Patents Assigned to Van Der Graaf Inc.
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Patent number: 9284131Abstract: A conveyor drive roller for moving a conveyor medium. The conveyor roller has a hollow drum which is rotatably connected to a first and a second stationary shaft. An internal gear assembly is disposed inside the hollow drum and couples a motor to the hollow drum such that operation of the motor causes rotation of the hollow drum about the first and second stationary shafts. The hollow drum is configured to hold a liquid lubricant in contact with the internal gear assembly. Liquid lubricant flow paths are provided to move the liquid lubricant from inside the hollow drum to outside the hollow drum via the first or second stationary shafts, and vice versa. The liquid lubricant flow paths are configured for connection to a means for cooling the liquid lubricant.Type: GrantFiled: June 13, 2014Date of Patent: March 15, 2016Assignee: Van Der Graaf, Inc.Inventor: Alexander D. Kanaris
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Publication number: 20110111127Abstract: A roller for a conveyor comprising a cylindrical core defining a support surface; a helical groove disposed in said support surface and lagging bonded to said support surface.Type: ApplicationFiled: January 14, 2011Publication date: May 12, 2011Applicant: VAN DER GRAAF INC.Inventor: Alexander Kanaris
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Patent number: 7870949Abstract: A roller for a conveyor comprising a cylindrical core defining a support surface; a helical groove disposed in said support surface and lagging bonded to said support surface.Type: GrantFiled: July 13, 2005Date of Patent: January 18, 2011Assignee: Van Der Graaf Inc.Inventor: Alexander Kanaris
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Patent number: 7753193Abstract: A key sprocket drive system for a conveyor belt having a drive drum having an outer surface. The outer surface of the drive drum is adapted to engage a securement means. A contoured collar has an inner surface and an outer surface. The contoured collar is adapted to receive the securement means and adapted to engage the outer surface of the drive drum at predetermined positions therefore providing defined gaps between the inner surface of the contoured collar and the outer surface of the drive drum. The key sprocket drive system further comprises a sprocket member having a generally annular configuration with externally facing teeth-like protrusions at spaced intervals. The sprocket member is adapted to receive the securement means whereby the securement means engage the sprocket member and the contoured collar to secure the sprocket member and the contoured collar to the drive drum. The teeth-like protrusions engage the conveyor belt so as to drive the conveyor belt.Type: GrantFiled: July 17, 2007Date of Patent: July 13, 2010Assignee: Van Der Graaf, Inc.Inventor: Alexander D. Kanaris
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Patent number: 7510073Abstract: A motorized conveyor roller having a rotatable portion and at least one non-rotatable portion; including a method of inhibiting contact with a motorized rotatable conveyor roller that drives a conveyor roller that drives a conveyor medium.Type: GrantFiled: March 4, 2004Date of Patent: March 31, 2009Assignee: Van Der Graaf, Inc.Inventor: Alexander Kanaris
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Publication number: 20080011586Abstract: A key sprocket drive system for a conveyor belt having a drive drum having an outer surface. The outer surface of the drive drum is adapted to engage a securement means. A contoured collar has an inner surface and an outer surface. The contoured collar is adapted to receive the securement means and adapted to engage the outer surface of the drive drum at predetermined positions therefore providing defined gaps between the inner surface of the contoured collar and the outer surface of the drive drum. The key sprocket drive system further comprises a sprocket member having a generally annular configuration with externally facing teeth-like protrusions at spaced intervals. The sprocket member is adapted to receive the securement means whereby the securement means engage the sprocket member and the contoured collar to secure the sprocket member and the contoured collar to the drive drum. The teeth-like protrusions engage the conveyor belt so as to drive the conveyor belt.Type: ApplicationFiled: July 17, 2007Publication date: January 17, 2008Applicant: VAN DER GRAAF, INC.Inventor: Alexander Kanaris
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Patent number: 7244205Abstract: A key sprocket drive system for a conveyor belt having a drive drum having an outer surface. The outer surface of the drive drum is adapted to engage a securement means. A contoured collar has an inner surface and an outer surface. The contoured collar is adapted to receive the securement means and adapted to engage the outer surface of the drive drum at predetermined positions therefore providing defined gaps between the inner surface of the contoured collar and the outer surface of the drive drum. The key sprocket drive system further comprises a sprocket member having a generally annular configuration with externally facing teeth-like protrusions at spaced intervals. The sprocket member is adapted to receive the securement means whereby the securement means engage the sprocket member and the contoured collar to secure the sprocket member and the contoured collar to the drive drum. The teeth-like protrusions engage the conveyor belt so as to drive the conveyor belt.Type: GrantFiled: October 15, 2004Date of Patent: July 17, 2007Assignee: Van der Graaf, Inc.Inventor: Alexander D. Kanaris
