Larry W Hess

50609840, Oct 29, 1991

Jan 22, 1991

7/644247

Larry W. Hess - Harrisburg PA

HammerTek Corporation - Landisville PA

F16L 4300

285127

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.

43879144, Jun 14, 1983

Jun 8, 1981

6/271122

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

Hammertek Corporation - Harrisburg PA

F16L 5500

285119

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.