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:
Mar. 25, 1997
Filed:
Jan. 03, 1995
George DeBush, Hamden, CT (US);
The D & T, Inc., Hamden, CT (US);
Abstract
Miniature peak flow meter is compact, portable diagnostic device of beeper size. It consists of two bodies which create a curved cylinder inside which moves a rotational piston by means of rotation. The resistance to that movement is achieved by a specially created torsion spring. The mouthpiece is folded inside the device in unused position thus contributing to the compactness. By pulling out the mouthpiece and blowing through it, the patient rotates the piston by his expiratory flow and moves a pointer secured in a groove on the top side of the device. The pointer shows the value on a printed scale, and the patient writes it on a recording chart placed on the bottom surface of the device.