Patents by Inventor Calvin Derr

Calvin Derr 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).

  • Patent number: 7510062
    Abstract: A rotary damper includes a housing and a rotor rotatable in the housing. A clutch is movable toward and away from the housing when said rotor is rotated in first and second directions.
    Type: Grant
    Filed: October 10, 2006
    Date of Patent: March 31, 2009
    Assignee: Illinois Tool Works Inc.
    Inventors: Calvin Derr, Chad K. Zeilenga
  • Publication number: 20080224370
    Abstract: A latching rack damper assembly configured to dampen movement between two structures includes a rack and a damper housing. The rack includes a toothed track and an integrally formed first latching member. The damper housing is movably secured to the rack and includes a second latching member configured to securely latch to the first latching member.
    Type: Application
    Filed: December 19, 2007
    Publication date: September 18, 2008
    Inventor: CALVIN DERR
  • Publication number: 20070108000
    Abstract: A rotary damper includes a housing and a rotor rotatable in the housing. A clutch is movable toward and away from the housing when said rotor is rotated in first and second directions.
    Type: Application
    Filed: October 10, 2006
    Publication date: May 17, 2007
    Inventors: Calvin Derr, Chad Zeilenga
  • Patent number: 6298960
    Abstract: The viscous damper is formed with a body with a cylindrical wall presenting an edge with a circular tongue element thereon. A cap with a corresponding circular groove element is placed thereon so that the tongue and groove elements align with each other. The resulting tongue and groove configuration is ultrasonically welded thereby forming a hermetic seal. This particularly results in a very precise damper height which is important for small or miniature dampers.
    Type: Grant
    Filed: May 30, 2000
    Date of Patent: October 9, 2001
    Assignee: Illinois Tool Works Inc.
    Inventor: Calvin Derr
  • Patent number: 6213454
    Abstract: The damper includes a piston assembly which travels within a cylindrical damper housing between an extended position and a retracted position. A transverse channel is formed proximate to the open end of the damper housing. A latching diamond travels within the transverse channel. The piston assembly includes a piston shaft with a camming wall sub-assembly formed thereon which engages the latching diamond so that the piston assembly is latched in a “push-push” configuration in the extended position. In this latched configuration, the latching diamond is detent engaged by a concave detent apex formed on an island which includes a longitudinally chamfered portion. Additionally, the flexibility of the island in which the concave detent apex is formed may be increased by transverse passageways or “cored-out” areas in the piston shaft immediately adjacent to the island.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: April 10, 2001
    Assignee: Illinois Tool Works Inc.
    Inventors: Steven L. Bivens, Calvin Derr, Joseph Wach