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. 25, 2000
Filed:
Jan. 04, 1999
Charles G Machledt, New Port Richey, FL (US);
Other;
Abstract
A vault suitable for underground burial, having a vent capable of passing air into and out of the vault and excluding rising external water from entering the vault through the vent, and a valve assembly for accomplishing this exclusion. The vault has walls enclosing an open interior storage space. The vent has a conduit communicating between the interior space and the outside atmosphere. The valve assembly is located at the free end of the conduit. The valve assembly comprises a vertical, cylindrical chamber having a lower opening open to the atmosphere and an upper opening connected to the conduit. Two spherical floats of unequal diameter are occupy the chamber, with the smaller float located above the larger float. The upper float is a valve cooperating closely with a valve seat located at the upper opening. A grate or screen retains the floats in the chamber. When rising waters threaten to flood the vault, the floats rise, the upper float seating in the seat and closing the upper opening. The lower float increases buoyant force acting on the upper float.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile