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:
Jan. 24, 2012
Filed:
May. 20, 2009
Nobuhiro Hirata, Kanagawa, JP;
Nobuhiro Hirata, Kanagawa, JP;
Piolax Inc., Kanagawa, JP;
Abstract
According to an aspect of the present invention, there is provided a float valve apparatus including: a housing including: a partition wall dividing an internal space into lower and upper spaces and having an opening therein; a ventilation pipe communicating the upper space with an outside; a valve seat formed at the opening; and a communication hole communicating the lower space with the outside; a float that is valve vertically slidably movable in the lower space and that upwardly floats in accordance with liquid flowing thereinto to open and close the opening; an upward urging spring urging the float valve from the housing toward the opening; and a support spring disposed inside the upward urging spring to support the float valve to not contact with a bottom surface of the housing.