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:
Oct. 14, 1986
Filed:
Oct. 14, 1983
Clarence A Dehne, Farmington Hills, MI (US);
Jervis B. Webb Company, Farmington Hills, MI (US);
Abstract
Power and free conveyor systems wherein each article carrier includes a driving trolley having a movable driving member biased to an operable position in which it is engageable with a driven pusher to propel the carrier along a carrier track, the pusher being supported by a vertically spaced power track. Formed integrally with the driving member are: a holdback dog, a driving dog having a pair of wings projecting transversely to each side of the holdback dog, a stopping cam and an abutment, an accumulation cam, and an anti-jam cam, all cams being adapted to disengage the driving dog from a pusher. The stopping cam and abutment are engageable with a trackside stop member to stop the carrier; the accumulating cam is engageable with an actuator on the rear of a preceding carrier, also to stop the carrier; and the driving dog wings are engageable by forwarding and receiving pushers travelling on side-by-side power tracks at a transfer zone where the driving member and pushers are relatively positioned vertically so that improper overtaking and lateral engagement between them is prevented by the anti-jam cam and by beveled side surfaces on the driving dog wings and the pushers. At this relative positioning, the pushers are not engageable with the holdback dog but only with a portion of the driving dog that projects outwardly of the holdback dog toward the power track, thereby preventing interference between the holdback dog and any of the pushers.