Larry E Hess

US Patent:

50609840, Oct 29, 1991

Filed:

Jan 22, 1991

Appl. No.:

7/644247

Inventors:

Larry W. Hess - Harrisburg PA

Assignee:

HammerTek Corporation - Landisville PA

International Classification:

F16L 4300

US Classification:

285127

Abstract:

A long lasting elbow allowing sharp turns in particulate material handling systems without having undue wear of the elbow is formed with a chamber aligned with but axially offset from the entry port of the elbow. The effect of this chamber is to provide a rotating mass of the conveyed material against which the subsequent material impinges and is directed through the elbow without undue loss of velocity. A vent conduit connects the chamber to the elbow channel to allow purging to the chamber through a venturi action.

US Patent:

43879144, Jun 14, 1983

Filed:

Jun 8, 1981

Appl. No.:

6/271122

Inventors:

Jerome I. Paulson - Landisville PA
Larry W. Hess - Harrisburg PA

Assignee:

Hammertek Corporation - Harrisburg PA

International Classification:

F16L 5500

US Classification:

285119

Abstract:

An elbow is disclosed for use in effecting short radius turns in fluent transport systems while overcoming the previous problem of high wear at the turn. The subject elbow includes entry and exit ports at right angles to each other, an arcuate channel extending between the ports, and a chamber aligned with but axially offset from the entryport. The effect of this chamber is to provide abrasive resistance for the elbow by allowing a soft plug of the fluent material to form therein. The material forming the plug will rotate in a vortex manner in the chamber. The subsequently passing fluent material will deflect off of the soft plug rather than rub on the walls of the elbow while making the direction change. The elbow may be provided with an optional purge vent entering into the chamber.