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:
Nov. 03, 2015
Filed:
Sep. 30, 2013
Google Inc., Mountain View, CA (US);
Kevin Roach, San Jose, CA (US);
Nlkhil Singh Kohli, Menlo Park, CA (US);
Richard Wayne DeVaul, Mountain View, CA (US);
Sameera Sylvia Ponda, Mountain View, CA (US);
Google Inc., Mountain View, CA (US);
Abstract
A balloon having a balloon envelope that is fillable with a first lifting gas, a top plate arranged at a top of the balloon envelope, an outlet port that provides a passageway from an inside of the balloon envelope to the atmosphere, an inner bladder positioned within the balloon envelope and positioned at the top of the balloon envelope and coupled to the top plate, wherein the inner bladder is fillable with a second lifting gas, wherein the outlet port is configured to vent the first lifting gas to the atmosphere while keeping the second lifting gas in the inner bladder.