PRESSURE INDICATOR

• US 3,680,523 A
• Filed: 10/28/1970
• Issued: 08/01/1972
• Est. Priority Date: 10/28/1970
• Status: Expired due to Term

• Current Assignee: Thomas Gaskins
• Original Assignee: Thomas Gaskins
• Inventors: Gaskins, Thomas
• Primary Examiner(s): Woodiel, Donald O.
• Application Number:
  US05/084,606
• Time in Patent Office: 643 Days
• Field of Search: 73/146.8,146.3 340/58 116/34R
• US Class Current: 116/34.00R
• CPC Class Codes: B60C 23/0496 Valve stem attachments positioned outside of the tyre chamber

Abstract

A pressure indicator suitable for use with a device containing a fluid under pressure generally consisting of a movable means including a chamber communicable with the fluid under pressure, operable responsive to a predetermined pressure within the chamber for urging the movable means into a predetermined orientation, and biasing means cooperable with the movable means for urging the movable means out of the predetermined orientation when the pressure in the chamber is below the predetermined pressure.

Claims

1. In an inflatable tire having a valve including a valve stem provided with a fluid passageway communicating with the interior of said tire, a valve seat provided in said passageway and a valve element engageable with said valve seat, a device for indicating the pressure in said tire comprising movable means including a chamber communicable with said passageway, operable responsive to a predetermIned pressure within said tire for urging said movable means into a predetermined orientation, said movable means comprising a flexible, inflatable enclosure means defining said chamber, secured to a base portion of said valve stem, having a passageway intercommunicating said chamber and said first mentioned passageway of said valve stem, biasing means cooperable with said movable means for urging said movable means out of said predetermined orientation when the pressure in said tire falls below a predetermined amount, said biasing means comprising a rigid arm member pivotally connected to said base portion and secured to said enclosure means at a point spaced from the pivotal connection thereof, and a spring interconnecting said base portion and said arm member.

2. In an inflatable tire having a valve including a valve stem provided with a fluid passageway communicating with the interior of said tire, a valve seat provided in said passageway and a valve element engageable with said valve seat, a device for indicating the pressure in said tire according to claim 1 wherein said base portion includes stops engageable by said arm member for limiting the travel of said arm member between predetermined limits.

3. In an inflatable tire having a valve including a valve stem provided with a fluid passageway communicating with the interior of said tire, a valve seat provided in said passageway and a valve element engageable with said valve seat, a device for indicating the pressure of said tire according to claim 1 including an alarm system having means operable responsive to a predetermined position of said arm member for actuating said alarm system.