US3701277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow meter
Assignee: Sensus Spectrum LLC
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Filing: 1969-05-27
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Granted: 1972-10-31
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Expires: 1989-05-27
Abstract
Abstract A fluid flow meter having a recessed body defining a fluid measuring chamber which is open at one end and which rotatably receives a fluid driven metering rotor. A register casing containing a fluid flow register mechanism is detachably fixed to the meter body and has a bottom wall part covering the open end of the chamber. Drive magnets and follower elements respectively disposed within the chamber and the casing on opposite sides of the casing bottom wall part transmit rotation of the rotor to actuate the register mechanism. The bottom wall part is interiorly concavely contoured so that its peripheral end portion extends essentially axially and terminates in an axially directed annular edge surface on which a structure, which mounts the register mechanism, is supportingly seated. The bottom wall part is further integrally formed with a flange extending radially from its axially extending end portion so that the wall part may be secured in place by clamping the flange between the meter body and a separately formed cover part of the casing. Concentric embossments formed integral with the bottom wall part define concentric wells opening in axially opposite directions respectively into the chamber and into the interior of the casing and respectively receiving the drive magnets and driven elements. The rotor is molded as one piece with an internal protrusion that forms a thrust bearing surface for a rotor support shaft extending into the rotor hub. A meter calibrating member selectively and transversely displaceably into an accurately diametered orifice at the inlet port for the measuring chamber provides an adjustment for meter registration.
Inventors
- 👤 Richard A Mcmahon
- 👤 Winston F Z Lee
- 👤 Elmer F Painley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:35
CPC Classifications
G; G01; G01F; G01F15/00; G01F15/06; G01F15/065; G01F15/066; G01F1/00; G01F1/05; G01F1/06; G01F1/075; G01F1/0755
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
266 words
In a fluid flow meter, a body recessed to define a rotor chamber that is open at one end, said body having fluid inlet and outlet ports providing for the flow of fluid to be measured through said chamber, a metering rotor mounted in said chamber for rotation about an axis extending substantially normal to the direction of flow of fluid through said chamber, said rotor being driven by the flow of fluid through said chamber, a register mechanism, a register casing receiving said register mechanism, means detachably fixing said casing to said body, means drive connecting said rotor to said register mechanism to impart rotation of the former to actuate the latter, said casing having a bottom wall part covering said open end and delimiting both said chamber and the interior of said casing, said bottom wall part having a terminal portion disposed interiorly of said casing and terminating in an annular surface, said terminal portion extending axially of the rotational axis of said rotor in peripheral surrounding relation to said axis, said casing also including a further part formed separately of said bottom wall part and coaxially receiving said terminal portion, said further part delimiting the interior of said casing, and a structure received within said casing and mounting said mechanism, said structure being seated on said annular surface to be supported thereby, and said bottom wall part being formed with an annular flange portion extending radially from said terminal portion and being clamped between a portion of said further part and said body by said means detachably fixing said casing to said body.
Claim 2
Dependent Claim
266 words
In a fluid flow meter, a body recessed to define a rotor chamber that is open at one end, said body having fluid inlet and outlet ports providing for the flow of fluid to be measured through said chamber, a metering rotor mounted in said chamber for rotation about an axis extending substantially normal to the direction of flow of fluid through said chamber, said rotor being driven by the flow of fluid through said chamber, a register mechanism, a register casing receiving said register mechanism, means detachably fixing said casing to said body, means drive connecting said rotor to said register mechanism to impart rotation of the former to actuate the latter, said casing having a bottom wall part covering said open end and delimiting both said chamber and the interior of said casing, said bottom wall part having a terminal portion disposed interiorly of said casing and terminating in an annular surface, said terminal portion extending axially of the rotational axis of said rotor in peripheral surrounding relation to said axis, said casing also including a further part formed separately of said bottom wall part and coaxially receiving said terminal portion, said further part delimiting the interior of said casing, and a structure received within said casing and mounting said mechanism, said structure being seated on said annular surface to be supported thereby, and said bottom wall part being formed with an annular flange portion extending radially from said terminal portion and being clamped between a portion of said further part and said body by said means detachably fixing said casing to said body.
Claim 3
Dependent Claim
48 words
The fluid flow meter defined in claim 1 wherein said further part is of inverted cup-shaped configuration receiving the assembly of said structure and said mechanism and defining the side and top wall surfaces of said casing for enclosing said mechanism in cooperation with said bottom wall part.
Claim 4
Dependent Claim
33 words
The fluid flow meter defined in claim 2 wherein said further part is formed as one piece from transparent material to enable said mechanism to be viewed from the exterior of the casing.
Claim 5
Dependent Claim
65 words
The fluid flow meter defined in claim 1 wherein said means drive connecting said rotor to said register mechanism comprises drive magnet means mounted on said rotor for rotation therewith within said chamber and driven means rotatably mounted within said casing and being magnetically coupled through said bottom wall part to said drive magnet means to transmit rotation of the rotor for actuating said mechanism.
Claim 6
Dependent Claim
47 words
The fluid flow meter defined in claim 4 wherein said bottom wall part is formed with means defining two concentric recesses opening in axially opposite directions respectively into said chamber and the interior of said casing and respectively receiving said drive magnet means and said driven means.
Claim 7
Dependent Claim
96 words
The fluid flow meter defined in claim 5 wherein said recess defining means comprises a cylindrical embossment and an annular embossment both protruding into the interior of said casing, with said annular embossment peripherally surrounding said cylindrical embossment, the recess opening into said chamber being defined by said cylindrical embossment, and the recess opening into the interior of said casing being defined between said embossments and being of annular configuration, said bottom wall part beinG further formed with stiffening ribs which extend radially between and are joined to said edge surface means and said annular embossment.
Claim 8
Dependent Claim
280 words
In a fluid flow meter, a body recessed to define a rotor chamber that is open at one end, said body having fluid inlet and outlet passages to provide for the flow of fluid to be metered through said chamber, a fluid driven rotor mounted within said chamber for rotation about an axis extending substantially normal to the direction of flow of fluid through said chamber, a register mechanism, a register casing receiving said mechanism and having bottom wall part seated over said open end to provide a closure therefor, said bottom all part being formed separately of the remainder of said casing, means detachably fixing said casing on said body, coacting drive magnet and driven means respectively disposed on opposite sides of said bottom wall part and being respectively connected to said rotor and said mechanism for transmitting rotation of said rotor to actuate said register mechanism, said bottom wall part being integrally formed with a peripheral end portion extending substantially axially with respect to said axis in peripherally surrounding relation thereto and terminating in an axially directed annular end face, and means formed separately of said casing and being separably seated on said annular end face for supporting said mechanism, said bottom wall part vein further integrally formed with an annular flange portion extending radially from said end portion in peripherally surrounding relation thereto, said flange portion being disposed axially between opposing annular surfaces respectively formed on said body and a portion of a further part of said casing, said means detachably fixing said casing on said body engaging said body and said portion of said further part to clamp said annular flange portion between said annular surfaces.
Claim 9
Dependent Claim
280 words
In a fluid flow meter, a body recessed to define a rotor chamber that is open at one end, said body having fluid inlet and outlet passages to provide for the flow of fluid to be metered through said chamber, a fluid driven rotor mounted within said chamber for rotation about an axis extending substantially normal to the direction of flow of fluid through said chamber, a register mechanism, a register casing receiving said mechanism and having bottom wall part seated over said open end to provide a closure therefor, said bottom all part being formed separately of the remainder of said casing, means detachably fixing said casing on said body, coacting drive magnet and driven means respectively disposed on opposite sides of said bottom wall part and being respectively connected to said rotor and said mechanism for transmitting rotation of said rotor to actuate said register mechanism, said bottom wall part being integrally formed with a peripheral end portion extending substantially axially with respect to said axis in peripherally surrounding relation thereto and terminating in an axially directed annular end face, and means formed separately of said casing and being separably seated on said annular end face for supporting said mechanism, said bottom wall part vein further integrally formed with an annular flange portion extending radially from said end portion in peripherally surrounding relation thereto, said flange portion being disposed axially between opposing annular surfaces respectively formed on said body and a portion of a further part of said casing, said means detachably fixing said casing on said body engaging said body and said portion of said further part to clamp said annular flange portion between said annular surfaces.
Claim 10
Dependent Claim
152 words
In a fluid flow meter, a body having a rotor chamber and fluid inlet and outlet passages providing for flow of fluid to be measured through said chamber, a fluid driven metering rotor mounted within said chamber for rotation about an axis extending substantially normal to the direction of flow of fluid through said chamber, a register mechanism, a register casing mounted on said body for receiving said mechanism and having a bottom wall part, coacting drive magnet means and driven means disposed on opposite sides of said bottom wall part and being magnetically coupled through said part for imparting rotation of said rotor to actuate said mechanism, said casing having a further part formed separately of said bottom wall part and cooperating therewith to enclose said mechanism, said bottom wall and further part being respectively formed with annular flanges which are integrally and permanently joined together to hermetically seal said casing.
