US 7,428,960 B2
Conveyor belt cleaning system
John Hall, Winfield, W. Va. (US)
Assigned to Martin Engineering Company, Neponset, Ill. (US)
Filed on Mar. 19, 2007, as Appl. No. 11/687,920.
Application 11/687920 is a continuation of application No. 10/865172, filed on Jun. 09, 2004, abandoned.
Application 10/865172 is a continuation of application No. 10/081389, filed on Feb. 22, 2002, granted, now 6,929,112, filed on Aug. 16, 2005.
Claims priority of provisional application 60/270825, filed on Feb. 22, 2001.
Prior Publication US 2007/0170041 A1, Jul. 26, 2007
Int. Cl. B65G 45/16 (2006.01)
U.S. Cl. 198—499  [198/497] 15 Claims
OG exemplary drawing
 
1. A mounting sub-assembly adapted for use with a scraper blade rigidly secured to a shaft for scraping and cleaning a conveyor belt, comprising:
at least one compression arm (802) attached to the shaft (502) that resiliently adjusts a position of the scraper blade (814) in relation to the conveyor belt (504) such that the scraper blade (814) contacts the conveyor belt (504) and rotates away from the conveyor belt (804) when the scraper blade (814) contacts a protrusion on the conveyor belt (504), said compression arm (802) comprising a base plate (810), a thrust collar (808) mounted to the shaft (502) for conjoint rotation therewith, a pivoting spindle (806) having a pivoting shaft, the pivoting spindle (806) having a first end and a second end, a means for securing the second end of the pivoting spindle (806) in pivotal communication with the base plate (810), a biasing member (804) having a first end releasably secured to the first end of the pivoting spindle (806) and a second end in communication with the thrust collar (808), wherein the biasing member (804) applies a linear biasing force toward and against the thrust collar (808) and the thrust collar (808) translates the linear biasing force into a rotational biasing force acting on the shaft (502) to rotate the rigidly secured scraper blade into scraping engagement with the conveyor belt, the biasing member (804) having a resilient nature permitting the compression arm (802) to retract when at least one of seams and debris affixed to the conveyor belt (504) contact the scraper blade (814), thereby rotating the shaft (502) and the scraper blade (814) away from the conveyor belt (504), and further permitting the scraper blade (814) to rotate back towards the conveyor belt (504) when at least one of seams and debris affixed to the conveyor belt (504) are no longer in contact with the scraper blade (814).