Patents by Inventor Stewart R. Carl

Stewart R. Carl 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).

  • Publication number: 20010013234
    Abstract: An apparatus which inhibits the theft of equipment such as personal computers is disclosed. The equipment must have an external wall provided with a specially designed, approximately rectangular slot having preselected dimensions. An attachment mechanism includes a housing for a spindle having a first portion rotatable within the housing, a shaft extending outwardly from the housing, and a crossmember at the end of the shaft having peripheral dimensions closely conforming to the internal dimensions of the slot. An abutment mechanism also emanates from the housing, and is located on opposite sides of the shaft intermediate the housing and the crossmember. The peripheral cross-sectional dimensions of the abutment mechanism and the shaft in combination closely conform to the dimensions of the slot. The length of the shaft from the housing to the crossmember is approximately equal to the thickness of the external wall of equipment.
    Type: Application
    Filed: November 12, 1999
    Publication date: August 16, 2001
    Inventors: WILLIAM R. MURRAY, STEWART R. CARL, ARTHUR H. ZARNOWITZ
  • Patent number: 6155088
    Abstract: An apparatus which inhibits the theft of equipment such as personal computers is disclosed. The equipment must have an external wall provided with a specially designed, approximately rectangular slot having preselected dimensions. An attachment mechanism includes a housing for a spindle having a first portion rotatable within the housing, a shaft extending outwardly from the housing, and a crossmember at the end of the shaft having peripheral dimensions closely conforming to the internal dimensions of the slot. An abutment mechanism also emanates from the housing, and is located on opposite sides of the shaft intermediate the housing and the crossmember. The peripheral cross-sectional dimensions of the abutment mechanism and the shaft in combination closely conform to the dimensions of the slot. The length of the shaft from the housing to the crossmember is approximately equal to the thickness of the external wall of equipment.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 5, 2000
    Assignee: ACCO Brands, Inc.
    Inventors: William R. Murray, Jr., Stewart R. Carl, Arthur H. Zarnowitz
  • Patent number: 6112562
    Abstract: An apparatus which inhibits the theft of equipment such as personal computers is disclosed. The equipment must have an external wall provided with a specially designed, approximately rectangular slot having preselected dimensions. An attachment mechanism includes a housing for a spindle having a first portion rotatable within the housing, a shaft extending outwardly from the housing, and a crossmember at the end of the shaft having peripheral dimensions closely conforming to the internal dimensions of the slot. An abutment mechanism also emanates from the housing, and is located on opposite sides of the shaft intermediate the housing and the crossmember. The peripheral cross-sectional dimensions of the abutment mechanism and the shaft in combination closely conform to the dimensions of the slot. The length of the shaft from the housing to the crossmember is approximately equal to the thickness of the external wall of equipment.
    Type: Grant
    Filed: February 27, 1998
    Date of Patent: September 5, 2000
    Assignee: Acco Brands, Inc.
    Inventors: William R. Murray, Jr., Stewart R. Carl, Arthur H. Zarnowitz
  • Patent number: 6112561
    Abstract: An apparatus which inhibits the theft of equipment such as personal computers is disclosed. In a preferred embodiment, a locking interface for the specially designed slot includes two legs pivotably coupled together about an articulation point. The two legs each have opposing flanges on a first end and handles on a second end. The two legs define a first and a second position, with the flanges and legs adapted for insertion and removal when in the first position. The flanges engage an inner surface of the wall when the legs are in the second position. The preferred embodiment includes a retainer that is coupled to the handles of the first and second legs that retain the legs in the second position when the flanges engage the inner surface. In the preferred embodiment, the handles define an aperture and an object extends through the aperture to hold the legs in the second position. The object may be any suitable object, including a cable or shackle of a lock.
    Type: Grant
    Filed: November 8, 1996
    Date of Patent: September 5, 2000
    Assignee: ACCO Brands, Inc.
