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:
May. 11, 1976
Filed:
Mar. 15, 1974
Applicant:
Inventor:
Robert Mayer, Ardmore, PA (US);
Assignee:
Sun Oil Company of Pennsylvania, Philadelphia, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
H03D / ; H03K / ;
U.S. Cl.
CPC ...
328133 ; 328 44 ; 328 45 ; 3072 / ; 3072 / ;
Abstract
Pulses produced by a stream flowmeter, at a repetition rate proportional to the actual flowrate of a liquid, are compared in a counter arrangement with pulses whose repetition rate is the demand flowrate for this liquid. The circuit produces an alarm whenever the difference between the actual flowrate and the demand flowrate is greater than 6%, or 10%. The alarm is inhibited until after 45 seconds subsequent to startup of the blending system for which the said liquid serves as one component.