Patents by Inventor Thomas D. Liston

Thomas D. Liston 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: 8272083
    Abstract: A faucet installation system and method for use on faucets that include a valve stem that is adapted for insertion through an aperture in a sink or a countertop is disclosed. The system uses a valve having a valve stem that is adapted for connection to a water supply line that connects to a water supply valve. The valve stem includes an external surface that cooperates with a retention nut that is split, so that retention nut may be attached to the valve stem after the valve stem and water supply line have been attached to one another and inserted through the aperture in the sink or countertop, eliminating the need to attach the water supply line to the stem from under the sink or countertop.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: September 25, 2012
    Inventors: Thomas D. Liston, Zachary E. Conrad
  • Patent number: 6446474
    Abstract: A key operated restraining device is provided to create a securing loop of adjustable dimension. The device includes a locking head portion, an elongated smooth surfaced strap insertable into the locking head portion to form a securing loop of adjustable dimension, a support block disposed in the interior of the head portion, and a pawl member. Both the support block and the pawl member terminate in a spaced relation to an interior wall surface of the head portion and form a slideway for the strap operation. The pawl member is connected to the locking head by a resilient hinge structure with a spike inserted into or attached to the pawl biasing the pawl member into a locking position wherein the locking structure is operative to lockably engage a smooth strap and a release position wherein the locking structure is disengaged from the strap.
    Type: Grant
    Filed: May 17, 2000
    Date of Patent: September 10, 2002
    Assignee: Secure Concepts, Ltd.
    Inventors: Otavio R. Tabacchi, Thomas D. Liston
  • Publication number: 20020088823
    Abstract: A system and method for controlling the dispensing of a fluid is disclosed, wherein the following capabilities may be provided: (a) regulation of the times that such dispensing can occur, (b) determination of the quality of the fluid so that, e.g., poor quality fluids can be purged, and/or (c) control of the system remotely. The system and method of the invention may be used for the dispensing of fluids such as beer and other beverages. A valve assembly in a fluid dispensing line can be configured to dispense the fluid, re-route the line contents so that it is purged when the quality of the fluid therein is determined to be unacceptable, or stop all flow of the fluid through the line. Quality detectors are provided for detecting the quality of the fluid being dispensed. For the dispensing of beer, an optical foam detector is disclosed as one such quality detector for detecting and purging a beer dispensing line when the line is substantially foam rather than beer.
    Type: Application
    Filed: October 19, 2001
    Publication date: July 11, 2002
    Applicant: Secure Concepts, Ltd.
    Inventors: Otavio R. Tabacchi, Michael H. Smith, Thomas D. Liston
  • Patent number: 5878613
    Abstract: A key control device comprises an access key and lock, and a stored key and lock. The access lock operably receives the access key and is keyed such that when the access key is inserted into the access lock, it becomes movable between an access key release state and an access key capture state. The stored lock operably receives the stored key and is keyed such that when the stored key is received by the stored lock it becomes movable between a stored key release state and a stored key capture state. Only one key can be removed at any given time from either lock and such removal locks the other key against removal so that it is retained by the key control device. The access and stored lock are totally independent and not interconnected in any way.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: March 9, 1999
    Assignee: Secure Concepts, Ltd.
    Inventors: Octavio Tabacchi, Thomas D. Liston