Patent ID: 9310228
Filing Date: 2016-04-12
CPC Classification: G01L

Claim Text:
1. A compressed gas indicating device comprising: a housing comprising an outer wall, a first end, and a longitudinally opposed second end defining a hollow interior; a dividing wall positioned within said hollow interior, said dividing wall defining an inner air chamber and an outer air chamber, said inner air chamber being pneumatically connected to said outer air chamber; a first indicator sleeve disposed within said outer air chamber, proximate said first end; a second indicator sleeve disposed within said outer chamber and operably abutting said first indicator sleeve proximate said second end; a spring located within said outer air chamber and positioned between an upper surface of said second indicator sleeve and said second end; and, at least one window disposed within said outer wall; wherein said spring biases said second indicator sleeve and said first indicator sleeve towards said first end; and, wherein said first and second indicator sleeves are linearly movable such that said first indicator sleeve, in response to a presence of compressed gas within said inner chamber, is positioned to be visible through any one of said at least one window, and said second indicator sleeve, in response to a lack of compressed gas within said inner chamber, is positioned to be visible through any one of said at least one window.