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:
Jun. 14, 2022
Filed:
Aug. 10, 2018
Hewlett-packard Development Company, L.p., Spring, TX (US);
Christopher John Arnold, Vancouver, WA (US);
Hewlett-Packard Development Company, L.P., Spring, TX (US);
Abstract
Some examples include a print substance reservoir for a printing system including a housing to be arranged within a printing device, the housing having an interior for containing a print substance and an exterior, an active vent valve to allow gases to travel from the interior to the exterior when the inlet is receiving the print substance, the active vent valve electrically energizable and de-energizable in response to signals corresponding to the transfer of the print substance into the housing, a passive inlet valve to open to allow air to enter the interior during removal of the print substance from the reservoir, the passive inlet valve biased to a closed position, and a passive pressure relief valve to open when pressure within the interior is greater than a predetermined pressure limit, the passive pressure relief valve biased to a closed position.