Patents by Inventor Jack Engelhart

Jack Engelhart 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: 4613169
    Abstract: A system for sealing a pool or spa fitting includes a wall having a frustoconical hole therethrough, the hole expanding towards the outer side of the wall. A conduit or inlet fitting is disposed in the hole and has an integrally formed enlarged end portion which abuts the inner surface of the wall. The fitting also has an externally threaded portion opposite the enlarged end, and a nut is threadably disposed on the fitting. A resilient, rubber seal such as a V-gasket or O-ring is disposed interjacent the fitting, the nut, and the surface of the hole. This construction ensures a positive seal of the spa or pool fluid system, while being of substantially simpler and less expensive construction than prior sealing systems.
    Type: Grant
    Filed: September 7, 1984
    Date of Patent: September 23, 1986
    Assignee: Quality Pool Supply Co.
    Inventor: Jack Engelhart
  • Patent number: 4603521
    Abstract: A pool coping system comprises a plurality of straight and curvable pool coping pieces. Each piece bears an opposing flange and groove thereon, which are alignable with the flange and groove on adjacent coping pieces. The pieces are joined by the insertion of an h-shaped clip into the adjacent coping pieces. The pool coping pieces comprise outward and inward piece portions. On only the foldable coping piece, the inward portion bears at least one V-shaped notch therein, with a corresponding number of relief cuts disposed in the outward piece portion opposite the at least one notch. A somewhat coplanar wall and flange are carried on the outward and inward piece portions, respectively. The invention includes the h-shaped clip, having two parallely disposed and longitudinally extending planar members. One of these members is narrower than the other, and is joined to the wider member by a somewhat perpendicularly disposed clip wall.
    Type: Grant
    Filed: November 3, 1983
    Date of Patent: August 5, 1986
    Assignee: Quality Pool Mfg. Co.
    Inventor: Jack Engelhart