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US4489613A Expired / Lapsed US ⏱️ 0.0 years remaining

Transmitting device for measuring the operating pressure in a system

Assignee: Individual
•
Filing: 1983-01-25
•
Granted: 1984-12-25
•
Expires: 2003-01-25
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Abstract

Abstract A device for sensing and monitoring the pressure variations of a pressurized fluid in a duct (13), comprises an upper body (1) coupled to a pressurized air source (5) and a lower body (2) which is coupled by means of a resilient ring, to a sleeve (12) welded to the duct (13) in which the pressure is to be monitored. A graduated scale duct (18), associated with the upper body and communicating with a needle valve (16) affords the possibility of visually monitoring the adjusted air amount. A coupling duct (19) communicates with a joining duct (20), to which a pressure detecting instrument (22) is applied and leads to an interspace (23) defined between the lower and upper bodies and communicates in turn with the inner side of a diaphragm (26) which, on the opposite side, contacts the pressurized fluid.

Inventors

  • 👤 Ennio Valletti

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 02:35
CPC Classifications
G; G01; G01L; G01L11/00; G01L11/004; G01L11/006

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 135 words
A device for measuring pressure and pressure variations of a pressurized fluid flowing through a duct (13), which device comprises an upper body and a lower body, coupled to one another by means of locking screws, said lower body being tightly connected by means of a resilient ring member, with a sleeve member welded on said duct, the upper body being coupled to a pressurized air source through a threaded coupling member, a graduated scale duct, associated with said upper body and communicating with a needle valve, said valve allowing for the air inflow into said duct to be manually adjusted, a coupling duct leading to an interspace defined between said lower and upper bodies and communicating with a diaphragm associated with said lower body, a pressure detecting instrument coupled with said graduated scale duct.
Claim 2
Independent Claim 135 words
A device for measuring pressure and pressure variations of a pressurized fluid flowing through a duct (13), which device comprises an upper body and a lower body, coupled to one another by means of locking screws, said lower body being tightly connected by means of a resilient ring member, with a sleeve member welded on said duct, the upper body being coupled to a pressurized air source through a threaded coupling member, a graduated scale duct, associated with said upper body and communicating with a needle valve, said valve allowing for the air inflow into said duct to be manually adjusted, a coupling duct leading to an interspace defined between said lower and upper bodies and communicating with a diaphragm associated with said lower body, a pressure detecting instrument coupled with said graduated scale duct.
Claim 3
Dependent Claim 62 words
A device according to claim 1, wherein said diaphragm has a lower surface, said lower body forms a discharging duct (33), said diaphragm, as it is subjected to the pressure in said duct (13), acts as a shut off member of said discharging duct (33) formed in said lower body, said discharging duct being located near said lower surface of said diaphragm.
Claim 4
Dependent Claim 39 words
A device according to claim 1, wherein said sleeve member is a sleeve and said upper and lower bodies coupled by said locking screws are rotatable within said sleeve, whereby the position of said graduated scale duct is adjustable.
Claim 5
Dependent Claim 17 words
A device according to claim 1, wherein said sleeve is of tapered configuration at one end thereof.

References Cited (Backward Citations)

CA817035A Cited
US2812662A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1987-12-25 1988-06-25 1988-12-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1991-12-25 1992-06-25 1992-12-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1995-12-25 1996-06-25 1996-12-25 $7700.00 Window Closed / Lapsed

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