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. 15, 1977
Filed:
Oct. 01, 1975
Applicant:
Inventor:
Geoffrey Donald Black, Sawbridgeworth, EN;
Assignee:
The Medishield Corporation Limited, London, EN;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A62B / ; G01L / ;
U.S. Cl.
CPC ...
116 70 ; 128D / ;
Abstract
A device including a chamber having two inlets and an outlet. One inlet is connected to an expiratory valve in a lung ventilator or like machine, the other inlet is in communication with a whistle and the outlet is connected to an aspirator. The device gives an intermittent audible signal when the ventilator is operating and saves the operator of the ventilator from having to look at the expiratory valve thereof to verify its correct operation.