The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 1990
Filed:
Jun. 22, 1989
Applicant:
Inventors:
James R Steele, Stillwater, MN (US);
Leonard Williams, Aylesbury, GB;
Assignee:
Dynamic Air, Inc., St. Paul, MN (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
D03D / ; F16L / ;
U.S. Cl.
CPC ...
138120 ; 138155 ; 138 39 ; 406191 ; 406 86 ; 406 45 ;
Abstract
Tubing or pipe bend or elbow for use in carrying pneumatically conveyed granular material has an axial bore with an input opening at one end and gradually diminishes to a smaller opening at the output end, such that the incoming material sees a pressure relief, or drop, at the input to the bend. As a feature, a tubing bend may be segmented, i.e., made out of a series of separate or individual bends with the output of one coupled to the input of another.