Automatic cocking device for pelvic support section of chiropractic table
Patent 4245626 Issued on January 20, 1981. Estimated Expiration Date: November 29, 1999. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
An automatic cocking device is provided for a chiropractic table of the type having a pivotally mounted pelvic support section which is adapted to be cocked to an elevated position by rotation of a cocking shaft and adapted to be tripped to a dropped position by chiropractic thrusts. The cocking device has an electric motor which is connected through a speed reducing gear train and an eccentric mechanical linkage to a crank which is mounted on the cocking shaft of the table, so that the cocking shaft is rotated to cock the pelvic support section. The electric motor is controlled by a parallel-connected circuit having at least one foot-operated switch and a cam follower switch which is actuated by a cam driven by the output shaft of the speed reducer, so that the output shaft which drives the eccentric linkage makes substantially one full revolution upon actuation of the foot-operated switch. Support brackets and mounting clamps permit field installation of the automatic cocking device on existing tables having manually-operated cocking devices.