Patents by Inventor Peter Lefferson

Peter Lefferson 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: 20100089329
    Abstract: A selective pet feeding system comprising a gas or air blowing device that discourages a pet that should not eat at that station by gently blowing a stream of gas or air at the face of said pet. The pets are identified through the commonly understood technology of Radio Frequency Identification (RFID) and where a RFID fob attached to their body programmed with a code that is read by the selective feeding station.
    Type: Application
    Filed: October 14, 2008
    Publication date: April 15, 2010
    Inventor: Peter Lefferson
  • Patent number: 7500647
    Abstract: One of the greatest frustrations in the kitchen for a person with limited hand mobility is the task of holding the body of a jar while removing the lid. The present invention solves this problem by allowing the handicapped person's body to become the third hand and hold the bottle in a rigid grip. The new device clips over the front of any standard kitchen drawer and traps the jar between a V shaped vertical support and the front of the counter top. The jar is held rigid when the user presses their body against the drawer. Now both hands are free to remove the jar lid by any common means.
    Type: Grant
    Filed: November 29, 2006
    Date of Patent: March 10, 2009
    Inventors: Peter Lefferson, Kathleen Langan Lefferson
  • Publication number: 20080316027
    Abstract: A security alarm blanket can be placed over an object that is to be guarded. If someone approaches the blanket an audio, visual, and/or electronic alarm is sent. The blanket is made of a fabric with metal woven therein or a membrane material with a conductive surface and thus functions as the antenna for a proximity detector. The proximity detector may be activated from a remote controller allowing the operator the ability to prepare the object to be guarded and to deactivate the proximity detector without setting off the alarm.
    Type: Application
    Filed: June 25, 2007
    Publication date: December 25, 2008
    Inventor: Peter Lefferson
  • Publication number: 20070295876
    Abstract: One of the greatest frustrations in the kitchen for a person with limited hand mobility is the task of holding the body of a jar while removing the lid. The present invention solves this problem by allowing the handicapped person's body to become the third hand and hold the bottle in a rigid grip. The new device clips over the front of any standard kitchen drawer and traps the jar between a V shaped vertical support and the front of the counter top. The jar is held rigid when the user presses their body against the drawer. Now both hands are free to remove the jar lid by any common means.
    Type: Application
    Filed: November 29, 2006
    Publication date: December 27, 2007
    Inventors: Peter Lefferson, Kathleen Langan Lefferson
  • Patent number: 7267460
    Abstract: A night light appliance that when plugged into a standard wall electrical outlet provides a means to direct many beams of light to specific places in the room. Extending from the appliance body are bendable arms with bright light emitting diodes mounted at the end of each arm. The plastic body of each light emitting diode contains a lens that forms the light into a narrow beam. This night light is particularly suitable to a conventional bathroom where an electrical outlet is normally found high on the wall and near the sink. Unlike conventional night lights that illuminate the area near the outlet, these light beams can be directed to appropriate places like the doorway, sink, and toilet. It is also useful in a hallway by directing light beams down the length of the hall rather than lighting the area around the electrical plug.
    Type: Grant
    Filed: May 2, 2005
    Date of Patent: September 11, 2007
    Inventor: Peter Lefferson
  • Publication number: 20060269898
    Abstract: A dental light source brilliantly illuminates a dental patient's mouth by residing inside the mouth in place of or in addition to the conventional dental lamp. In the present art the conventional dental lamp is positioned in front of the patient's mouth and behind the dental practitioner's head. This dental lamp must be often adjusted by the dental practitioner in order to see particular parts of the patient's mouth. The dental practitioner's head and hands often block the light path. Earlier solutions to this problem have combined a light source and a dental mirror but these products were both very expensive and had cumbersome attached wires or fiber optic cables. These problems are cured by this new unique dental light source that may be temporarily clamped to a few teeth or be freely placed at any mouth location to brightly illuminate the rest of the mouth.
