Patents by Inventor Luis E. Prada

Luis E. Prada 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: 4474017
    Abstract: There is provided a method of assembling an anti-sweat heater in a refrigerator cabinet that includes forming the outer case of the cabinet with a sidewall and front face having a right angle corner therebetween and a flange spaced from the corner and inwardly turned from the front face with a depending lip extending towards and spaced from the cabinet sidewall. A heater retainer member is formed and has a portion thereof in cross section view with a front end shaped to receive the heater, a straight center section and two flexible wings, one on each side of the center section and diverging from the center section away from the front end, and also a rear end. The anti-sweat heater is placed in the front end of the retainer member and the heater and front end and center section including the wings of the retainer member are inserted through the space between the depending lip of the flange and the cabinet sidewall.
    Type: Grant
    Filed: September 7, 1982
    Date of Patent: October 2, 1984
    Assignee: General Electric Company
    Inventor: Luis E. Prada
  • Patent number: 4462437
    Abstract: Apparatus for controlling opening and closing movement of a door including manual actuation for opening the door and then biasing the door toward its closed position. A device for slowing and impeding movement of the door in the closing direction includes a flexible sealed container with a high viscosity fluid arranged to reciprocate in one direction responsive to opening the door and in the opposite direction to closing the door. A channel has a first section and a second section with the side walls and a sloping bottom wall between the sections providing a roller guide. A roller in contact with the sealed container is freely movable and has rotary and reciprocating motion within the roller guide of the stationary channel upon engagement with the flexible sealed container.
    Type: Grant
    Filed: December 9, 1981
    Date of Patent: July 31, 1984
    Assignee: General Electric Company
    Inventor: Luis E. Prada
  • Patent number: 4439998
    Abstract: The present refrigeration apparatus includes a single condenser and compressor, two evaporators, and more particularly an electronically controlled valve system that delivers refrigerant to one evaporator in preference to the other, but will cause the valve system to deliver refrigerant to the other evaporator after a predetermined amount of time.
    Type: Grant
    Filed: April 16, 1982
    Date of Patent: April 3, 1984
    Assignee: General Electric Company
    Inventors: Julius B. Horvay, Luis E. Prada
  • Patent number: 4332142
    Abstract: A refrigerator including a cabinet having storage compartment, an electrical anti-sweat heating means for arming a portion of the cabinet, refrigerating means including a compressor and an evaporator for cooling the compartment, and temperature sensing means to energize the compressor at one predetermined temperature and de-energize the compressor at a second lower temperature. There is provided a switch associated with the temperature sensing means to apply full electrical power to the electrical anti-sweat heating means when the compressor is energized and apply half electrical power to the electrical anti-sweat heating means when the compressor is not energized.
    Type: Grant
    Filed: October 14, 1980
    Date of Patent: June 1, 1982
    Assignee: General Electric Company
    Inventor: Luis E. Prada
  • Patent number: 4327556
    Abstract: A fail-safe electronically controlled defrost system is provided for use in a frost-free refrigerator suitable for home use. The defrost cycle, in the interests of power conservation, is made subject to plural input electronic control in a circuit in which the intrinsic reliability of the defrost system is specifically designed to revert to a non-power conservation mode in the event of failure of the electronics. Compressor time, door openings and user (vacation mode) settings are typical inputs for control of the period between defrosts.
    Type: Grant
    Filed: May 8, 1980
    Date of Patent: May 4, 1982
    Assignee: General Electric Company
    Inventors: Joseph J. Zampini, Paul R. Buda, Luis E. Prada
  • Patent number: 4300025
    Abstract: A switch operable by either one or both of two adjacent doors of a two-door refrigerator-freezer to control the lights therein. When both doors are closed, the lights in both compartments are deenergized and when either or both doors is open, the lights in either or both are energized respectively.
    Type: Grant
    Filed: December 10, 1979
    Date of Patent: November 10, 1981
    Assignee: General Electric Company
    Inventor: Luis E. Prada
  • Patent number: 4285212
    Abstract: An ice dispenser storage assembly for use in a freezer compartment of a refrigerator including a motor-driven ice dispenser. There is provided a cover secured to the inside of the freezer compartment and an ice storage receptacle movable from a first ice storage position to a second ice transfer position along and below the cover. Provision is made to stop the ice storage receptacle in the second ice transfer position and provision to energize the ice dispenser when the ice storage receptacle is in the second position and deenergize the ice dispenser when the ice storage is not in the second position.
    Type: Grant
    Filed: June 2, 1980
    Date of Patent: August 25, 1981
    Assignee: General Electric Company
    Inventor: Luis E. Prada
  • Patent number: 4241337
    Abstract: A magnet and one or more magnetic field responsive switches, preferably Hall effect sensors, are respectively mounted in alignment on opposing edges of a two door refrigerator in one preferred embodiment. Movement out of alignment of either the magnet or switch generates a door ajar signal to activate visual and/or audio alarms. Embodiments employing mono-polar and bipolar Hall effect sensors are shown. A single door embodiment is shown with the magnet held in a fixed position opposite the sensor mounted on the door edge.
    Type: Grant
    Filed: March 29, 1979
    Date of Patent: December 23, 1980
    Assignee: General Electric Company
    Inventor: Luis E. Prada
  • Patent number: 4069545
    Abstract: A device for controlling the opening and closing movement of a duct seal door of an automatic ice maker which requires a regulator for slowing down the closing of the door. The movement of the door about its rotational axis is transmitted via connecting linkages to the closure regulator which comprises a rotor positioned within a stator housing. The rotor's movement is coupled to the connecting linkages via a one-way clutch which decouples the rotor when the door is being opened, and causes positive coupling therebetween when the door is being closed. Disposed within the stator housing in a fixed-volume compartment is a viscous fluid, such as silicone gum. The rotor and stator include opposed rippled surfaces between which the viscous fluid is coactively disposed. The fluid acts as an impedance to the motion of the rotor, which motion occurs only upon the closing of the door, to thereby provide a controlled slow closure thereof.
    Type: Grant
    Filed: October 22, 1976
    Date of Patent: January 24, 1978
    Assignee: General Electric Company
    Inventors: Kenneth M. Holet, Luis E. Prada