    Inventor: Stewart R. Carl
  • Patent number: 6006557
    Abstract: An apparatus which inhibits the theft of equipment such as personal computers is disclosed. The equipment typically includes an external wall provided with a specially designed, approximately rectangular slot having preselected dimensions. An attachment mechanism includes a housing for a spindle having a first portion rotatable within the housing, a shaft extending outwardly from the housing, and a crossmember at the end of the shaft having peripheral dimensions closely conforming to the internal dimensions of the slot. The spindle is then rotated 90.degree. to misalign the crossmember with the slot, thereby attaching the attachment mechanism rigidly to the external wall. A cable is secured to the housing and to an immovable object so that the equipment cannot be stolen.
    Type: Grant
    Filed: September 11, 1997
    Date of Patent: December 28, 1999
    Assignee: ACCO Brands, Inc.
    Inventors: Stewart R. Carl, Alice Kasahara, Arthur H. Zarnowitz, William R. Murray, Jr.
  • Patent number: 6000251
    Abstract: An apparatus which inhibits the theft of equipment such as personal computers is disclosed. The equipment must have an external wall provided with a specially designed, approximately rectangular slot having preselected dimensions. An attachment mechanism includes a housing for a spindle having a first portion rotatable within the housing, a shaft extending outwardly from the housing, and a crossmember at the end of the shaft having peripheral dimensions closely conforming to the internal dimensions of the slot. An abutment mechanism also emanates from the housing, and is located on opposite sides of the shaft intermediate the housing and the crossmember. The peripheral cross-sectional dimensions of the abutment mechanism and the shaft in combination closely conform to the dimensions of the slot. The length of the shaft from the housing to the crossmember is approximately equal to the thickness of the external wall of equipment.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: December 14, 1999
    Assignee: ACCO Brands, Inc.
    Inventors: William R. Murray, Jr., Stewart R. Carl, Arthur H. Zarnowitz
  • Patent number: 6000252
    Abstract: An apparatus which inhibits the theft of equipment such as personal computers is disclosed. The equipment must have an external wall provided with a specially designed, approximately rectangular slot having preselected dimensions. An attachment mechanism includes a housing for a spindle having a first portion rotatable within the housing, a shaft extending outwardly from the housing, and a crossmember at the end of the shaft having peripheral dimensions closely conforming to the internal dimensions of the slot. An abutment mechanism also emanates from the housing, and is located on opposite sides of the shaft intermediate the housing and the crossmember. The peripheral cross-sectional dimensions of the abutment mechanism and the shaft in combination closely conform to the dimensions of the slot. The length of the shaft from the housing to the crossmember is approximately equal to the thickness of the external wall of equipment.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: December 14, 1999
    Assignee: ACCO Brands, Inc.
    Inventors: William R. Murray, Jr., Stewart R. Carl, Arthur H. Zarnowitz
  • Patent number: 5502989
    Abstract: An apparatus which inhibits the theft of equipment such as personal computers is disclosed. The equipment must have an external wall provided with a specially designed, approximately rectangular slot having preselected dimensions. An attachment mechanism includes a housing for a spindle having a first portion rotatable within the housing, a shaft extending outwardly from the housing, and a crossmember at the end of the shaft having peripheral dimensions closely conforming to the internal dimensions of the slot. An abutment mechanism also emanates from the housing, and is located on opposite sides of the shaft intermediate the housing and the crossmember. The peripheral cross-sectional dimensions of the abutment mechanism and the shaft in combination closely conform to the dimensions of the slot. The length of the shaft from the housing to the crossmember is approximately equal to the thickness of the external wall of equipment.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: April 2, 1996
    Assignee: Kensington Microware Limited
    Inventors: William R. Murray, Jr., Stewart R. Carl, Arthur H. Zarnowitz
  • Patent number: 5493878
    Abstract: An apparatus which inhibits the theft of equipment such as personal computers is disclosed. The equipment must have an external wall provided with a specially designed, approximately rectangular slot having preselected dimensions. An attachment mechanism includes a housing for a spindle having a first portion rotatable within the housing, a shaft extending outwardly from the housing, and a crossmember at the end of the shaft having peripheral dimensions closely conforming to the internal dimensions of the slot. An abutment mechanism also emanates from the housing, and is located on opposite sides of the shaft intermediate the housing and the crossmember. The peripheral cross-sectional dimensions of the abutment mechanism and the shaft in combination closely conform to the dimensions of the slot. The length of the shaft from the housing to the crossmember is approximately equal to the thickness of the external wall of equipment.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: February 27, 1996
    Assignee: Kensington Microware Limited
    Inventors: William R. Murray, Jr., Stewart R. Carl, Arthur H. Zarnowitz
  • Patent number: 5381685
    Abstract: An apparatus which inhibits the theft of equipment such as personal computers is disclosed. The equipment must have an external wall provided with a specially designed, approximately rectangular slot having preselected dimensions. An attachment mechanism includes a housing for a spindle having a first portion rotatable within the housing, a shaft extending outwardly from the housing, and a crossmember at the end of the shaft having peripheral dimensions closely conforming to the internal dimensions of the slot. An abutment mechanism also emanates from the housing, and is located on opposite sides of the shaft intermediate the housing and the crossmember. The peripheral cross-sectional dimensions of the abutment mechanism and the shaft in combination closely conform to the dimensions of the slot. The length of the shaft from the housing to the crossmember is approximately equal to the thickness of the external wall of equipment.
