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:
Jul. 16, 2019
Filed:
May. 23, 2016
Snap-on Incorporated, Kenosha, WI (US);
Craig Govekar, Gurnee, IL (US);
Rahhali Sanhaji, Sesto Fiorentino, IT;
Snap-on Incorporated, Kenosha, WI (US);
Abstract
The present disclosure relates to apparatuses and methods for multi-phase vacuum-assisted recovery of refrigerant from a vehicle. One apparatus for multi-phase vacuum-assisted recovery of refrigerant from a vehicle includes a compressor that removes refrigerant from the vehicle during a first phase and a second phase of a recovery process. The apparatus also includes one or more pressure sensitive devices that are each configured to measure a first pressure and/or a second pressure in the apparatus. Upon the first pressure being less than a first threshold pressure, a vacuum pump that is fluidly connected in series with the compressor assists the compressor in the removal of refrigerant from the vehicle during a second stage of the recovery process. Also, upon the second pressure being less than a second threshold pressure, the vacuum pump ceases assisting the compressor.