Patents Assigned to Zarina Holding C.V.
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Patent number: 5465443Abstract: Discs and a footpad for devices such as automatic swimming pool cleaners are disclosed. The discs incorporate upwardly-extending, non-truncated fins protruding radially from their peripheries. The peripheries themselves, moreover, define a plurality of tongues for increased flexibility, and both the discs and footpad may include ramped segments facilitating movement over obstacles extending from swimming pool surfaces. Also disclosed are discs having series of slits spaced along portions of their peripheries. Each such disc may be part of an assembly including a "bib," or cap, that too may be slitted if desired. The slits of each component, when present, permit its effective surface area to increase as the associated cleaner climbs the side of a swimming pool, enhancing the maneuverability of the cleaner. By contrast, unslitted portions of the cap seal, or cover, the slits present in the disc to provide adequate suction for the disc against the pool surface.Type: GrantFiled: November 4, 1994Date of Patent: November 14, 1995Assignee: Zarina Holdings C.V.Inventors: Chris A. Rice, Alain J. Gazzola, Desroy D. Smith, John T. Evans, Andrew W. Dawson
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Patent number: 5450645Abstract: Swimming pool cleaner components are provided to form a unitary combination of a body housing a diaphragm in communication with an inner tube and the body in communication with an outer tube around the inner tube and secured to the body to locate the diaphragm and inner tube with a rotatable coupling collar on the outer tube to position the components in an outer body of the swimming pool cleaner.Type: GrantFiled: July 6, 1994Date of Patent: September 19, 1995Assignee: Zarina Holdings, C.V.Inventor: David S. Atkins
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Patent number: 5433985Abstract: A disc for use with an automatic swimming pool cleaner which operates on a substantial intermittent reduction in water flow through the swimming pool cleaner is disclosed. The disc is made of flexible material and has grooves formed symmetrically across and into the under surface of the disc.Type: GrantFiled: March 15, 1994Date of Patent: July 18, 1995Assignee: Zarina Holdings C.V.Inventor: David S. Atkins
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Patent number: 5421054Abstract: Discs and a footpad for devices such as automatic swimming pool cleaners are disclosed. The discs incorporate upwardly-extending, non-truncated fins protruding radially from their peripheries. The peripheries themselves, moreover, define a plurality of tongues for increased flexibility, and both the discs and footpad may include ramped segments facilitating movement over obstacles extending from swimming pool surfaces.Type: GrantFiled: August 6, 1993Date of Patent: June 6, 1995Assignee: Zarina Holding C.V.Inventors: Andrew W. Dawson, John T. Evans, Alain J. Gazzola, Robert W. Marklew, Chris A. Rice, Desroy D. Smith
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Patent number: 5418995Abstract: Discs for devices such as automatic swimming pool cleaners are disclosed. The discs includes slots (or other suitable apertures) positioned near their rimmed peripheries. The peripheries themselves, moreover, incorporate rounded edges or beads, and both the discs and associated footpads may include ramped segments facilitating movement over obstacles extending from swimming pool surfaces.Type: GrantFiled: January 24, 1994Date of Patent: May 30, 1995Assignee: Zarina Holdings C.V.Inventors: Chris A. Rice, Desroy D. Smith, Robin O. Ellis, Alain J. Gazzola
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Patent number: 5363878Abstract: This invention concerns a relief valve for use in a swimming pool cleaner hose and has a body with an outlet for connection into the nose. A tubular inlet to the body carries a spider supporting a clamping flange which secures the outer periphery of a resilient annular diaphragm to the end of the body. The diaphragm has its inner periphery in frictional engagement with the inlet. The inlet may be mounted for axial movement against a resilient bias to engage the diaphragm only while a predetermined minimum flow passes through the valve.Type: GrantFiled: August 13, 1993Date of Patent: November 15, 1994Assignee: Zarina Holdings C.V.Inventor: David S. Atkins
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Patent number: 5315728Abstract: Adjustable components for swimming pool cleaners or other devices are disclosed. The components, when forming part of a fluid-interruption cleaner, can accommodate a variety of diaphragms (valves) of different lengths. The exterior of the cleaner's inner tube, to which the diaphragm is attached, includes a series of spaced, concentric ribs, any selected group of which may be gripped by a cantilever ring positioned between the inner tube and the cleaner body. Because the inner tube may be alternatively positioned relative to the cantilever ring and body, it can accept and accommodate diaphragms of varying lengths. The components also facilitate removal of the diaphragm and inner tube from the cleaner for inspection or, for example, when repair or replacement is desired.Type: GrantFiled: August 31, 1993Date of Patent: May 31, 1994Assignee: Zarina Holding C.V.Inventor: David S. Atkins
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Patent number: 5269913Abstract: A debris trap and in-pool skimmer for use in combination with a swimming pool cleaner having a housing; a housing lid having a conduit with an inlet and an outlet; a filter suspended within the housing; a downspout normal to and intersecting the conduit that penetrates the lid and the filter, is in fluid communication with the inlet and prevents direct flow between the inlet and the outlet; an exit port in the outlet that opens within the housing; and a one-way relief valve in the housing that opens within the filter.Type: GrantFiled: October 2, 1991Date of Patent: December 14, 1993Assignee: Zarina Holding C.V.Inventor: David S. Atkins
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Patent number: 5105848Abstract: A swimming pool cleaner relief valve comprising a body; a flow passage through the body having an inlet and an outlet for connection to a pipe having an induced flow therethrough; a bypass passage through the body connected to the flow passage and open to ambient conditions at a free end and having parallel ridges on its inner surface and a restriction at the free end; a flexible resilient diaphragm that slides coaxially within the bypass passage having a peripheral flange and a perforation permitting flow therethrough in only one direction and variable in size depending upon the degree of flexing of the diaphragm, and cooperating members movable in the parallel ridges to prevent complete withdrawal of the diaphragm from the bypass passage; and a collar having a ring with a recess that receives the flange and having serrated projections that engage the restriction.Type: GrantFiled: May 30, 1991Date of Patent: April 21, 1992Assignee: Zarina Holding C.V.Inventor: Dieter H. F. Kallenbach
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Patent number: 5100541Abstract: This invention is concerned with the sealing of component parts of equipment providing a path for liquid therethrough under reduced pressure and to the inclusion of a lip seal between the components with the lips directed outwardly of the joint between the components. More particularly the invention is concerned with the use of lip seals referred to in debris traps included in domestic swimming pool filtration equipment.Type: GrantFiled: March 30, 1990Date of Patent: March 31, 1992Assignee: Zarina Holding C.V.Inventor: Dieter H. F. Kallenbach
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Patent number: D325796Type: GrantFiled: March 1, 1989Date of Patent: April 28, 1992Assignee: Zarina Holding C.V.Inventor: Dieter H. F. Kallenbach
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Patent number: D343034Type: GrantFiled: March 5, 1990Date of Patent: January 4, 1994Assignee: Zarina Holding, C.V.Inventor: Dieter H. F. Kallenbach
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Patent number: D343035Type: GrantFiled: June 4, 1990Date of Patent: January 4, 1994Assignee: Zarina Holding, C.V.Inventor: Dieter H. F. Kallenbach
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Patent number: D346888Type: GrantFiled: September 6, 1991Date of Patent: May 10, 1994Assignee: Zarina Holding C.V.Inventor: William Stone