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:
Aug. 04, 2020
Filed:
May. 31, 2018
Altria Client Services Llc, Richmond, VA (US);
Srinivasan Janardhan, Glen Allen, VA (US);
Eric Hawes, Glen Allen, VA (US);
Yezdi B. Pithawalla, Midlothian, VA (US);
Altria Client Services LLC, Richmond, VA (US);
Abstract
The e-vaping device includes a housing, the housing defining one or more inlets, a power source, and a cartridge. The cartridge includes a reservoir containing a pre-vapor formulation. A heater and wick arrangement is in fluid communication with the reservoir. An annular seal is in fluid communication with the one or more inlets. The annular seal defines a first air passage. A flow restrictor is held by the annular seal. The flow restrictor defines a second air passage, the second air passage being configured to provide a desired resistance-to-draw (RTD) for the e-vaping device. A combined airflow cross-sectional area of the one or more inlets is greater than an airflow cross-sectional area of the second air passage. The flow restrictor is made from a first material that is harder than a second material for the annular seal.