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:
Jul. 25, 1978
Filed:
Oct. 08, 1976
Noboru Uyama, Osaka, JP;
Katsuaki Hara, Tondabayashi, JP;
Kubota Ltd., Osaka, JP;
Abstract
An electronic weighing apparatus, comprising: a scale mechanism having a weighing plate for placing an article being weighed, a slit plate provided to be moved associated with the weight of said article on said weighing plate and having a series of slit equally spaced in the moving direction, a light source provided at one side of said slit plate, a photodetector provided at the other side of said slit plate opposite to said light source, whereby a pulse train is generated from said photodetector the number of which pulses is associated with the movement of the slit plate and thus with the weight of said article, a counter for counting the number of pulses of said pulse train for providing the weight value, a display for displaying the weight value in said counter, a zero point detecting circuit for detecting the weighing plate having returned to the zero point, a balanced state detecting circuit for detecting said weighing plate having reached a balanced state, a measurement start switch, a first AND gate receiving the output from said measurement start switch, the output from said zero point detecting circuit and the output from said balanced state detecting circuit for providing an enabling signal, a tare weight deduction instructing switch, a second AND gate receiving the output from said tare weight deduction instructing switch, the output from said balanced state detecting circuit and a signal indicative of the weight value in the counter being plus, a tare weight deduction storing flip-flop responsive to the output from said second AND gate to be set and responsive to said enabling signal from said first AND gate to be reset, and means responsive to said set output from said flip-flop for resetting the tare weight value in the counter obtained for said tare, thereby to enable measurement of only the net weight of said thing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile