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. 26, 1988
Filed:
Feb. 20, 1987
Applicant:
Inventors:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
128645 ; 128652 ;
Abstract
The ophthalmotonometer of the invention comprises a frequency-output transducer of linear motions which correspond to intraocular pressure; a reference-frequency generator; a frequency comparator whose inputs are connected to the outputs of the frequency-output transducer and of the reference-frequency generator, a difference-frequency divider connected to outputs of the frequency comparator; a circuit for measurement of the cycle of difference-frequency oscillations connected to outputs of the reference frequency generator and the frequency divider, said cycle corresponding to intraocular pressure in millimeters of mercury; and a measurement results registration circuit connected to outputs of the cycle measurement circuit.