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:
Oct. 08, 2002
Filed:
Jun. 26, 2000
Dai Terasawa, Chiba, JP;
Hiroki Hanawa, Chiba, JP;
Seiko Instruments Inc., , JP;
Abstract
An air chamber device has an air pump having a first air discharge valve, an air chamber connected to the air pump for receiving air discharged by the first air discharge valve, and a second air discharge valve for discharging air from the air chamber. The air pump has an elastic body having an upper elastic part and a lower elastic part connected together to define an interior space. At least one through-hole is formed in the upper elastic part for introducing ambient air into the interior space. The first air discharge valve is connected to the elastic body for discharging air therethrough from the interior space when pressure is applied to the upper elastic part of the elastic body to elastically deform same while closing the through-hole to thereby reduce a volume of air in the interior space, and for preventing back-flow of air therethrough into the interior space when the pressure applied to the upper elastic part is released and the through-hole is opened so that ambient air is introduced through the through-hole and into the interior space.