Title:
ピンホール付き弾性膜を備える流れ制御素子
Document Type and Number:
Japanese Patent JP4906502
Kind Code:
B2
Abstract:
A flow control element (e.g., a baby bottle nipple or a child sippy 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 two-dimensional pattern that remain closed to prevent fluid flow under normal atmospheric conditions, and open 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 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.
Inventors:
Holly, James W, Junior
Application Number:
JP2006502983A
Publication Date:
March 28, 2012
Filing Date:
January 22, 2004
Export Citation:
Assignee:
Medela Holding Actien Gezel Shaft
International Classes:
A61J9/04; A61J11/00
Domestic Patent References:
| JP7059692A | ||||
| JP54117392U | ||||
| JP58000955U |
Foreign References:
| FR571788A1 | ||||
| GB2154451A | ||||
| US3047950 |
Attorney, Agent or Firm:
Shin Uchihara