Patents by Inventor Charles M. Blackburn

Charles M. Blackburn 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: 4440160
    Abstract: An apparatus for preventing self-injurious behavior in patients is disclosed. The apparatus generally contains one or more sensor modules, which detect self-injurious blows, and a separate stimulation module, which produces an aversive electric stimulation. The sensor module and stimulation module are mounted directly on a patient's body members, e.g., a sensor module can be mounted on a headband worn around the patient's head and the stimulation module can be mounted on an arm band worn around the patient's arm. The sensor module communicates with the stimulation module by either: (1) transmitting radio waves, which are received by the stimulation module or (2) sending a small alternating electrical signal through the patient's body, which is detected by electrodes in the stimulation module. In operation, a sensor module detects a blow to the sensed body member and sends a signal to the stimulation module which in turn generates a controlled electrical current for aversive stimulation.
    Type: Grant
    Filed: January 19, 1982
    Date of Patent: April 3, 1984
    Assignee: The Johns Hopkins University
    Inventors: Robert E. Fischell, Glen H. Fountain, Charles M. Blackburn
  • Patent number: 4265074
    Abstract: A packaging machine processes a continuous web fed from a roll to form a sequence of packages or bags preferably filled with a product during its formation and sealing. The bag is formed by folding the web and sealing two web edges together longitudinally and thereafter transversely processing the web to close and seal the package ends before cutting the package from the web. In processing the package, the transverse processing mechanism operates intermittently cyclically or upon demand to grasp the web, move it, seal it and selectively to cut it to produce optionally either individual packages or a web connected sequence of two or more packages.The transverse processing mechanism comprises a piston operated reciprocable member with links moving two jaws on opposite sides of the web together into engagement with the web.
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: May 5, 1981
    Assignee: Sigma Systems, Inc.
    Inventors: Daniel L. Reuter, Philip L. Reid, Charles M. Blackburn, Clifton W. Heffner
  • Patent number: 4262474
    Abstract: A web feeding system reels the web off a web roll in increments of predetermined length for forming a package by a braked web spool and dancing roller array to pass through a work station such as a printer for registration at package sealing stations. The web is yanked, one package length at a time, by a reciprocating web transit motivating member grasping and withdrawing the web from the roll on an advance stroke and synchronized to brake the roll and to prevent movement through the feed path upon the return stroke.
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: April 21, 1981
    Assignee: Sigma Systems, Inc.
    Inventors: Daniel L. Reuter, Philip L. Reid, Charles M. Blackburn, Clifton W. Heffner
  • Patent number: 4262470
    Abstract: This invention provides a packaging system for processing a web from a roll to fold it, insert a product and to seal it about the product to form the package. All web processing equipment is cantilevered to one side of a panel to permit ready replacement and feeding of a new web roll. Quick changeover features are also included for changing web and package size. The entire drive mechanism for pulling the web through the system is a motor driven reciprocating member grasping and pulling a length of web through the system for each programmed package.Preferably the web is of a thermoplastic material which can receive and display such products as peanuts, and other food products, hardware, and the like. All mechanisms are in the form of cantilevered members for passing the web through a feed path held stationarily in place on a single panel except for the single reciprocating drive member.
    Type: Grant
    Filed: October 30, 1978
    Date of Patent: April 21, 1981
    Assignee: Sigma Systems, Inc.
    Inventors: Daniel L. Reuter, Philip L. Reid, Charles M. Blackburn, Clifton W. Heffner
  • Patent number: 4180153
    Abstract: A continuously moving stream of pieces taken from a storage bin is separated into precisely counted batches, for bagging, or the like. The flow speed of the pieces is optimized and substantially constant at a highest possible speed of flow higher than the batcher operating speeds will handle. Thereby this invention provides an alternative to eliminate the need for reducing flow speed because batchers require relatively long operating times and to avoid the disadvantage that reduction of the flow line speed when handling many successive batch pieces which is a slow process because of the high inherent inertia to changes of speed. In order to increase the flow speeds to higher effective batch handling rates, some of the pieces are removed from a high speed stream flow to create gaps in the flow stream between batches, thereby permitting optimized time interfacing with the necessary batching operations which thereby may proceed at a slower rate than the average piece by piece flow rate.
    Type: Grant
    Filed: April 27, 1978
    Date of Patent: December 25, 1979
    Assignee: Sigma Systems, Inc.
    Inventors: Ravi C. Krishnan, Charles M. Blackburn