Patents Assigned to BMH Wood Technology, Inc.
  • Patent number: 5782365
    Abstract: A blade guide for a dual-frame wood chip sorter comprising a plurality of fingers having a slot therethrough to receive therein a blade, first and second mounting plates on each frame mounting thereon the bottom of a respective number of the fingers. At least one blade on the first frame is disposed intermediate adjacent fingers attached to a first mounting plate with each finger holding an intermediate blade being on another first mounting plate that is longitudinally separated from the other first plate on the frame. The pattern repeats for the second mounting plates with blades from the second frame.
    Type: Grant
    Filed: October 3, 1995
    Date of Patent: July 21, 1998
    Assignee: BMH Wood Technology, Inc.
    Inventors: Peter J. Zreloff, Alexander D. Cormack, Bengt A. Nilsson
  • Patent number: 5560729
    Abstract: A tensioning member for a blade screen that permits simultaneous tensioning of a plurality of blades in a blade screen, such as for wood chip sorting. The blades may be provided with a sawtooth detail on a bottom edge to reduce the build-up of wood ribbons or fines that would otherwise occur. An elastomeric joint is also provided which allows a dual-frame blade screen to be assembled, while compensating for any phase angle error between eccentric shafts provided to agitate the wood chips by moving the screens.
    Type: Grant
    Filed: October 31, 1994
    Date of Patent: October 1, 1996
    Assignee: BMH Wood Technology, Inc.
    Inventors: Alexander D. Cormack, Bengt A. Nilsson
  • Patent number: 5398819
    Abstract: A tensioning member for a blade screen that permits simultaneous tensioning of a plurality of blades in a blade screen, such as for wood chip sorting, is shown. The blade screen tensioning member includes a hinged bracket that may be supported on a portion of a frame, a spring steel blade holder for engaging a press-snap inserted into a hole in each of the engaged blades, and an elastic stop nut and stud for tightening and tensioning the blades. The blades are held in place at the opposite end of the frame by a similar holder, which, however, is fixed rather than hinged. The spring steel blade holder is reinforced for additional strength, and is bent at an approximately 45 degree angle where the press-snap is engaged. The blades themselves may also be provided with a sawtooth detail on a bottom edge to reduce the build-up of wood ribbons or fines that would otherwise occur. A sliding bearing with a dovetail configuration is also provided.
    Type: Grant
    Filed: January 13, 1994
    Date of Patent: March 21, 1995
    Assignee: BMH Wood Technology, Inc.
    Inventors: Alexander D. Cormack, Bengt A. Nilsson