Assignee: Hancor, Inc.

Location: Findlay, OH
No. of patents: 39

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Number	Title	Issue Date
7063108	Corrugation structure for pipe A corrugated pipe 2 has a plurality of corrugation structures 10, 12 positioned adjacent one another. The corrugation structures 10, 12 comprise an inner cylindrical wall 22, two annular wall portions 28, 32 that extend outwardly f...	06/20/2006
7033496	Water clarification system with weir A casing surrounds a horizontal axis to define a cavity. The cavity has a top, a bottom, and axially front and rear ends. The casing is configured to conduct a mixture of a liquid and debris through the cavity from the front end to the rear end. Front and rear walls...	04/25/2006
6941972	Corrugated pipe A corrugation has a radially inner wall circumferentially surrounding an axis. The inner wall defines an inner cavity configured to conduct a liquid axially through the inner cavity. A radially outer wall of the corrugation overlies the inner wall. The outer wall ad...	09/13/2005
6907997	Water clarification system with coalescing plates A casing defines a cavity having a top, a bottom, and axially front and rear ends. The casing is configured to conduct a mixture of a liquid and a contaminant through the cavity from the front end to the rear end. A coalescer, located in the cavity, includes an incl...	06/21/2005
6840285	Corrugation structure for pipe A corrugated pipe (2) has a plurality of corrugation structures (10, 12) positioned adjacent one another. The corrugation structures (10, 12) comprise an inner cylindrical wall (22), two annular wall portions (28, 32) that extend o...	01/11/2005
6698975	Coupling structure for a leaching chamber A leaching chamber is configured to be coupled in series to another such leaching chamber located forward of the chamber and to yet another such leaching chamber located rearward of said leaching chamber. The leaching chamber comprises a conduit extending...	03/02/2004
6660199	Pipe structure and method of manufacture A pipe section formed of a polymeric material which has a substantially constant thickness throughout, the terminal edge of the female connection having a reinforcement structure which rigidifies the end of the female connection and prevents deformation, ...	12/09/2003
6578882	Corrugated pipe structure A pipe structure includes an annular corrugation centered on an axis. The corrugation has a cylindrical liner centered on the axis, two annular sidewalls extending radially outward from axially opposite ends of the liner, and an annular crown extending ax...	06/17/2003
6565350	Apparatus for forming a reinforcing structure on an end of a pipe A pipe section formed of a polymeric material which has a substantially constant thickness throughout, the terminal edge of the female connection having a reinforcement structure which rigidifies the end of the female connection and prevents deformation, ...	05/20/2003
6199592	Pipe structure and method of manufacture A pipe section formed of a polymeric material which has a substantially constant thickness throughout, the terminal edge of the female connection having a reinforcement structure which rigidifies the end of the female connection and prevents deformation, ...	03/13/2001
5669733	Angled adapter for a leaching chamber system A leaching system (10) includes arched leaching chamber sections (12) and an angled adapter (18) connected adjacent chamber sections at a 22.5° angle. The adapter includes a first portion (122) having sidewalls (140, 142) spanned by a vaulted portion (14...	09/23/1997
5556231	Severable leaching chamber with end cap A leaching chamber (10) includes first and second side walls (46) which have louver sections. The side walls are connected by vaulted portion (48) to define a chamber potion (12) terminating at a first end (16) and a second end (18). Male and female coupl...	09/17/1996
5415436	High pressuure coupling for plastic pipe and conduit A length of corrugated tubing is (B) inserted into a bell (C) having an open end 42. The corrugated tubing is defined by alternating annular portions peak (22) and valley portions (24) and a cylindrical inner wall (26) connected with an inner surface of t...	05/16/1995
5326138	High pressure coupling for plastic pipe and conduit A coupler (A) defines a bell (C) having a cylindrical wall (40) of substantially the same inner diameter as an outer diameter of peaks (22) of a length of corrugated tubing (B). The corrugated tubing includes a gasket (30) received in a valley (24) near o...	07/05/1994
4709723	Septic tank for alternative sewer systems A corrugated plastic side wall (A) extends from a bottom area (14) to an apex area (12). A riser (B) extends from the apex area above the ground level. A ring of steel channel (10) is fastened around the apex area to prevent the apex area from becoming di...	12/01/1987
4527319	Method and apparatus for manufacturing foldable conduit A sleeve of plastic material from an extruder is molded by a blow molding apparatus into a tubular structure which includes two top walls longitudinally connected at base ends and apex ends. A splitting apparatus splits the longitudinally connected base e...	07/09/1985
4523613	Multi-layered corrugated conduit with "black-eye" like apertures The conduit includes a top wall (A) and a base (B). The top wall A has an apex area (10) which is connected with a first corrugated side wall (12) and a second corrugated side wall (32). The side walls having alternating peaks (22, 42) and valleys (24, 44...	06/18/1985
4509911	Coupling structure and method and apparatus for its manufacture A plurality of internal couplers (A, B, C, D) are integrally connected end to end in a single tubing construction of indeterminant length. Between each coupler is an annular, frangible region (14, 24) of thin plastic. In the field, the individual couplers...	04/09/1985
4480855	Coupling structure for plastic pipe or tubing A plurality of internal couplers (A, B, C. D) are integrally connected end to end in a single tubing construction of indeterminant length. Between each coupler is an annular, frangible region (14, 24) of thin plastic. In the field, the individual couplers...	11/06/1984
