Patents by Inventor Gabriel L. Purnell

Gabriel L. Purnell 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: 6190440
    Abstract: An air and water purifying device includes a housing having an annular space containing a suitable adsorbent or desiccant material. The housing includes an inner wall forming an axial passage and an outer wall and end caps closing the annular space. The inner and outer walls include a plurality of slots extending in a circumferential direction to allow the flow of water or air through the annular space in a radial direction. The end caps of the housing include a central opening aligned with the axial passage to allow the flow of air or water through the housing. The container enclosing the adsorbent can be supported in a housing to support the container and face the outer wall of the container from the walls of the housing to allow the flow of air around the container. The housing preferably includes at least one permeable wall to allow air to flow into the housing.
    Type: Grant
    Filed: March 12, 1999
    Date of Patent: February 20, 2001
    Inventor: Gabriel L. Purnell
  • Patent number: 5224975
    Abstract: A deodorizing device for use in a pet's litter box, for example. The deodorizing device has a container body having an open end, a closed end and a cylindrical side wall defining a cavity therein. Chunks of zeolite are disposed within the cavity and retained within the container body by a sealing mechanism. The cylindrical side wall of the container body has a plurality of substantially uniform-sized apertures disposed thereon to permit exposure of the retained zeolite to the odors. A sealing mechanism may be permanently or releasably attached to the container body. A securing mechanism secures the deodorizing device to a structure within the malodorous environment. The zeolite after use can be recharged by exposing to fresh air, sunlight and heat and then reused. In addition to being used in a pet's litter box, the device can be used in many environments, including animal containment areas, living areas, production areas, food storage areas, work areas and automobiles.
    Type: Grant
    Filed: June 19, 1990
    Date of Patent: July 6, 1993
    Inventors: Gabriel L. Purnell, Diana W. Purnell
  • Patent number: 4882873
    Abstract: A kit for eliminating fleas, roaches, ants and other crawling insects from a confined area is described, as well as a method for its use. The kit comprises a container filled with a residual insecticide (most preferably a 0.50% chlorpyrifos formulation); an adjustable spray dispenser therefor; a high-strength flushing agent in an aerosol container (most preferably 1.07% pyrethrins); a standard fogging nozzle for dispensing the flushing agent from the aerosol container; an additional fogging nozzle having a long, thin, tubular extension for dispensing the flushing agent into cracks, crevices and voids in the area; at least one white monitoring insect trapping device having glue on at least one surface thereof; and an information sheet explaining how to use the kit in accordance with the method also described herein. Where roaches and ants are particularly sought to be eradicated, baited insect devices are also included.
    Type: Grant
    Filed: April 2, 1987
    Date of Patent: November 28, 1989
    Inventor: Gabriel L. Purnell