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. 28, 1976
Filed:
Sep. 02, 1975
Walter W Crichlow, La Habra Heights, CA (US);
Kobe, Inc., Huntington Park, CA (US);
Abstract
The cross section of a flow passage in a pitot tube of a pitot tube pump begins as circular, becomes continuously changing to ovular during a change in passage direction from circumferential to radial, and, when the passage is radial, is long and narrow with parallel sides and curved ends. Within a given, generally ovular cross section the passage has its greatest width at larger radii. The inside wall of the passage curves gradually from the entrance towards the axis of the pump, and, towards the purely radial portion of the passage, curves relatively sharply. A perimeter of the pitot tube in planes perpendicular to the tube's radial axis and parallel to the circumferential component of fluid motion externally of the pitot tube is in the form of a fluid foil having a leading edge which is relatively blunt with respect to the trailing edge. The long axis of the fluid foil points into the fluid.