Claim 11
Dependent Claim
152 words
In a fluid flow meter, a body having a rotor chamber and fluid inlet and outlet passages providing for flow of fluid to be measured through said chamber, a fluid driven metering rotor mounted within said chamber for rotation about an axis extending substantially normal to the direction of flow of fluid through said chamber, a register mechanism, a register casing mounted on said body for receiving said mechanism and having a bottom wall part, coacting drive magnet means and driven means disposed on opposite sides of said bottom wall part and being magnetically coupled through said part for imparting rotation of said rotor to actuate said mechanism, said casing having a further part formed separately of said bottom wall part and cooperating therewith to enclose said mechanism, said bottom wall and further part being respectively formed with annular flanges which are integrally and permanently joined together to hermetically seal said casing.
Claim 12
Dependent Claim
39 words
The fluid flow meter defined in claim 8 wherein said further part is of inverted cup-shaped configuration, and wherein said flanges are in axially aligned abutting relation and extend radially outwardly relative to the rotational axis of said rotor.
Claim 13
Dependent Claim
30 words
The fluid flow meter defined in claim 9 comprising means clamping the assembly of said flanges against a surface of said body for detachably securing said casing to said body.
Claim 14
Dependent Claim
63 words
The fluid flow meter defined in claim 8 wherein said register mechanism is completely enclosed only by said bottom wall part and said further part, said bottom wall and further parts, upon being integrally joined together at said annular flanges, providing a unitary casing structure that enables access to the interior thereof only by unconceable destruction of one or more of said parts.
Claim 15
Dependent Claim
59 words
The fluid flow meter defined in claim 11 wherein said further part has a top wall portion and a skirt portion depending from said top wall portion and terminating at its lower end in the annular flange of said further part, the annular flange of said further part being seated on the annular flange of said bottom wall part.
Claim 16
Dependent Claim
303 words
In A fluid flow meter, a body recessed to define a rotor chamber that is open at one end, said body having fluid inlet and outlet passages providing for the flow of fluid to be measured through said chamber, a bladed fluid metering rotor rotatably mounted in said chamber about an axis extending substantially normal to the direction of flow of fluid through said chamber to be driven by the fluid flow through said chamber, a register mechanism, a register casing mounted on said body and receiving said register mechanism, said register casing having a bottom wall part and a further part formed separately of said bottom wall part, said bottom wall part covering said open end and delimiting both said chamber and the casing space receiving said register mechanism, coacting drive magnet means and driven magnet means respectively disposed on opposite sides of said bottom wall part and being magnetically coupled through said bottom wall part for transmitting rotation of said rotor to actuate said register mechanism, said body having a register casing supporting surface peripherally surrounding said open end, said bottom wall part being formed with an annular flange extending radially of the rotational axis of said rotor and overlying said supporting surface to be supported thereon, said further part being formed with a top wall portion and a skirt portion depending from said top wall portion and having at its lower end an annular flange extending radially outwardly from said skirt portion and overlying the annular flange of said bottom wall part, with the annular flange of said bottom wall part being confined between said supporting surface and the annular flange of said further part, and means engaging said body and the annular flange of said further part for rigidly securing said bottom wall and further parts to said body.
Claim 17
Dependent Claim
303 words
In A fluid flow meter, a body recessed to define a rotor chamber that is open at one end, said body having fluid inlet and outlet passages providing for the flow of fluid to be measured through said chamber, a bladed fluid metering rotor rotatably mounted in said chamber about an axis extending substantially normal to the direction of flow of fluid through said chamber to be driven by the fluid flow through said chamber, a register mechanism, a register casing mounted on said body and receiving said register mechanism, said register casing having a bottom wall part and a further part formed separately of said bottom wall part, said bottom wall part covering said open end and delimiting both said chamber and the casing space receiving said register mechanism, coacting drive magnet means and driven magnet means respectively disposed on opposite sides of said bottom wall part and being magnetically coupled through said bottom wall part for transmitting rotation of said rotor to actuate said register mechanism, said body having a register casing supporting surface peripherally surrounding said open end, said bottom wall part being formed with an annular flange extending radially of the rotational axis of said rotor and overlying said supporting surface to be supported thereon, said further part being formed with a top wall portion and a skirt portion depending from said top wall portion and having at its lower end an annular flange extending radially outwardly from said skirt portion and overlying the annular flange of said bottom wall part, with the annular flange of said bottom wall part being confined between said supporting surface and the annular flange of said further part, and means engaging said body and the annular flange of said further part for rigidly securing said bottom wall and further parts to said body.
Claim 18
Dependent Claim
39 words
The fluid flow meter defined in claim 13 wherein the annular flanges of said bottom wall and further parts seat against each other, and wherein said register mechanism is completely enclosed only by said bottom wall and further parts.
Claim 19
Dependent Claim
65 words
The fluid flow meter defined in claim 13 wherein the annular flange of said bottom wall part seats on said supporting surface, and wherein said means for securing said bottom wall and further parts to said body is a member threaded onto said body and having a flange-engaging surface, said flanges of said parts being clamped between said flange engaging surface and said supporting surface.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |