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:
May. 18, 2021
Filed:
Feb. 13, 2017
Applicant:
Inficon Holding Ag, Bad Ragaz, CH;
Inventors:
Fredrik Enquist, Linkoping, SE;
Henrik Vennerberg, Linkoping, SE;
Assignee:
INFICON HOLDING AG, Bad Ragaz, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 3/04 (2006.01);
U.S. Cl.
CPC ...
G01M 3/04 (2013.01);
Abstract
A vacuum bell probe for detecting leaks in underground gas pipes may include a flexible suction cup having a bottom side forming a suction opening. The suction cup may define an interior volume. The bottom side may include a soft seal ring having a higher elasticity than the suction cup, surrounding the suction opening and forming a contact surface adapted to create a seal in contact with a ground surface under which a gas leak may be assumed such that a vacuum may be generated within the interior volume upon contact to the ground surface.