TIMER

专利名称：TIMER发明人：GROUT E,US申请号：US3732738D申请日：19710524公开号：US3732738A公开日：19730515

摘要：Two different gears mounted on the same axis and driven from a single powergear train to provide one gear as a slowly revolving timer with selectable pins triggeringintermittent operation of the faster power output gear. The power output gear has arecess which interrupts its drive from a pinion rotated constantly by the gear train, andthe triggering pin on the slow timing gear overtakes at a predetermined time setting anddrives the output gear to effect re-engagement of the pinion therewith. An undercutportion of the gear recess radially beneath the portion of the gear teeth on the outputgear disposed to be re-engaged by the drive pinion enables yielding of the gear teeth onthe output gear to effect intermeshing of the gear teeth thereof with the gear teeth ofthe drive pinion in the event of conflict. The hub of the output gears extends axiallythrough the slower timing gear and has a knob thereon for manual turning of the outputgear during manual servicing, and the drive pinion is axially movable to disengage thesame from the output gear during such manual servicing. The slow timer gear is springbiased axially to operative position and is manually movable axially against the spring andaway from the output gear to free the timer gear from the gear train and provide forpre-setting the time of day for triggering or initiating operation of the output gear. Aspring biased arm on the output gear is engageable by a pin on the timer gear to initiate

re-engagement of the output gear by the drive pinion, after which the output gearrotates through something less than a full revolution until the drive pinion registers withthe recess therein, and the arm pivotally yields against its spring as it engages successivepins during such rotation of the output gear by the drive pinion. In one embodiment thearm is withdrawn from the path of the pin at all times except when a predetermined factoccurs.

申请人：STA RITE IND INC,US

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