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US 8,555,727 B2Granted
Integrated vacuum gauge and regulator
AssigneeDevilbiss Healthcare LLC
InventorJoel David Neatrour
Life of this patent
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Abstract
An integral regulator and gauge for a vacuum device consists of a circular regulator having the vacuum gauge inside thereof such that the regulator and gauge rotate about a common radial axis. An opening defined in a boss extending from the bottom of the regulator engages a sloped shoulder defined on the inside surface of a circular port in which the regulator is disposed, varying the size of an opening which allows air to bleed into the vacuum chamber to regulate the strength of the vacuum.
Claims20
A combination regulator and gauge for a vacuum device comprising:
- a. a vacuum gauge having a body portion and a stem portion;
- b. a regulator portion having a cylindrical body having a first portion of a first diameter tapering to a second portion of a second diameter, said vacuum gauge being disposed inside of and concentric with said regulator, said body portion of said gauge being inside said first portion of said regulator and said stem portion of said gauge being inside said second portion of said regulator;
- c. an opening, defined in said second portion of said regulator;
- and
- d. a sloped shoulder held adjacent said second portion of said regulator such that a rotation of said regulator will cause said shoulder to expose or cover varying portions of said opening.
2 more elements
A vacuum device comprising:
- a. a housing, defining an opening therein;
- b. a manifold, located within said housing, said manifold defining a circular port therein;
- c. a vacuum source, connected to said manifold.
- d. a combination regulator and gauge, said gauge being concentrically mounted within said regulator, said regulator defining a portion adapted to engage said port and rotate therein, said combination regulator and gauge extending through said opening defined in said housing;
- e. a sloped shoulder, defined on the inner surface of said port, said port defining a first inner diameter below said shoulder, said first inner diameter being the approximate diameter of the outer surface of the portion of said regulator adapted to engage said port, said port defining a second inner diameter above said shoulder, said second inner diameter being larger than said first inner diameter;
- and
- f. an opening, defined in said portion of said regulator adapted to engage said port, said opening being exposed or covered by said inner surface of said port having said first diameter as said sloped shoulder moves over said opening when said regulator is rotated with said port.
4 more elements
Dependencies are inferred from the claim text.