    Type: Application
    Filed: May 25, 2006
    Publication date: November 30, 2006
    Inventor: Peter Lefferson
  • Publication number: 20050243563
    Abstract: A night light appliance that when plugged into a standard wall electrical outlet provides a means to direct many beams of light to specific places in the room. Extending from the appliance body are bendable arms with bright light emitting diodes mounted at the end of each arm. The plastic body of each light emitting diode contains a lens that forms the light into a narrow beam. This night light is particularly suitable to a conventional bathroom where an electrical outlet is normally found high on the wall and near the sink. Unlike conventional night lights that illuminate the area near the outlet, these light beams can be directed to appropriate places like the doorway, sink, and toilet. It is also useful in a hallway by directing light beams down the length of the hall rather than lighting the area around the electrical plug.
    Type: Application
    Filed: May 2, 2005
    Publication date: November 3, 2005
    Inventor: Peter Lefferson
  • Patent number: 6955448
    Abstract: A low profile night light adapted to be positioned in a substantially level plane atop a floor has cylindrical sidewalls and apertures formed in the sidewalls at regularly spaced intervals. At least one light source such as an incandescent or fluorescent light or a light-emitting diode is positioned in registration with at least one of the apertures so that the at least one light source illuminates a fan-shaped area of a floor. A circular area is illuminated if a light source is placed into registration with each aperture. The night light may be positioned under a bed or other item of furniture and may be battery operated or connected to a wall outlet by an elongate power cord. Unlike a conventional night light that illuminates only an area near an electrical wall outlet, the novel night light can be positioned anywhere on a floor where a tripping hazard might exist.
    Type: Grant
    Filed: October 22, 2004
    Date of Patent: October 18, 2005
    Inventor: Peter Lefferson
  • Patent number: 5959533
    Abstract: A body worn transmitter and its associated portable monitoring receiver receiving global position signals, is provided with tamper detection to support twenty-four hour violation reporting from a subject under community supervision moves about the community. The body worn transmitter incorporates active radio frequency sensors to determine if the body worn transmitter has either been removed from the subject's body or the attachment strap has experienced tampering for the purpose of removal from the subject's body. A signal from the body worn transmitter is encrypted in order to prevent recording and retransmission of the body worn transmitter signal to an associated portable monitoring receiver for the purposes of masking body worn transmitter tampering or to make the body worn transmitter falsely appear in a different location. The body worn transmitter can be immersed in electrolyte solutions without generating a false tamper signal.
    Type: Grant
    Filed: May 27, 1997
    Date of Patent: September 28, 1999
    Assignee: Pro Tech Monitoring, Inc.
    Inventors: Hoyt M. Layson, Jr., David S. Segal, Peter Lefferson
  • Patent number: 4484141
    Abstract: A device for detecting the isoelectric end point in an isoelectric focusing system by electronically integrating, over successive time intervals, a characteristic of the electrical input to said zone as it varies with the increasing resistance of the zone. Most conveniently, the measured characteristic is the current through the zone which, under constant impressed voltage or power, asymptotically approaches a minimum value as the end point is reached.The measured characteristic is continually converted to a sequence of pulses indicative of the value of the characteristic. The end point is indicated when the difference between counts of these pulses over successive time intervals reaches a preselected value. At the end point, provision is made for replacement of the focusing voltage with a lower voltage to keep the ampholytes focused. A signal can be activated at the end point.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: November 20, 1984
    Assignee: FMC Corporation
    Inventors: Richard B. Cook, Calvin A. Saravis, Peter Lefferson
  • Patent number: 3985467
    Abstract: A controller maintains a constant desired fluid pressure in a fluid load driven by a variable flow fluid pump with a variable speed motor. A set point signal representing desired pressure and a signal from a pressure transducer representing actual pressure are applied to an error amplifier. The resulting error signal is applied through a variable gain stage to the motor control. The variable gain stage includes first and second variable gain amplifiers the first of which has a gain which is controlled inversely to pressure. The second variable gain amplifier has a gain which is controlled in proportion to flow. In this manner, the gain of the controller changes in inverse proportion to the restriction of the fluid load. This makes the performance of the controller independent of changes in the fluid load by keeping the total loop gain constant.
    Type: Grant
    Filed: May 27, 1975
    Date of Patent: October 12, 1976
    Assignee: Milton Roy Company
    Inventor: Peter Lefferson
  • Patent number: D928944
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: August 24, 2021
    Inventor: Peter Lefferson