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Patent number: 7228952Abstract: A shaft support or mount for supporting a conveyor roller and for dampening the vibrations of the conveyor roller or conveyor roller assembly in operation, by providing flexible connection structure in the shaft support, which is usually comprised of rubber. A method of dampening the transmittal of vibrations from a conveyor roller by providing a flexible connection structure in the shaft support.Type: GrantFiled: August 11, 2004Date of Patent: June 12, 2007Assignee: Van Der Graaf Inc.Inventor: Alexander Kanaris
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Patent number: 7204359Abstract: A support for supporting the end of a shaft protruding from a conveyor roller for dampening the vibrations of the conveyor roller by providing a flexible connection between spaced first and second supports where the supports include structure for resisting the separation of the rubber. A method of dampening the transmission vibrations of a conveyor roller assembly is also provided.Type: GrantFiled: July 18, 2005Date of Patent: April 17, 2007Assignee: Van der Graaf Inc.Inventor: Alexander Kanaris
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Patent number: 6938754Abstract: A self cleaning conveyor roller for supporting a conveyor media carrying contaminant materials. The conveyor roller consists of a drum defining a support surface, having a generally cylindrical shape, and being adapted to be supported for rotation, for supporting a conveyor media. The conveyor roller has a plurality of abutments on the support surface, raised above the support surface, and defining a series of spaced apart conveyor media support ridges lying on a circular configuration, concentric with the drum. The abutments are arranged in generally chevron shapes, around the drum. During rotation of the conveyor roller the abutments cause any debris or contaminants between the roller and the conveyor media to be guided out of the conveyor system. Also disclosed is a method of cleaning a conveyor roller.Type: GrantFiled: February 26, 2003Date of Patent: September 6, 2005Assignee: Van der Graaf Inc.Inventor: Alexander D Kanaris
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Publication number: 20050109585Abstract: A motorized conveyor roller having a rotatable portion and at least one stationary end.Type: ApplicationFiled: March 4, 2004Publication date: May 26, 2005Applicant: VAN DER GRAAF INC.Inventor: Alexander Kanaris
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Patent number: 6837364Abstract: An intermittent internal drive system for a drum conveyor, where the conveyor is started, stopped and restarted and having a drive drum with a hollow interior, a drive motor mounted within and enclosed by the drum for rotating the drum, a clutch located within and enclosed by the drum and connected to the motor and for transmitting rotation from the motor to the drum, and, a brake within and enclosed by the drum and connected to the drum for restraining rotation of the drum.Type: GrantFiled: February 25, 2003Date of Patent: January 4, 2005Assignee: Van Der Graaf Inc.Inventor: Alexander D Kanaris
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Publication number: 20040163934Abstract: An intermittent internal drive system for a drum conveyor, where the conveyor is started, stopped and restarted and having a drive drum with a hollow interior,Type: ApplicationFiled: February 25, 2003Publication date: August 26, 2004Applicant: VAN DER GRAAF, INC.Inventor: Alexander D. Kanaris
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Patent number: 6766900Abstract: An internally powered conveyor roller, of the type used for driving a conveyor one direction, and for preventing movement in opposite direction and having a drive roller for driving the conveyor medium, an internal drive motor for driving the roller, a one-way rotation device permitting rotation of the roller in one direction, and for preventing rotation in the opposite direction, and the one way rotation means being moveable between engaged and disengaged positions, and when in the disengaged position, being inoperative to prevent reverse rotation of the roller.Type: GrantFiled: November 15, 2002Date of Patent: July 27, 2004Assignee: Van der Graaf Inc.Inventor: Alexander D. Kanaris
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Publication number: 20030173190Abstract: A self cleaning conveyor roller for supporting a conveyor media carrying contaminant materials. The conveyor roller consists of a drum defining a support surface, having a generally cylindrical shape, and being adapted to be supported for rotation, for supporting a conveyor media. The conveyor roller has a plurality of abutments on the support surface, raised above the support surface, and defining a series of spaced apart conveyor media support ridges lying on a circular configuration, concentric with the drum. The abutments are arranged in generally chevron shapes, around the drum. During rotation of the conveyor roller the abutments cause any debris or contaminants between the roller and the conveyor media to be guided out of the conveyor system. Also disclosed is a method of cleaning a conveyor roller.Type: ApplicationFiled: February 26, 2003Publication date: September 18, 2003Applicant: VAN DER GRAAF , INC.Inventor: Alexander D. Kanaris