Water Additive Or Substitute Patents (Class 4/DIG10)
  • Patent number: 5352409
    Abstract: The present invention is directed to a method for adjusting the pH of the water in a hot tub or a spa without clouding to within the range of 7.0 to 8.0, without adversely removing calcium, and without adversely increasing the total alkalinity of the water. The method of the present invention comprises the steps of:a) adding to the water in the hot tub or spa from one to five pounds of buffer per 500 gallons of water, the buffer comprising from about 90% to 99.5% by weight boric acid and from about 10% to about 0.5% by weight sodium carbonate; andb) allowing the buffer to dissolve in the water;whereby the water is buffered without clouding to a pH within the range of 7.0 to 8.0, the dissolved calcium is not substantially removed, and the total alkalinity of the water is not adversely increased.In a preferred embodiment of the method, the pH of the spa or hot tub water is adjusted and/or maintained within the range of 7.2 to 7.8.
    Type: Grant
    Filed: June 17, 1993
    Date of Patent: October 4, 1994
    Assignee: Great Lakes Biochemical Company, Inc.
    Inventor: David J. Kierzkowski
  • Patent number: 5004025
    Abstract: An anti-drain clogging device used to containerize and dispense anti-clogging solution into a drain pipe in a controlled slow flow manner over an extended period of time. The anti-drain clogging device has a main container section for holding anti-drain clogging solution and a dispensing section for directing the anti-drain clogging solution from the container section to the inlet of a drain pipe. The device has both a liquid-tight, stable storage mode that the device is placed in prior to use and an operational mode where the device is adjustably fixed over a drain pipe inlet. In the operational mode, the dispensing section is adjusted to a chosen position over the opening of the drain pipe inlet by adjusting a support collar attached to the device. In this position, anti-clogging drain solution drips from the dispensing section in a controlled, slow manner into the drain pipe to steadily dissolve, layer by layer, the clogging and sediment in the pipe over a period of time.
    Type: Grant
    Filed: September 27, 1989
    Date of Patent: April 2, 1991
    Inventor: David L. Robbins
  • Patent number: 4787984
    Abstract: Treatment of water-containing reservoirs with a cleaning composition including a water-dissipatable polyester polymer, the polyester polymer concentration in the reservoir being in an amount effective to capture heavy metal ions, thereby inhibiting staining. In a preferred embodiment, the polyester complexes a perfume, the perfume being released in dilute solution as in the reservoir, whereby a fragrance bloom is provided to the environment.
    Type: Grant
    Filed: June 8, 1987
    Date of Patent: November 29, 1988
    Assignee: The Drackett Company
    Inventors: Richard S. Hutchings, Carey B. Bottom
  • Patent number: 4350666
    Abstract: This disclosure relates to an apparatus for dispensing which incorporates a jacketed compressed pellet of soluble material provided with an effective mixing chamber having a restricted opening to a surrounding ambient fluid to serve as a device to control the rate of dissolution of the chemical into the ambient fluid so that the dispensing apparatus has a service life substantially greater than the devices of the prior art.
    Type: Grant
    Filed: August 19, 1980
    Date of Patent: September 21, 1982
    Inventor: James H. Klutts