1899 – Burr,W.F. patents Switching device Oct.31,1899 Patent # 636,197 blackfacts.com


William F. Burr 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).

  • Efficient centrifugal impact crusher with dust removal capability and method of using same Patent number: 5248101 Abstract: A centrifugal impact crusher has an enclosed table to ensure that substantially all the material deposited on the table is impacted against the anvils that surround the table. The table includes spaced-apart upper and lower plates that have radially oriented impellers sandwiched between them to direct material being thrown off of the table by centrifugal force to exit the table at the proper angle to achieve maximum fracture upon striking the anvils. The impellers have projecting tabs which fit into receptacles in the upper and lower plates and the plates are squeezed together to hold the tabs in the receptacles and lock the plates and impellers together in a rigid table assembly. The upper plate has a central opening through which material is deposited onto the table. A funnel directs material fed into the crusher through an infeed plenum and into the central opening in the upper plate to ensure that all of the material reaches the table.Type: Grant FiledMay 11, 1992 Date of Patent: September 28, 1993Assignee: Canica Crushers, Inc.Inventors: Neil M. Rose, Stephen B. Ackers, Brett M. Rose, William F. Burr