQUIPMENT, INC., North Hollywood, CA (US);
Abstract
A camera dolly includes a folding arm having a lower end of a first arm section pivotally attached to the chassis, and a lower end of a second arm section pivotally attached to an upper end of the first arm section. A hydraulic system includes a pump, an accumulator and a hydraulic cylinder connected to the first arm section. An arm drive system in the first arm section rotates the second arm section relative to the first arm section. The arm drive system may use chains and sprockets. An electrical system includes a battery contained within a lower rear opening of the chassis. The motor and an AC to DC converter are electrically connected to a motor mechanically connected to the pump. The pump is operated by the motor, and the motor is electrically powered by the battery and/or the AC to DC converter.