US3914872A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual plug gauger
Assignee: OI Glass Inc
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Filing: 1974-10-10
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Granted: 1975-10-28
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Expires: 1994-10-10
Abstract
Abstract A plug gauger for the finish portion of containers which will gauge two separate diameters of the finish. A minimum diameter plug gauge carried by a main shaft is inserted into a finish of a container to ensure that the finish exceeds a pre-selected minimum value. The main shaft has a central longitudinal passage and transverse passages at the bottom of the longitudinal passage. A source of a gas under pressure is connected to the longitudinal passage. A corkage plug gauge is located below the transverse passages and above the minimum diameter plug gauge. A spring biases the corkage plug gauge downward toward the minimum diameter plug gauge. When the corkage plug gauge is usable to pass a diameter, whose dimension must be controlled, within the finish, the corkage plug gauge covers the transverse passages as the main shaft slides over the stationary corkage plug gauge. This causes generation of a back pressure which can be monitored to determine the condition of the diameter measured by the corkage plug gauge.
Inventors
- 👤 Kazimer A Strzala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:24
CPC Classifications
G; G01; G01B; G01B3/00; G01B3/46; G01B3/50; G01B13/00; G01B13/08; G01B13/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
254 words
In an apparatus for plug gauging the interior of the finish portion of a container, wherein a minimum diameter plug gauge is inserted into the finish of said container and a signal is generated if said plug gauge fails to enter said container, the improvement in said apparatus which comprises: a carrier head, said carrier head including a longitudinally extending passage and a recess portion adjacent to said finish and communicating with said longitudinal passage; a source of gas under pressure connected to said longitudinal passage; a main shaft, having a longitudinal passage extending partially therethrough and communicating with said longitudinal passage in said carrier head, engaged in said longitudinal passage in said carrier head, said main shaft including at least one transverse passage communicating with the exterior surface of said main shaft and said longitudinal passage therein, said minimum diameter plug gauge being attached to the end of said main shaft; an annular corkage plug gauge slideably mounted on said main shaft in a location below said transverse passage; a tubular spacer sleeve mounted on said main shaft between said minimum diameter plug gauge and said corkage plug gauge to thereby maintain a fixed minimum spacing therebetween; a spring extending between the upper portion of said recess portion and said corkage plug gauge for biasing said corkage plug gauge normally toward said minimum diameter plug gauge; and means for sensing when said corkage plug gauge has been moved against said spring bias to a position blocking said transverse passage in said main shaft.
Claim 2
Dependent Claim
254 words
In an apparatus for plug gauging the interior of the finish portion of a container, wherein a minimum diameter plug gauge is inserted into the finish of said container and a signal is generated if said plug gauge fails to enter said container, the improvement in said apparatus which comprises: a carrier head, said carrier head including a longitudinally extending passage and a recess portion adjacent to said finish and communicating with said longitudinal passage; a source of gas under pressure connected to said longitudinal passage; a main shaft, having a longitudinal passage extending partially therethrough and communicating with said longitudinal passage in said carrier head, engaged in said longitudinal passage in said carrier head, said main shaft including at least one transverse passage communicating with the exterior surface of said main shaft and said longitudinal passage therein, said minimum diameter plug gauge being attached to the end of said main shaft; an annular corkage plug gauge slideably mounted on said main shaft in a location below said transverse passage; a tubular spacer sleeve mounted on said main shaft between said minimum diameter plug gauge and said corkage plug gauge to thereby maintain a fixed minimum spacing therebetween; a spring extending between the upper portion of said recess portion and said corkage plug gauge for biasing said corkage plug gauge normally toward said minimum diameter plug gauge; and means for sensing when said corkage plug gauge has been moved against said spring bias to a position blocking said transverse passage in said main shaft.
Claim 3
Dependent Claim
47 words
The improvement of claim 1 wherein said means for sensing when said corkage plug gauge has been moved comprises: a pressure-sensitive switch, connected to said longitudinal passage in said carrier head, said pressure-sensitive switch being responsive to the back pressure signal generated by blocking said transverse passage.
Claim 4
Dependent Claim
30 words
The improvement of claim 1 wherein said carrier head further includes at least one transverse passage communicating with the outer surface of said carrier head and with said recess portion.
Claim 5
Dependent Claim
41 words
The improvement of claim 1 wherein said carrier head further includes a threaded portion in said longitudinally extending passage; and wherein said main shaft is complementarily threaded on the exterior surface thereof to engage with said threads in said carrier head.
Claim 6
Dependent Claim
60 words
The improvement of claim 1 which further includes: an annular flanged sleeve, slideably mounted on said main shaft in a location below said transverse passage, said spring extending between a flange on said flanged sleeve and the upper portion of said recess portion and said corkage plug gauge being slideably and loosely mounted on said flanged sleeve below said flange.
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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |