US3929020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leak-resistent guage
Assignee: Individual
•
Filing: 1974-05-20
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Granted: 1975-12-30
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Expires: 1994-05-20
Abstract
Abstract A leak-resistent guage which is easily disassembled for repair and maintenance. It is leak-resistent by means of ''''O'''' ring seals and a gland innovatively combined to prevent leakage when subject to high external pressures or vacuum. It can be utilized to indicate air pressure by incorporating a measuring instrument of the Bourdon tube type, or other appropriate devices. The guage housing design can also be used to contain other instruments which are required to operate under high external pressures or vacuums without leaking.
Inventors
- 👤 Reino Walter Honkanen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:50
CPC Classifications
G; G01; G01L; G01L7/00; G01L7/02; G01L7/04; G01L7/043
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
351 words
A guage, adopted to contain an instrument for measuring pressurized gas or vacuum, which is subject to leaking in the ambient environment, comprising in combination, a housing having an opening for reading the instrument, one or more ports for connections to be the source to be measured, a threaded portion on the upper outer wall of the housing surrounding the opening, a horizontal surface between the inner and outer surfaces of the housing wall forming the opening, an annular groove to contain an annular sealing means on the horizontal surface, a lens of transparent material, a bezel to contain the lens threaded on the inside circumference to engage the threads on the outer housing wall and hold the lens in sealing engagement with the horizontal surface, an instrument to measure an external source containing a connector means, a portion of which is threaded at the end opposite the instrument, the length of which is dimensioned to permit assembly into the housing from the inside, and a portion adjacent to the instrument which is larger than the port opening to position the instrument inside the housing and prevent pull through, a safety vent and a pressure relief plug in the housing wall, a flat raised portion of the inside wall of the housing opposite the instrument reading openinG to position the instrument within the housing during assembly, a counterbored area or recess outwardly surrounding the port opening, an annular gland dimensioned to at least partially be contained in the counterbore or recess and having a smooth bore circumferentially dimensioned to fit the unthreaded portion of the connector means, an annular groove to contain an annular sealing means, on the face of the annular gland, an annular groove in the connector means to contain an annular sealing means, located between the threaded portion and the instrument so as to be in sealing engagement with the gland when the gland is doweled into the recessed area, a nut, threaded to engage the threaded portion of the connector and axially hold the gland in sealing engagement with the counterbore or recessed face of the housing.
Claim 2
Dependent Claim
351 words
A guage, adopted to contain an instrument for measuring pressurized gas or vacuum, which is subject to leaking in the ambient environment, comprising in combination, a housing having an opening for reading the instrument, one or more ports for connections to be the source to be measured, a threaded portion on the upper outer wall of the housing surrounding the opening, a horizontal surface between the inner and outer surfaces of the housing wall forming the opening, an annular groove to contain an annular sealing means on the horizontal surface, a lens of transparent material, a bezel to contain the lens threaded on the inside circumference to engage the threads on the outer housing wall and hold the lens in sealing engagement with the horizontal surface, an instrument to measure an external source containing a connector means, a portion of which is threaded at the end opposite the instrument, the length of which is dimensioned to permit assembly into the housing from the inside, and a portion adjacent to the instrument which is larger than the port opening to position the instrument inside the housing and prevent pull through, a safety vent and a pressure relief plug in the housing wall, a flat raised portion of the inside wall of the housing opposite the instrument reading openinG to position the instrument within the housing during assembly, a counterbored area or recess outwardly surrounding the port opening, an annular gland dimensioned to at least partially be contained in the counterbore or recess and having a smooth bore circumferentially dimensioned to fit the unthreaded portion of the connector means, an annular groove to contain an annular sealing means, on the face of the annular gland, an annular groove in the connector means to contain an annular sealing means, located between the threaded portion and the instrument so as to be in sealing engagement with the gland when the gland is doweled into the recessed area, a nut, threaded to engage the threaded portion of the connector and axially hold the gland in sealing engagement with the counterbore or recessed face of the housing.
Claim 3
Dependent Claim
16 words
A guage as in claim 1 in which the annular sealing means is an O ring.
Claim 4
Dependent Claim
20 words
A guage as in claim 1 in which the instrument is a pressure measuring instrument of the Bourdon tube type.
Claim 5
Dependent Claim
26 words
A guage as in claim 1 in which at least one port opening is in the wall of the housing adjacent to the instrument reading opening.
Claim 6
Dependent Claim
23 words
A guage as in claim 1 in which at least one port opening is in the housing wall opposite the instrument reading opening.
Claim 7
Dependent Claim
19 words
A guage as in claim 1 in which at least one boss is on the exterior of the housing.
Claim 8
Dependent Claim
18 words
A guage as in claim 6 in which the port is formed through the boss on the housing.
Claim 9
Dependent Claim
38 words
A guage as in claim 6 in which an annular groove to contain annular sealing means is on the upper face of the boss circumferentially surrounding the port opening so as to engage the face of the gland.
Claim 10
Dependent Claim
22 words
A guage as in claim 6 in which the gland is without an annular groove and is doweled into the port opening.
Claim 11
Dependent Claim
27 words
A guage as in claim 9 in which the gland is without an annular groove and the upper face of the boss is doweled into the gland.
Claim 12
Dependent Claim
15 words
A guage as in claim 6 in which the boss is without an annular groove.
Claim 13
Dependent Claim
32 words
A guage as in claim 6 in which the gland has an annular groove to contain an annular sealing means and the upper face of the boss is doweled into the gland.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-29 | 1979-06-30 | 1979-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-29 | 1983-06-30 | 1983-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-29 | 1987-06-30 | 1987-12-30 | $7700.00 | Window Closed / Lapsed |