Patents Assigned to Graf Plastics GmbH
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Patent number: 7854338Abstract: A water tank T of plastic material which is joined by using at least two open and identical tank parts 1 and a joining plane 2, the tank parts having respective opening structures R with a flattened inner opening edge, a sealing channel 26 being open towards the joining plane, and an outer flattened opening edge, the inner and outer opening edges within the opening edge structure are situated in each tank part 1, 35 in the joining plane 2, the opening edge at the same time defining inner and outer fitting surfaces 16, 17, respectively with a width exceeding the thickness X of the tank part wall 30 and the sealing channel wall 34 by at least about the half, such that the water tank T selectively can be manufactured from the same tank parts 1, 35 either monolithically by welding the fitting surfaces 16, 17 without sealing means in-between to each other or separable by clamping the opening edge structures R from the outer side with sealing means 33 provided between both tank parts 1, 35.Type: GrantFiled: August 30, 2007Date of Patent: December 21, 2010Assignee: Graf Plastics GmbHInventor: Otto P. Graf
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Patent number: 7572372Abstract: In a tank B for water treatment, consisting of at least two plastic material tank parts 1, 2 produced by injection moulding or by injection moulding and embossing a separately produced separation wall T is mounted with the edge at the walls of the tank parts such that the mounting regions at least partly are watertight. The separation wall T extends in the tank B crosswise to the joining plane E. The tank parts have opening edge structures R which fit on each other and which are joined in the joining plane E in watertight fashion.Type: GrantFiled: August 30, 2007Date of Patent: August 11, 2009Assignee: Graf Plastics GmbHInventor: Otto P. Graf
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Patent number: 7550077Abstract: The housing G of a downpipe filter A, which housing is to be mounted between downpipe ends 1, 2, has an exteriorly oriented outlet 6, an inner sieve device 32 and a collecting trough 27 communicating with the outlet 6, upper and lower housing parts 3, 4 each comprising a mounting socket S1, S2 for square downpipe ends 1, 2, and a housing intermediate section 5 at which the outlet 6 is provided and which housing intermediate section 5 is rotatable in relation to the housing parts 3, 4 about a housing axis X.Type: GrantFiled: October 12, 2007Date of Patent: June 23, 2009Assignee: Graf Plastics GmbHInventor: Otto Graf
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Publication number: 20080086953Abstract: The housing G of a downpipe filter A, which housing is to be mounted between downpipe ends 1, 2, has an exteriorly oriented outlet 6, an inner sieve device 32 and a collecting trough 27 communicating with the outlet 6, upper and lower housing parts 3, 4 each comprising a mounting socket S1, S2 for square downpipe ends 1, 2, and a housing intermediate section 5 at which the outlet 6 is provided and which housing intermediate section 5 is rotatable in relation to the housing parts 3, 4 about a housing axis X.Type: ApplicationFiled: October 12, 2007Publication date: April 17, 2008Applicant: Graf Plastics GmbHInventor: OTTO GRAF
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Publication number: 20080067179Abstract: A water tank T of plastic material which is joined by using at least two open and identical tank parts 1 and a joining plane 2, the tank parts having respective opening structures R with a flattened inner opening edge, a sealing channel 26 being open towards the joining plane, and an outer flattened opening edge, the inner and outer opening edges within the opening edge structure are situated in each tank part 1, 35 in the joining plane 2, the opening edge at the same time defining inner and outer fitting surfaces 16, 17, respectively with a width exceeding the thickness X of the tank part wall 30 and the sealing channel wall 34 by at least about the half, such that the water tank T selectively can be manufactured from the same tank parts 1, 35 either monolithically by welding the fitting surfaces 16, 17 without sealing means in-between to each other or separable by clamping the opening edge structures R from the outer side with sealing means 33 provided between both tank parts 1, 35.Type: ApplicationFiled: August 30, 2007Publication date: March 20, 2008Applicant: Graf Plastics GmbH, a German corporationInventor: Otto Graf
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Publication number: 20080053885Abstract: In a tank B for water treatment, consisting of at least two plastic material tank parts 1, 2 produced by injection moulding or by injection moulding and embossing a separately produced separation wall T is mounted with the edge at the walls of the tank parts such that the mounting regions at least partly are watertight. The separation wall T extends in the tank B crosswise to the joining plane E. The tank parts have opening edge structures R which fit on each other and which are joined in the joining plane E in watertight fashion.Type: ApplicationFiled: August 30, 2007Publication date: March 6, 2008Applicant: Graf Plastics GmbH, a German corporationInventor: Otto Graf