Roger L Siferd

6565350, May 20, 2003

Jan 19, 2001

09/766341

Roger Lee Siferd - Findlay OH
Matthew C. Ankrom - Findlay OH
Larry E. Porter - Findlay OH

Hancor, Inc. - Findlay OH

B29C 5334

425393, 425392, 425398, 425DIG 218

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, the pipe section preferably having a flared end, and the reinforcement structure preferably being a semicircular channel formed at the end of the pipe section by a mandrel after initial extrusion of the pipe section; along with a method and apparatus for forming the pipe section, a pipe assembly including such pipe section, and a method of forming the pipe assembly.

6660199, Dec 9, 2003

Jan 19, 2001

09/766856

Roger Lee Siferd - Findlay OH
Matthew C. Ankrom - Findlay OH
Larry E. Porter - Findlay OH

Hancor, Inc. - Findlay OH

B29C 5334

264150, 2642102, 264285, 264296

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, the pipe section preferably having a flared end, and the reinforcement structure preferably being a semicircular channel formed at the end of the pipe section by a mandrel after initial extrusion of the pipe section; along with a method and apparatus for forming the pipe section, a pipe assembly including such pipe section, and a method of forming the pipe assembly.

20040041302, Mar 4, 2004

Aug 27, 2003

10/649491

Roger Siferd - Findlay OH, US
Matthew Ankrom - Findlay OH, US
Larry Porter - Findlay OH, US

B29C053/08

264/295000, 264/296000, 264/339000

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, the pipe section preferably having a flared end, and the reinforcement structure preferably being a semicircular channel formed at the end of the pipe section by a mandrel after initial extrusion of the pipe section; along with a method and apparatus for forming the pipe section, a pipe assembly including such pipe section, and a method of forming the pipe assembly.

20050025573, Feb 3, 2005

Nov 25, 2003

10/722188

John Waldman - Findlay OH, US
Owen Atchison - Findlay OH, US
Roger Siferd - Findlay OH, US
Scott McNish - Findlay OH, US

E03F001/00
E02B011/00

405041000, 405036000, 210170000

A flow control structure is provided for the selective control of a liquid flow from an external body of liquid or for liquid and/or solid separation. The flow control structure includes a container, a float, and a valve. The container has an inlet, an outlet, and a closed bottom surface. The float is buoyantly positioned within the container and rises and falls in response to the level of liquid in the container. A valve is positioned inside the container and is coupled to the float by a linkage so that the valve opens when the float rises above a preselected height and the valve closes when the float falls to the preselected height within the container. The length of the linkage between the valve and the float determines the height of liquid required to open the valve. The valve may be positioned at an angle relative to the horizontal.

20060012166, Jan 19, 2006

May 16, 2005

11/129904

Roger Siferd - Findlay OH, US
Owen Atchison - Findlay OH, US
John Waldman - Findlay OH, US

F16L 27/00

285184000

A tubular pipe joint section has a) a first circular rim portion, b) a non-coaxial second circular rim portion, and c) an elliptical body wall extending from the first circular rim portion to the second circular rim portion.

20110277866, Nov 17, 2011

May 13, 2010

12/779634

Dave Downing - West Chester OH, US
Roger Siferd - Findlay OH, US
Nicholas Piazza - Bridgeport OH, US
Stan Holowiecki - Trenton OH, US
Howard Montgomery - Findlay OH, US

F16L 9/14
B23P 17/00
B23P 19/02

138140, 29525, 295271

A method of sealing a ventilation channel for a pipe is disclosed. The method includes inserting a sealing insert into a ventilation hole of the ventilation channel, applying rotational energy to the sealing insert, deactivating the rotational energy to the sealing insert once the sealing insert reaches a threshold position, and separating a first portion of the sealing insert being inserted in the ventilation channel from a second portion of the sealing insert.

20110277908, Nov 17, 2011

Jan 19, 2011

13/009046

Dave DOWNING - West Chester OH, US
Roger Siferd - Findlay OH, US
Nicholas Piazza - Bridgeport OH, US
Stan Holowiecki - Trenton OH, US
Howard Montgomery - Findlay OH, US

B29C 65/08
B29C 65/30

156 735, 1562751, 156321

A method of sealing a ventilation channel for a pipe is disclosed. The method may include inserting a sealing insert into a ventilation hole of the ventilation channel, applying a vibrational energy to a region between the sealing insert and the ventilation channel, deactivating the vibrational energy once the sealing insert and the ventilation channel are welded together at the region, and forming a flush interface between the sealing insert and the ventilation channel at the ventilation hole.

61995924, Mar 13, 2001

Feb 5, 1999

9/245766

Roger Lee Siferd - Findlay OH
Matthew C. Ankrom - Findlay OH
Larry E. Porter - Findlay OH

Hancor, Inc. - Findlay OH

F16L 900

138109

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, the pipe section preferably having a flared end, and the reinforcement structure preferably being a semicircular channel formed at the end of the pipe section by a mandrel after initial extrusion of the pipe section; along with a method and apparatus for forming the pipe section, a pipe assembly including such pipe section, and a method of forming the pipe assembly.