Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1998-04-27
2000-05-16
Marmor, Charles A
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
212155, 212247, F16H 3706
Patent
active
060621060
ABSTRACT:
A side load sensor is provided for sensing the longitudinal load on a rotary worm which is used to rotate a turret on a utility vehicle and wherein a boom is mounted on the rotatable turret. The load sensor includes a gear housing mounted on the turret for supporting a worm shaft for rotation about a horizontal axis, the worm being disposed centrally on the worm shaft. The bearing housing also includes a pair of spaced gear mounts for supporting the ends of the worm shaft and a worm gear disposed for rotation around a vertical axis. A motor is provided for rotating the worm shaft, the worm being arranged in driving relation with the worm gear. A sleeve is mounted at each end of the worm shaft for movement with the worm shaft in response to longitudinal forces transferred back from the worm gear to the worm. A polyurethane ring is mounted adjacent each end of the worm shaft and disposed between a flat surface on the adjacent sleeve and a flat surface on the associated bearing mount so that a polyurethane ring is compressed between a sleeve and its adjacent bearing mount depending upon the direction of the force exerted by the worm gear against the worm. A slidable spool is mounted in a spool bore in one of the gear mounted and connects with the sleeve. The spool is responsive to the compression of the polyurethane ring so as to sound an alarm signal and/or to shut off the motor which drives the worm shaft when the compression exceeds a predetermined valve.
REFERENCES:
patent: 4286479 (1981-09-01), Baumann et al.
patent: 5163570 (1992-11-01), Mundis et al.
patent: 5590968 (1997-01-01), Dretzka
Jackson David C.
Musshafen James D.
Marmor Charles A
Waddell Tisha D.
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