Patents by Inventor Andrew L. Johnston

Andrew L. Johnston 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: 6659516
    Abstract: The invention generally pertains to a portable computer having a base and a lid. More particularly, the invention pertains to an improved locking system for securing the base relative to the lid. One aspect of the invention relates to a latch that is placed in a recess when the lid is opened so as to eliminate unsightly and harmful protrusions. Another aspect of the invention relates to a latch that is automatically extracted from the recess when the lid is closed so as to secure the lid to the base. For example, a magnetic actuator may be used to automatically extract the latch when the lid is closed. Yet another aspect of the invention relates to a button for releasing the secured latch so as to allow the lid to be opened.
    Type: Grant
    Filed: January 5, 2001
    Date of Patent: December 9, 2003
    Assignee: Apple Computer, Inc.
    Inventors: Shyue-Yang Wang, John C. DiFonzo, Daniele De Iuliis, Andrew L. Johnston
  • Publication number: 20030037651
    Abstract: A saw with a safety system is disclosed. The safety system includes a detection system adapted to detect contact between a person and a blade while the blade is moving. The safety system further includes a brake system adapted to engage the blade and to stop the blade when the detection system detects contact between the person and the blade.
    Type: Application
    Filed: August 9, 2002
    Publication date: February 27, 2003
    Inventors: Stephen F. Gass, David A. Fanning, J. David Fulmer, David S. D'Ascenzo, Jonathan N. Betts-LaCroix, Robert L. Chamberlain, Joel F. Jensen, Andrew L. Johnston, Sung H. Kim, Anwyl M. McDonald, Benjamin B. Schramm
  • Publication number: 20020089190
    Abstract: The invention generally pertains to a portable computer having a base and a lid. More particularly, the invention pertains to an improved locking system for securing the base relative to the lid. One aspect of the invention relates to a latch that is placed in a recess when the lid is opened so as to eliminate unsightly and harmful protrusions. Another aspect of the invention relates to a latch that is automatically extracted from the recess when the lid is closed so as to secure the lid to the base. For example, a magnetic actuator may be used to automatically extract the latch when the lid is closed. Yet another aspect of the invention relates to a button for releasing the secured latch so as to allow the lid to be opened.
    Type: Application
    Filed: January 5, 2001
    Publication date: July 11, 2002
    Applicant: Apple Computer, Inc.
    Inventors: Shyue-Yang Wang, John C. DiFonzo, Daniele De Iuliis, Andrew L. Johnston
  • Publication number: 20020020263
    Abstract: Cutting machines with high-speed safety systems, and firing subsystems used in high-speed safety systems, are disclosed. The cutting machines may include a detection system adapted to detect a dangerous condition between a cutting tool and a person. A reaction system performs a specified action, such as stopping the cutting tool, upon detection of the dangerous condition. A fusible member or explosive may be used to trigger the reaction system to perform the specified action. A firing subsystem may be used to fuse the fusible member or fire the explosive upon detection of the dangerous condition.
    Type: Application
    Filed: August 13, 2001
    Publication date: February 21, 2002
    Inventors: Stephen F. Gass, Andrew L. Johnston, Joel F. Jensen, Sung H. Kim, David A. Fanning, Robert L. Chamberlain
  • Publication number: 20020020261
    Abstract: Woodworking machines are disclosed having cutting tools adapted to cut workpieces. The machines include a safety system adapted to detect one or more dangerous conditions between a person and the cutting tool, and to stop movement of the cutting tool upon detection of the dangerous condition. At least part of the safety system is housed in a removable cartridge.
    Type: Application
    Filed: August 13, 2001
    Publication date: February 21, 2002
    Inventors: Stephen F. Gass, David S. D'Ascenzo, Andrew L. Johnston, Joel F. Jensen, Sung H. Kim, Anwyl M. McDonald
  • Publication number: 20020017182
    Abstract: A saw is disclosed having a detection system adapted to detect a dangerous condition between a person and a saw blade, and a brake adapted to stop the saw blade in response to detection of the dangerous condition. The saw further includes a brake positioning system that allows the brake to be positioned in at least two different operable positions to accommodate at least two different blade diameters. The saw may include a system to detect brake-to-blade spacing.
    Type: Application
    Filed: August 13, 2001
    Publication date: February 14, 2002
    Inventors: Stephen F. Gass, Andrew L. Johnston
  • Publication number: 20020017181
    Abstract: Woodworking machines are disclosed having movable cutting tools for cutting workpieces in a cutting region. The machines include a detection system adapted to detect one or more dangerous conditions between a person and the cutting tools, and a reaction system associated with the detection system. The reaction system is configured to retract the cutting tool at least partially away from the cutting region upon detection of a dangerous condition by the detection system.
    Type: Application
    Filed: August 13, 2001
    Publication date: February 14, 2002
    Inventors: Stephen F. Gass, David A. Fanning, David S. D'Ascenzo, Joel F. Jensen, Sung H. Kim, Andrew L. Johnston
  • Publication number: 20020017184
    Abstract: A table saw having an adjustable blade, a detection system to detect contact between a person and the blade, and a brake mechanism to engage and stop the blade upon detection of contact between the person and the blade is disclosed. The saw includes a brake positioning system that adjusts the position of the brake mechanism to maintain the brake mechanism in an operative position relative to the blade as the position of the blade is adjusted. The saw also may include a retraction system that urges the blade downward, away from a user, upon detection of contact between a person and the blade. The retraction system may include a releasable gear. The saw may be constructed so that the blade is adjustable up and down around a pivot point downstream of the blade relative to the feed direction.
    Type: Application
    Filed: August 13, 2001
    Publication date: February 14, 2002
    Inventors: Stephen F. Gass, David A. Fanning, Joel F. Jensen, Sung H. Kim, Andrew L. Johnston, David S. D'Ascenzo
  • Publication number: 20020017180
    Abstract: Woodworking machines are disclosed having cutting tools adapted to cut workpieces. The machines include a detection system adapted to detect one or more dangerous conditions between a person and the cutting tool. The machines also include a brake mechanism having one or more braking components adapted to engage and stop the cutting tool in response to the detection of a dangerous condition.
    Type: Application
    Filed: August 13, 2001
    Publication date: February 14, 2002
    Inventors: Stephen F. Gass, Joel F. Jensen, Anwyl M. McDonald, David S. D'Ascenzo, Andrew L. Johnston
  • Patent number: 6293813
    Abstract: An electrical connector (10) includes a cable dock (12) having a first connector (16) and a backshell assembly (14) having a second connector (18). The second connector (18) is adapted for engagement with the first connector (16). The electrical connector (10) also includes a locking element (40) coupled to the cable dock (12) and a latch (46) coupled to the backshell assembly (14). The latch (46) is operable to engage the locking element (40) and, in response to movement of the latch (46) relative to the backshell assembly (14), engage the first connector (16) with the second connector (18).
    Type: Grant
    Filed: June 30, 2000
    Date of Patent: September 25, 2001
    Assignee: Silicon Graphics
    Inventors: Andrew L. Johnston, David C. North, Bruce R. Garrett
  • Patent number: 6042465
    Abstract: A method and apparatus for peeling crawfish or crayfish includes a machine frame that supports a peeling mechanism, preferably in the form of a pair of rollers rotatably mounted to the frame in a position that receives crawfish one at a time from a conveyor. The conveyor transports the crawfish to be peeled, the conveyor having first and second end portions. In the preferred embodiment, the conveyor includes multiple conveyor belts, at least two of which are positioned one above the other below the crawfish for sandwiching the crawfish therebetween to support them during use. The conveyor in combination with an alignment member straightens the tail portion of the crawfish and delivers the crawfish to the peeling mechanism. The alignment member can include an inclined plate or ramp that gradually extends the tail of the crawfish as the conveyor transports the crawfish toward the peeling mechanism.
    Type: Grant
    Filed: September 11, 1998
    Date of Patent: March 28, 2000
    Assignee: Administrators of the Tulane Educational Fund
    Inventors: Michael C. Larson, Andrew L. Johnston
  • Patent number: 5979724
    Abstract: A universal mounting apparatus to hold personal devices such as cellular telephones, walkie talkies, etc., by attaching onto a vehicle grill vent in the vehicle dashboard. This apparatus is not configured to any particular year or model of automobile or other vehicle, but is adaptable in several different ways so as to provide different attachment configurations. It is attachable without tools to most automobiles by use of two cable tie-like straps. One end of each strap hooks around a rib in the vent grill and the other end extends through a member which is held against a bracket, the feet of which bear against the dashboard immediately surrounding the vent grill. This allows the apparatus to conform to different sizes and shapes of vent grills while maintaining a firm connection.
    Type: Grant
    Filed: September 1, 1998
    Date of Patent: November 9, 1999
    Assignee: Command Audio Corporation
    Inventors: William J. Loewenthal, Jr., Robert B. Brownell, Andrew L. Johnston