Patents by Inventor Albert J. Van Mullem

Albert J. Van Mullem has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Wear protection for a rock crushing system
    Patent number: 7195186
    Abstract: A segmented wear resistant band for protecting a surface subject to wear in a crusher is comprised of segments or concaves. The segments of the wear resistant band can be separated from each other by portions of reduced thickness. The portions of reduced thickness can be cut after the installation to the surface. The segments can also include a flange for reception in a recess between a spider and the top shell of a gyratory crusher.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: March 27, 2007
    Assignee: Sandvik Intellectual Property AB
    Inventor: Albert J. Van Mullem
  • Gyratory crusher spider piston
    Patent number: 6772970
    Abstract: A spider sleeve and seal apparatus for a gyratory crusher has upper and lower cylindrical sleeves disposed between the spider and a vertically slidable piston. Fixed o-rings are located between the sleeves and the spider, and moving seals are located in the piston. These seals prevent leakage from the hydraulic ring used to support the piston and shaft of the gyratory crusher.
    Type: Grant
    Filed: January 11, 2001
    Date of Patent: August 10, 2004
    Assignee: Sandvik AB
    Inventors: Dale C. Davis, Albert J. Van Mullem
  • Gyratory crusher bearing retainer system
    Patent number: 6565025
    Abstract: A bearing retainer apparatus for a gyratory crusher is comprised of a bearing having a ball, a shaft disposed within the ball, and a plate secured to the shaft. Further, a method of assembling a bearing retainer system for a gyratory crusher includes attaching a bearing retainer plate onto the shaft of the crusher using bearing retainer bolts such that the bearing is clamped onto the shaft.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: May 20, 2003
    Assignee: Sandvik AB
    Inventors: Brek M. Zortman, Albert J. Van Mullem
  • Gyratory crusher dust seal system
    Patent number: 6550707
    Abstract: A dust seal system for a gyratory crusher having a shaft and a frame includes a bracket attached to the frame, a dust seal, and a collar. The bracket has a slot into which the dust seal is disposed, and the collar is in contact with the seal during crusher operation.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: April 22, 2003
    Assignee: Sandvik AB
    Inventors: Brek M. Zortman, Albert J. Van Mullem
  • Rock crusher seal
    Patent number: 6536693
    Abstract: A socket seal for a gyratory crusher is comprised of a ring with a pair of lips extending therefrom. The ring can have an outwardly expanding dovetail which is inserted into a slot in the piston or hemispherical bearing socket. The seal prevents downward flow of oil from the lubricated space between the hemispherical bearing ball and socket.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: March 25, 2003
    Assignee: Sandvik AB
    Inventors: Albert J. Van Mullem, Bernard R. McCready, Mark R. Zawlocki
  • Gyratory crusher spider guards
    Patent number: 6536694
    Abstract: A gyratory crusher uses a new spider arm guard and rim liner arrangement. The spider arm guard and rim liner are retained on the spider by means of a dowel and recess system.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: March 25, 2003
    Assignee: Sandvik AB
    Inventor: Albert J. Van Mullem
  • Gyratory crusher mainshaft
    Patent number: 6520438
    Abstract: A gyratory crusher uses a new head nut attachment apparatus. The gyratory crusher has a shell, a shaft disposed within the shell, a mantle covering a portion of the shaft, a head nut located above the mantle, and a sleeve between the head nut and the shaft. The sleeve is maintained in position on the shaft by means of a tapered contact surface between the sleeve and the shaft, and the head nut is threaded onto the sleeve.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: February 18, 2003
    Assignee: Sandvik AB
    Inventor: Albert J. Van Mullem
  • Wear protection for a rock crushing system
    Publication number: 20020170994
    Abstract: A segmented wear resistant band for protecting a surface subject to wear in a crusher is comprised of segments or concaves. The segments of the wear resistant band can be separated from each other by portions of reduced thickness. The portions of reduced thickness can be cut after the installation to the surface. The segments can also include a flange for reception in a recess between a spider and the top shell of a gyratory crusher.
    Type: Application
    Filed: January 11, 2001
    Publication date: November 21, 2002
    Inventor: Albert J. Van Mullem
  • Gyratory crusher dust seal system
    Publication number: 20020088886
    Abstract: A dust seal system for a gyratory crusher having a shaft and a frame includes a bracket attached to the frame, a dust seal, and a collar. The bracket has a slot into which the dust seal is disposed, and the collar is in contact with the seal during crusher operation.
    Type: Application
    Filed: January 5, 2001
    Publication date: July 11, 2002
    Applicant: Nordberg, Inc.
    Inventors: Brek M. Zortman, Albert J. Van Mullem
  • Gyratory crusher mainshaft
    Publication number: 20020088883
    Abstract: A gyratory crusher uses a new head nut attachment apparatus. The gyratory crusher has a shell, a shaft disposed within the shell, a mantle covering a portion of the shaft, a head nut located above the mantle, and a sleeve between the head nut and the shaft. The sleeve is maintained in position on the shaft by means of a tapered contact surface between the sleeve and the shaft, and the head nut is threaded onto the sleeve.
    Type: Application
    Filed: January 5, 2001
    Publication date: July 11, 2002
    Inventor: Albert J. Van Mullem
  • Gyratory crusher spider guards
    Publication number: 20020088888
    Abstract: A gyratory crusher uses a new spider arm guard and rim liner arrangement. The spider arm guard and rim liner are retained on the spider by means of a dowel and recess system.
    Type: Application
    Filed: January 5, 2001
    Publication date: July 11, 2002
    Applicant: Nordberg Inc.
    Inventor: Albert J. Van Mullem
  • Gyratory crusher spider piston
    Publication number: 20020088887
    Abstract: A spider sleeve and seal apparatus for a gyratory crusher has upper and lower cylindrical sleeves disposed between the spider and a vertically slidable piston. Fixed o-rings are located between the sleeves and the spider, and moving seals are located in the piston. These seals prevent leakage from the hydraulic ring used to support the piston and shaft of the gyratory crusher.
    Type: Application
    Filed: January 11, 2001
    Publication date: July 11, 2002
    Inventors: Dale C. Davis, Albert J. Van Mullem
  • Rock crusher seal
    Publication number: 20020088885
    Abstract: A socket seal for a gyratory crusher is comprised of a ring with a pair of lips extending therefrom. The ring can have an outwardly expanding dovetail which is inserted into a slot in the piston or hemispherical bearing socket. The seal prevents downward flow of oil from the lubricated space between the hemispherical bearing ball and socket.
    Type: Application
    Filed: January 5, 2001
    Publication date: July 11, 2002
    Applicant: Nordberg Inc
    Inventors: Albert J. Van Mullem, Bernard R. McCready, Mark R. Zawlocki
  • Gyratory crusher bearing retainer system
    Publication number: 20020088884
    Abstract: A bearing retainer apparatus for a gyratory crusher is comprised of a bearing having a ball, a shaft disposed within the ball, and a plate secured to the shaft. Further, a method of assembling a bearing retainer system for a gyratory crusher includes attaching a bearing retainer plate onto the shaft of the crusher using bearing retainer bolts such that the bearing is clamped onto the shaft.
    Type: Application
    Filed: January 5, 2001
    Publication date: July 11, 2002
    Applicant: Nordberg, Inc.
    Inventors: Brek M. Zortman, Albert J. Van Mullem