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:
Sep. 07, 2015
Filed:
Jan. 30, 2007
James W. Holley, Colorado Springs, CO (US);
James W. Holley, Colorado Springs, CO (US);
Medela Holding AG, Baar, CH;
Abstract
A flow control element (e.g., a baby bottle nipple or a child nippy cup flow control valve) that includes a tube-like wall section defining a flow channel, and a substantially flat membrane supported by the wall section such that membrane impedes flow through the flow channel to an external region. The membrane punctured to form multiple, substantially round pinholes arranged in a two-dimensional pattern that remain closed to prevent fluid flow under normal atmospheric conditions, and open and to facilitate fluid flow rate through the membrane under an applied pressure differential (e.g., when sucked on by a child). The wall section has a greater rigidity than the membrane (which is formed from a relatively highly elastic material). Different sized pinholes are produced using different sized pins, thereby facilitating different flow rates in response to different applied pressure differentials. The pinholes are generated while stretching the membrane in a radial direction.