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:
Dec. 12, 2006
Filed:
Oct. 23, 2003
Applicants:
Ian Campbell Mcgill, Auckland, NZ;
Lorraine Nevinson, Auckland, NZ;
Inventors:
Ian Campbell McGill, Auckland, NZ;
Lorraine Nevinson, Auckland, NZ;
Assignee:
Fisher & Paykel Appliances Limited, Auckland, NZ;
Primary Examiner:
Int. Cl.
CPC ...
D06F 33/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of operating a drain pump in a laundry washing machine during the drain phase of the wash cycle to reduce pump blockages is disclosed. The method includes the steps of (a) starting the pump and running it for a first period of time to produce a discharge of a given flow rate, (b) stopping the pump and leaving the pump stopped for a second period of time, and repeating steps (a) and (b) for the duration of said drain phase, said second period of time being such that the flow rate reduces substantially to zero.