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:
Aug. 10, 2021
Filed:
Jun. 16, 2017
Fisher & Paykel Healthcare Limited, Auckland, NZ;
Douglas Richard Wright, Auckland, NZ;
Peter Lawrence Grylls, Auckland, NZ;
Andrew Paul Maxwell Salmon, Auckland, NZ;
Philip John Dickinson, Auckland, NZ;
Yi-Cheng Sun, Auckland, NZ;
Silvan Terence Butler, Auckland, NZ;
Sergiu Constantin Filip, Auckland, NZ;
Samuel William Saunders, Auckland, NZ;
Andrew Martin Letton, Auckland, NZ;
Fisher & Paykel Healthcare Limited, Auckland, NZ;
Abstract
A breathing assistance apparatus that comprises a housing with inner and outer walls and an upper surface, wherein the walls and upper surface are integrally formed as a single part to avoid seams or joins between the walls to reduce the risk of damage to electronics within the apparatus as a result of liquid leaks. Also disclosed is a control system for a heating element of a humidifier which provides a secondary or back up protection mechanism to disable power to the heating element if a first electronic protection circuit does not cause the first switching member to disable power to the heating element.