Inflatable manometers

• US 7,281,430 B2
• Filed: 12/02/2005
• Issued: 10/16/2007
• Est. Priority Date: 02/03/2003
• Status: Expired due to Fees

• Current Assignee: Dielectrics Industries, Inc.
• Original Assignee: Dielectrics Industries, Inc.
• Inventors: Pekar, Robert W., Epstein, Adam S., Cadwallader, Scott R.
• Primary Examiner(s): Lefkowitz; Edward
• Assistant Examiner(s): JENKINS, JERMAINE L
• Application Number:
  US11/293,643
• Publication Number:
  US 20060081059A1
• Time in Patent Office: 683 Days
• Field of Search: 73700-756
• US Class Current: 73/730
• CPC Class Codes: A61M 16/044 External cuff pressure control or supply, e.g. synchronisation with respiration
• CPC Class Codes: G01L 7/022 constructional details, e.g. mounting of elastically-deformable gauges G01L7/041, G01L7/061, G01L7/082, G01L7/102, G01L7/163, G01L7/182 take precedence
• CPC Class Codes: G01L 7/041 Construction or mounting of deformable tubes
• CPC Class Codes: G01L 7/043 with mechanical transmitting or indicating means
• CPC Class Codes: G01L 7/063 with mechanical transmitting or indicating means

Abstract

An inflatable air cell pressure transducer. The air cell has a concavity formed therein. The concavity has two edges, wherein increased pressure within the air cell causes contraction of the concavity moving the two edges closer.

Claims

1. An inflatable manometer comprising:

an air cell having a concavity formed therein, said concavity having two edges, wherein increased pressure within said air cell causes contraction of said concavity moving said two edges towards each other;

a second concavity formed in said air cell, said concavity having a first characteristic such that said concavity closes at a first pressure, said second concavity having a second characteristic such that said second concavity closes at a second pressure, said second pressure being greater than said first pressure.

2. The inflatable manometer of claim 1 wherein:

said first characteristic is width and said second characteristic is width.

3. An inflatable manometer comprising:

an air cell having a concavity formed therein, said concavity having two edges, wherein increased pressure within said air cell causes contraction of said concavity moving said two edges towards each other;

a fluid inlet and a fluid outlet coupled to said air cell, said manometer indicating a pressure differential between said fluid inlet and said fluid outlet.

4. The inflatable manometer of claim 3 wherein:

said fluid inlet and said air cell are formed from thermoplastic sheets sealed to define said fluid inlet and said air cell.