4445542	Arch end cap An end cap particularly adapted for capping an arch conduit is provided. The end cap is comprised of an arch body including opposed arcuate side walls integrally joined together at an apex area. Opposed arcuate end walls are integrally joined at the termi...	05/01/1984
4402898	Coextrusion die assembly The coextrusion die assembly receives a first and a second plasticized material flow which it forms into a layered, cylindrically tubular flow. An inlet block (100) receives the first material flow axially and the second material flow radially. A manifold...	09/06/1983
4397585	Apparatus for inserting foldable conduit below ground A plow arrangement is disclosed for inserting continuous lengths of foldable conduit in the ground. A plow forms a cavity in the ground for receiving the conduit. Folded conduit is conveyed from a reel to an inlet end of a feeder or boot. As the conduit p...	08/09/1983
4374079	Method and apparatus for manufacturing expanded and layered semiround plastic tubings The specification discloses an apparatus and method for concurrently manufacturing at least two semiround tubing structures. An extruder including plasticizing means for a plurality of plastic resins extrudes semiround and linear strips of plastic materia...	02/15/1983
4363732	Inlet and outlet baffle structure for sewage treatment tanks This application discloses a septic tank construction including an inlet baffle structure and an outlet baffle structure for reducing the turbulence in the liquid or clear zone of the septic tank. The tank has oppositely disposed arcuate end walls which b...	12/14/1982
4360042	Arched conduit with improved corrugations A foldable conduit has a generally parabolic arched portion and a flat base. The arched portion comprises a pair of corrugated side walls which are connected with a hinge. The corrugations comprise alternating peak portions and valley portions. Each peak ...	11/23/1982
4359167	Subterranean plastic tank A corrugated, thin walled plastic tank is ideally suited for subterranean storage and transmission of sewage and other materials. The tank has a bottom wall which terminates in a peripheral edge disposed in a horizontal plane. A corrugated, peripheral wal...	11/16/1982
4357190	Method and apparatus for manufacturing non-round plastic tubing This application discloses the method and apparatus for manufacturing plastic tubing which comprises a rigid semiround, triangular, or the like top section and a flat base of flexible sheet-like material. The manufacturing comprises the steps of or appara...	11/02/1982
4296891	Expandable core for rolls of tubing An expandable core for handling and holding rolls of tubing. The core is comprised of support members connected to each other or a base extending along the longitudinal axis of the core by connecting links. The connecting links are pivotally attached at t...	10/27/1981
4286808	Snap-in tee connector A tee connector for coupling a corrugated tubing lateral normal to a larger diameter corrugated tubing main with a circular aperture in its side wall. The connector has a first end with a circular periphery sized to be received in the aperture. The first ...	09/01/1981
4254885	Subterranean plastic tank A thin-walled, one-piece plastic tank for subterranean storage and transmission of sewage or other materials. The tank comprises a bottom wall, an arched top wall and opposed end walls. The top wall is substantially semi-circular in cross-section with a p...	03/10/1981
4247136	Internal coupling structure and joint for pipe or tubing A coupler structure which facilitates the internal joining of a first length of hollow plastic pipe having internal corrugations defined by a plurality of alternating peaks and valleys to a second length of similar pipe or to some other structure. The cou...	01/27/1981
4245924	Arch conduit Disclosed is a foldable arched conduit suitable for use as drain tubing, culverts and the like. The conduit has the cross section of a parabolic arch with a flat base. The arched portion of the conduit comprises a pair of rigid corrugated plastic walls jo...	01/20/1981
4179227	Dynamic plow assembly and method of operating same A plow assembly and method useful for burying an elongated flexible member at a predetermined depth beneath ground level. The arrangement utilizes a frame assembly adapted to be pulled by a tractor type vehicle and which frame assembly has a vertically-ex...	12/18/1979
4082327	Connecting joint for corrugated plastic tubing A connecting joint construction particularly suited for use on large diameter corrugated plastic pipe or tubing. The joint is comprised of a first main length of corrugated, generally cylindrical plastic pipe having one end portion provided with corrugati...	04/04/1978
4076040	Alternator valve An alternator valve assembly particularly suited for below ground level use in septic systems for diverting flow from a single inlet to either of two separate outlets. The valve is comprised of a plastic housing which defines a valve chamber having an inl...	02/28/1978
4022384	Irrigation tubing Irrigation drip tubing including an outer tubular member having an inside wall and an outside wall and an inner tubular member having a repetitious pattern of inlet apertures, crests and roots. The crests engage the inside wall of an outer tubular member ...	05/10/1977
4020868	Alternator valve An alternator valve assembly particularly suited for use in septic systems for diverting flow from a single inlet to either of two separate outlets. The valve is comprised of a relatively thin walled, blow molded plastic housing which defines a valve cham...	05/03/1977
3951439	Modular cellular conduit assembly A modular assembly for constructing conduits of the type used for underground telephone lines, electrical lines, and the like. The specification discloses several embodiments each of which generally comprises a plurality of side-by-side corrugated plastic...	04/20/1976
3943971	Diverter valve The specification and drawings disclose a valve assembly particularly suited for use in septic systems for diverting flow from a single inlet to either of two separate outlets. The disclosed valve comprises a relatively thin-walled, blow molded plastic ho...	03/16/1976

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Assignee: Hancor, Inc.