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:
Jun. 04, 2002
Filed:
Jun. 08, 2000
Paul A. Svejkovsky, Marquez, TX (US);
John Silvester, Brisbane, AU;
Other;
Abstract
A differential impulse conveyor includes a tray which is driven in a forward direction at a slow speed and a backward direction at a higher speed to slide goods with respect to the tray and thereby move goods along the tray. The drive motor powers the tray in the forward and backward directions through a drive shaft and a tray crank interconnecting the drive shaft and the tray. Controller is provided for varying the rotational speed of the motor shaft, thereby avoiding mechanical knock in the drive system. In another embodiment, a pair of counterweights are provided on opposing sides of the drive shaft , with respective counterweight cranks initiating forward movement of each counterweight at a preselected offset angular position with respect to forward movement of the tray. The differential impulse conveyor and method of the present invention substantially eliminates mechanical knocking in the drive system, thereby extending the useful life of the conveyor and minimizing the size of the conveyor components.