Patents by Inventor Mark A. Stultz

Mark A. Stultz 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: 7956297
    Abstract: A water resistant scale damper has a damper sleeve with an interior passage, an open top, and an open bottom. A piston is received in and axially slidable along the interior passage and has a top surface, an underside, and a piston rod extending from the underside toward the open bottom. A top cap is fitted over the open top of the sleeve and an air chamber is created between the top cap and the top surface of the piston. An air passage is formed through the top cap to permit air to enter and exit the air chamber. A portion of the top cap can create an elongate, non-linear air channel between the air passage and a port remote from the air passage and formed through the top cap. A bottom cap can also be fitted over the open bottom of the sleeve. The bottom cap has an annular flange that extends radially inward from a skirt of the bottom cap. The flange is funnel-shaped so as to direct liquid from beneath the underside of the piston toward a central opening in the flange.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: June 7, 2011
    Assignee: Rubbermaid Incorporated
    Inventors: Michael P. Dawson, Mark A. Stultz, Joseph Ramos
  • Publication number: 20100078229
    Abstract: A water resistant scale damper has a damper sleeve with an interior passage, an open top, and an open bottom. A piston is received in and axially slidable along the interior passage and has a top surface, an underside, and a piston rod extending from the underside toward the open bottom. A top cap is fitted over the open top of the sleeve and an air chamber is created between the top cap and the top surface of the piston. An air passage is formed through the top cap to permit air to enter and exit the air chamber. A portion of the top cap can create an elongate, non-linear air channel between the air passage and a port remote from the air passage and formed through the top cap. A bottom cap can also be fitted over the open bottom of the sleeve. The bottom cap has an annular flange that extends radially inward from a skirt of the bottom cap. The flange is funnel-shaped so as to direct liquid from beneath the underside of the piston toward a central opening in the flange.
    Type: Application
    Filed: October 1, 2008
    Publication date: April 1, 2010
    Applicant: Rubbermaid Incorporated
    Inventors: Michael P. Dawson, Mark A. Stultz, Joseph Ramos
  • Patent number: 6327103
    Abstract: A lens holder includes which a bottom cover, a top cover, sliding means and clipping means for holding lens assemblies in an optical lighting system. The bottom and top covers have a plurality of slot extensions lining the interior of the two covers. The top cover clips to the bottom cover by a set of clips on each side of the top cover to a set of clip slots on each side of the bottom cover. Lens assemblies can consist of lenses assembled in a holder along with individual lenses which can slide into between slot extensions.
    Type: Grant
    Filed: October 27, 2000
    Date of Patent: December 4, 2001
    Assignee: High End Systems, Inc.
    Inventors: Richard S. Belliveau, Thomas S. Cavness, Mikhail Dubinovskiy, Michael K. Rafalko, Mark A. Stultz, Terry L. Wilmoth
  • Patent number: 6172822
    Abstract: A lens holder includes which a bottom cover, a top cover, sliding means and clipping means for holding lens assemblies in an optical lighting system. The bottom and top covers have a plurality of slot extensions lining the interior of the two covers. The top cover clips to the bottom cover by a set of clips on each side of the top cover to a set of clip slots on each side of the bottom cover. Lens assemblies can consist of lenses assembled in a holder along with individual lenses which can slide into between slot extensions.
    Type: Grant
    Filed: February 25, 1998
    Date of Patent: January 9, 2001
    Assignee: High End Systems, Inc.
    Inventors: Richard S. Belliveau, Thomas S. Cavness, Mikhail Dubinovskiy, Michael K. Rafalko, Mark A. Stultz, Terry L. Wilmoth
  • Patent number: 6054816
    Abstract: A snubbing network is provided for reducing electromagnetic ("EM") radiation from and power dissipation of a lamp discharge ballast. The snubbing network employs at least one active device. That device being a switch coupled in parallel with the modulating switch within a converter of the ballast. The snubbing switch, in conjunction with a current limiting inductor, and a voltage change rate limiting capacitor serve to substantially eliminate reverse recovery current within a freewheeling diode of the converter prior to closing the larger (modulating) switch. Reducing the reverse recovery current before closing the modulating switch helps minimize power dissipation during switch closure. A benefit of reduced power dissipation is a reduction in EM radiation from the lamp ballast to noise sensitive electronic components placed nearby.
    Type: Grant
    Filed: June 2, 1997
    Date of Patent: April 25, 2000
    Assignee: High End Systems, Inc.
    Inventors: Brian E. Jurek, Mark A. Stultz
  • Patent number: 5515254
    Abstract: An automated color mixing wash luminaire includes a movable yoke and a housing movably connected to the yoke. The housing has a first portion including a light source and provides for removing heat generated from the light source. A second portion of the housing includes movable color filters and a power lens. The light source is operable to project a beam of light along a path through the color filters and the lens. Heat removal is provided by cooling fins and at least one heat filter supported in the path of the beam so that a portion of the beam passes through the heat filter and a portion of the beam is reflected from the path toward the cooling fins. The power lens is formed by a disc of cast transparent material including several lens elements in a honeycomb pattern. Each lens element has a convex surface. At least one of the color filters is a gradient density color filter formed of a disc-shaped substrate having a planar surface including a photolithograpically etched film deposited thereon.
    Type: Grant
    Filed: March 7, 1995
    Date of Patent: May 7, 1996
    Assignee: High End Systems, Inc.
    Inventors: Carroll W. Smith, Jeffrey T. Maddox, Mikhail A. Dubinovskiy, Mark A. Stultz, Christopher A. Cogburn
  • Patent number: 5455748
    Abstract: A lighting control console has a base and a top. The top includes a control panel having control members on one side operably connected to control circuits on an opposite side. The circuits are covered by a removable insulation member. The top is connected to the base and is movable relative to the base between a closed position and an open position. In the closed position, the top and base are in nested contact. In the open position, the top is raised relative to the base. A storage compartment is provided in the base. The storage compartment and circuits can be accessed when the top is in the open position. When the top is in the closed position, the insulation member insulates the circuits from the storage compartment. A handle is provided on the console and is suitable for hand gripping so that the control console can be carried.
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: October 3, 1995
    Assignee: High End Systems, Inc.
    Inventors: Lary R. Cotten, Mark A. Stultz
  • Patent number: D360404
    Type: Grant
    Filed: June 7, 1994
    Date of Patent: July 18, 1995
    Assignee: High End Systems, Inc.
    Inventors: Lary R. Cotten, Mark A. Stultz
  • Patent number: D365165
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: December 12, 1995
    Assignee: High End Systems, Inc.
    Inventor: Mark A. Stultz
  • Patent number: D370080
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: May 21, 1996
    Assignee: High End Systems, Inc.
    Inventor: Mark A. Stultz
  • Patent number: D372550
    Type: Grant
    Filed: November 7, 1995
    Date of Patent: August 6, 1996
    Assignee: High End Systems, Inc.
    Inventor: Mark A. Stultz
  • Patent number: D381740
    Type: Grant
    Filed: November 7, 1995
    Date of Patent: July 29, 1997
    Inventors: Michael W. Wood, Byron J. Ziegler, Richard S. Belliveau, Mark A. Stultz