John Nelson Hinde

Author:

John R. Hinde

ISBN #:

0774809353

Author:

John R. Hinde

ISBN #:

0774809361

Author:

John Hinde

ISBN #:

0198522037

Author:

John Hinde

ISBN #:

0198524137

Author:

John Hinde

ISBN #:

0874860512

Author:

John Hinde

ISBN #:

0954281306

Author:

John Roderick Hinde

ISBN #:

0773510273

US Patent:

8348247, Jan 8, 2013

Filed:

Mar 12, 2012

Appl. No.:

13/417756

Inventors:

John N. Hinde - Lake Bluff IL, US

Assignee:

Air Diffusion Systems, A John Hinde Company - Gurnee IL

International Classification:

B01F 3/04
B28B 11/16

US Classification:

261105, 261124, 264132, 264146, 138118

Abstract:

A flexible tubing for fine bubble aeration is provided with an air passageway defined in part by an upper portion and a lower portion. The tubing can be made of a uniform weighted material with more material in the lower portion than in the upper portion. This makes the tubing self-orienting, in that it will tend to orient itself with micro-slits along the upper portion facing upward and the lower portion facing downward when submerged in a body of water. An automated, one-stage production line converts raw tubing material to a finished tubing product without the need for separate processing. A method of coiling the tubing places the micro-slits approximately 90 away from the surface of a spool hub, thereby avoiding a longitudinal arch in the tubing and ultimately preventing roll-over and improper slit orientation after installation in a water body.

US Patent:

20080296789, Dec 4, 2008

Filed:

Nov 28, 2006

Appl. No.:

12/093354

Inventors:

John N. Hinde - Lake Bluff IL, US

International Classification:

B01F 3/04
B05B 1/20

US Classification:

261105, 264146, 264132, 138118

Abstract:

A flexible tubing for fine bubble aeration is provided with an air passageway defined in part by an upper portion and a lower portion. The tubing can be made of a uniform weighted material with more material in the lower portion than in the upper portion. This makes the tubing self-orienting, in that it will tend to orient itself with micro-slits along the upper portion facing upward and the lower portion facing downward when submerged in a body of water. An automated, one-stage production line converts raw tubing material to a finished tubing product without the need for separate processing. A method of coiling the tubing places the micro-slits approximately 90 away from the surface of a spool hub, thereby avoiding a longitudinal arch in the tubing and ultimately preventing roll-over and improper slit orientation after installation in a water body.