US3789664A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid flow range indicating apparatus
Assignee: Individual
•
Filing: 1971-08-27
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Granted: 1974-02-05
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Expires: 1991-08-27
Abstract
Abstract A device utilizing a variable area flowmeter combined with a vertical concentric cylinder having a piston therein which is rigidly attached to the plummet of the variable area flowmeter. Fluid pressure upstream of the plummet is ported to the top of the piston and fluid pressure downstream from the plummet is ported to the bottom of the piston. Ports selectively placed in the cylinder wall feed pressurized fluid to indicating gauges as means of sensing the relative position of the piston, thereby indicating the flow rate range.
Inventors
- 👤 J Bozek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:51
CPC Classifications
G; G01; G01F; G01F1/00; G01F1/05; G01F1/20; G01F1/22
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
234 words
A device to remotely indicate that the flow rate is above or below a certain rate of flow; comprising, a body, through which the fluid being measured flows, including a first section which is a variable area flowmeter housing having an inlet at the bottom and an outlet at the top for the flowing fluid being measured, and including a second section being a cylindrical coaxial extension from said first section; and a weighted member, freely reciprocating up and down in said body in response to said fluid flow rate, including a plummet member disposed within said first section and a piston portion disposed within said second section to form a piston in a cylinder; and, conduit means for providing fluid pressure from the said body outlet to the extremity of the said cylindrical coaxial extension; and, conduit means for providing fluid pressure from the said body inlet to the oppssit extremity of the said coaxial extension; and at least one port in the cylindrical coaxial extension leading to the outside and being situated tp read the fluid pressure downStream of the said plummet member when the piston portion is on one side of this port and to read the upstream pressure of the said plummet member when the piston portion is on the other side of this port; and a fluid light conduit leading from each of said ports to a pressure indicator.
Claim 2
Independent Claim
234 words
A device to remotely indicate that the flow rate is above or below a certain rate of flow; comprising, a body, through which the fluid being measured flows, including a first section which is a variable area flowmeter housing having an inlet at the bottom and an outlet at the top for the flowing fluid being measured, and including a second section being a cylindrical coaxial extension from said first section; and a weighted member, freely reciprocating up and down in said body in response to said fluid flow rate, including a plummet member disposed within said first section and a piston portion disposed within said second section to form a piston in a cylinder; and, conduit means for providing fluid pressure from the said body outlet to the extremity of the said cylindrical coaxial extension; and, conduit means for providing fluid pressure from the said body inlet to the oppssit extremity of the said coaxial extension; and at least one port in the cylindrical coaxial extension leading to the outside and being situated tp read the fluid pressure downStream of the said plummet member when the piston portion is on one side of this port and to read the upstream pressure of the said plummet member when the piston portion is on the other side of this port; and a fluid light conduit leading from each of said ports to a pressure indicator.
Claim 3
Independent Claim
180 words
A device for remotely indicating a change in the rate of fluid flow; comprising, a variable area flow meter of the type having a weighted body vertically moveable responsive to the rate of fluid flow, and said weighted body including vertically extending rod and a piston; and, a vertical housing, secured to said variable area flow meter, in which said piston may freely slide in the normal manner of a piston in a cylinder; and, a conduit means providing a passageway for the inlet fluid to the variable area flow meter to be fed to one side of the said piston; and, a conduit means providing a passageway for the outlet fluid from the variable area flow meter to be fed to the other side of the said piston; and, a port in the wall of said housing located between the extreme movements of travel of the piston in the normal operation of the flow meter; and, a fluid pressure indicating device remotely located from the variable area flow meter joined to said port by means of a fluid conduit.
Claim 4
Independent Claim
180 words
A device for remotely indicating a change in the rate of fluid flow; comprising, a variable area flow meter of the type having a weighted body vertically moveable responsive to the rate of fluid flow, and said weighted body including vertically extending rod and a piston; and, a vertical housing, secured to said variable area flow meter, in which said piston may freely slide in the normal manner of a piston in a cylinder; and, a conduit means providing a passageway for the inlet fluid to the variable area flow meter to be fed to one side of the said piston; and, a conduit means providing a passageway for the outlet fluid from the variable area flow meter to be fed to the other side of the said piston; and, a port in the wall of said housing located between the extreme movements of travel of the piston in the normal operation of the flow meter; and, a fluid pressure indicating device remotely located from the variable area flow meter joined to said port by means of a fluid conduit.
Claim 5
Dependent Claim
31 words
A device for remotely indicating a change in the rate of fluid flow; as described in claim 2 wherein said variable area flowmeter is the plummet in a tapered tube type.
Claim 6
Dependent Claim
31 words
A device for remotely indicating a change in the rate of fluid flow; as described in claim 2 wherein said variable area flowmeter is the piston in a slotted cylinder type.
Claim 7
Dependent Claim
32 words
A device for remotely indicating the change in the rate of fluid flow; as described in claim 2 wherein the said variable area flowmeter is the tapered plug in an orifice type.
Claim 8
Dependent Claim
182 words
A remote indicating fluid flow meter of the variable area type; comprising, a base provided with an opening for fluid inlet; and an upperly extending outwardly tapering vertical tube mounted on said base; and an outlet cap on the top of said tapering tube having an extension vertically upward and coaxial with said tapered tube for providing a cylinder of the same length as the tapered tube; and, a weighted plummet including a head disposed within said tapered tube and a piston disposed within said vertical cylinder joined by a rigid member; and, means for closing the top of said cylinder; and, a conduit for providing fluid passageway from the inlet side of said variable area flow meter to the top of said vertical cylinder; and, a conduit for providing fluid passageway from the outlet side of said variable area flow meter to the bottom of said vertical cylinder; and, a port leading from the inside of said vertical cylinder located between the extremities of travel of said piston in said vertical cylinder; and, means for reading the pressure at this port.
Claim 9
Dependent Claim
182 words
A remote indicating fluid flow meter of the variable area type; comprising, a base provided with an opening for fluid inlet; and an upperly extending outwardly tapering vertical tube mounted on said base; and an outlet cap on the top of said tapering tube having an extension vertically upward and coaxial with said tapered tube for providing a cylinder of the same length as the tapered tube; and, a weighted plummet including a head disposed within said tapered tube and a piston disposed within said vertical cylinder joined by a rigid member; and, means for closing the top of said cylinder; and, a conduit for providing fluid passageway from the inlet side of said variable area flow meter to the top of said vertical cylinder; and, a conduit for providing fluid passageway from the outlet side of said variable area flow meter to the bottom of said vertical cylinder; and, a port leading from the inside of said vertical cylinder located between the extremities of travel of said piston in said vertical cylinder; and, means for reading the pressure at this port.
Claim 10
Dependent Claim
32 words
The remote indicating fluid flow meter as described in claim 6 wherein said conduit for providing fluid from said inlet to the top of said cylinder is disposed internal to said plummet.
Claim 11
Dependent Claim
38 words
The remote indicating fluid flowmeter of claim 6 wherein said conduit for providing fluid from said inlet to the top of said cylinder is an external tube leading from said inlet to the top of said vertical cylinder.
References Cited (Backward Citations)
US2941401A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |