Charles P Brunson

US Patent:

52514803, Oct 12, 1993

Filed:

Jun 2, 1992

Appl. No.:

7/892291

Inventors:

Charles P. Brunson - Montgomery AL
Thierry Swinson - Wetumpka AL

Assignee:

Schlumberger Industries, Inc.

International Classification:

G01F 1510

US Classification:

73253

Abstract:

An improved drive shaft for a positive displacement type water meter includes a flexible spring arm formed on one end of the shaft for engaging the drive spindle of a nutating disk measuring element disposed within a water meter. The other end of the drive shaft is connected to a magnetic drive which, in turn, is magnetically coupled to a conventional mechanical register. Under normal conditions, the nutating disk measuring element and drive spindle oscillate in the water meter at a rate proportional to water meter flow. The drive spindle engages the spring arm of the drive shaft causing the drive shaft and magnet to rotate. The magnet is coupled through the water meter casing to a second magnet in the register. Rotation of the second magnet is used to drive the mechanical register to register water consumption. In the event the first magnet within the meter casing becomes frozen to the casing because of external freezing conditions, the drive spindle will snap past the flexible spring arm.

US Patent:

60792817, Jun 27, 2000

Filed:

Jan 23, 1998

Appl. No.:

9/012316

Inventors:

Henri Oszajca - Macon, FR
Charles Brunson - Tallassee AL

Assignee:

Schlumberger Industries, S.A. - Montrouge

International Classification:

G01F 105

US Classification:

7386179

Abstract:

A single-jet liquid meter comprises a body in which a measurement chamber of substantially cylindrical shape is disposed. The chamber is fitted with a spinner having a longitudinal axis XX' and provided with blades, a liquid feed tube and a liquid discharge tube connected to the body and in alignment on an axis YY' that intersects axis XX' perpendicularly. A housing is disposed in the body around the periphery of the spinner and includes at least two slots respectively facing the feed tube and the discharge tube. The slots are designed to inject and eject the liquid flow in an inclined manner relative to the alignment axis of the tubes. At least one slot faces the feed tube and presents, to the flow of liquid coming from said tube, a shaped surface that progressively increases the speed of the flow.