    Type: Grant
    Filed: April 5, 1993
    Date of Patent: January 17, 1995
    Assignee: Kensington Microware Limited
    Inventors: Stewart R. Carl, Arthur H. Zarnowitz, Gary L. Myers
  • Patent number: 5117661
    Abstract: Apparatus for preventing unwanted access to a disk drive is disclosed. A housing has a surface adapted to overlie the slot, an internal piston chamber extending inwardly from one end of the housing, and a lock receiving chamber intersecting the piston chamber immediate the ends of the housing. A fixed latch member extends outwardly from one end of the housing, and is provided with a lip at its distal end. A movable latch member is attached to a piston located in the piston chamber and projects outwardly parallel to the fixed latch member. The movable latch member has a lip at its distal end extending outwardly so that the lips of the respective latch member extend away from one another. The piston is movable inwardly with respect to the housing so that the latch members can be inserted into the disk drive slot, and thereafter the piston moves outwardly so that the lips of the latch members engage the corners of the slot. A lock mechanism is located in the lock receiving chamber of the housing.
    Type: Grant
    Filed: July 31, 1991
    Date of Patent: June 2, 1992
    Assignee: Kensington Microwave Limited
    Inventors: Stewart R. Carl, Alice M. Kasahara, Arthur H. Zarnowitz
  • Patent number: D337040
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: July 6, 1993
    Assignee: Kensington Microware, Ltd.
    Inventors: Stewart R. Carl, Alice M. Kasahara, Arthur H. Zarnowitz
  • Patent number: D337041
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: July 6, 1993
    Assignee: Kensington Microware, Ltd.
    Inventor: Stewart R. Carl
  • Patent number: D346733
    Type: Grant
    Filed: October 20, 1993
    Date of Patent: May 10, 1994
    Assignee: Kensington Microware Limited
    Inventors: Stewart R. Carl, Arthur H. Zarnowitz
  • Patent number: D347825
    Type: Grant
    Filed: January 25, 1993
    Date of Patent: June 14, 1994
    Assignee: Kensington Microware Limited
    Inventors: Arthur H. Zarnowitz, Stewart R. Carl
  • Patent number: D347987
    Type: Grant
    Filed: January 24, 1992
    Date of Patent: June 21, 1994
    Assignee: Kensington Microware Limited
    Inventors: Stewart R. Carl, Arthur H. Zarnowitz
  • Patent number: D356297
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: March 14, 1995
    Assignee: Kensington Microware Limited
    Inventors: Stewart R. Carl, Arthur H. Zarnowitz
  • Patent number: D360191
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: July 11, 1995
    Assignee: Kensington Microware Limited
    Inventors: Stewart R. Carl, Arthur H. Zarnowitz
  • Patent number: D374655
    Type: Grant
    Filed: October 25, 1994
    Date of Patent: October 15, 1996
    Assignee: Kensington Microware Limited
    Inventors: Stewart R. Carl, Arthur H. Zarnowitz