Patents by Inventor Jeff Habberstad

Jeff Habberstad 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).

  • High speed safety block assembly
    Patent number: 6971636
    Abstract: A high speed safety block assembly includes a first and second cheek plates with a sheave and axle installed between the cheek plates. The cheek plates each have a recessed area on their inner surfaces and have interlocking ears which increase the safety of the block assembly by preventing the block assembly from coming apart in the event of a screw failure. The sheave of the high speed safety block assembly includes a needle bearing which rolls on the bearing surface of the axle, permitting much higher loads and speeds when the high speed safety block assembly is used.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: December 6, 2005
    Inventor: Jeff Habberstad
  • High speed safety block assembly
    Patent number: 6651962
    Abstract: A high speed safety block assembly includes a first and second cheek plates with a sheave and axle installed between the cheek plates. The cheek plates each have a recessed area on their inner surfaces and have interlocking ears which increase the safety of the block assembly by preventing the block assembly from coming apart in the event of a screw failure. The sheave of the high speed safety block assembly includes a needle bearing which rolls on the bearing surface of the axle, permitting much higher loads and speeds when the high speed safety block assembly is used.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: November 25, 2003
    Inventor: Jeff Habberstad
  • High speed safety block assembly
    Publication number: 20030111655
    Abstract: A high speed safety block assembly includes a first and second cheek plates with a sheave and axle installed between the cheek plates. The cheek plates each have a recessed area on their inner surfaces and have interlocking ears which increase the safety of the block assembly by preventing the block assembly from coming apart in the event of a screw failure. The sheave of the high speed safety block assembly includes a needle bearing which rolls on the bearing surface of the axle, permitting much higher loads and speeds when the high speed safety block assembly is used.
    Type: Application
    Filed: January 23, 2003
    Publication date: June 19, 2003
    Inventor: Jeff Habberstad
  • High speed safety block assembly
    Patent number: 6244570
    Abstract: A high speed safety block assembly includes a first and second cheek plates with a sheave and axle installed between the cheek plates. The cheek plates each have a recessed area on their inner surfaces and have interlocking ears which increase the safety of the block assembly by preventing the block assembly from coming apart in the event of a screw failure. The sheave of the high speed safety block assembly includes a needle bearing which rolls on the bearing surface of the axle, permitting much higher loads and speeds when the high speed safety block assembly is used.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: June 12, 2001
    Inventor: Jeff Habberstad