US3672208A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Testing device for testing edges of cylinders for defects
Assignee: Coors Container Co
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Filing: 1970-09-25
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Granted: 1972-06-27
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Expires: 1990-09-25
Abstract
Abstract A testing device for testing edges of cylinders for defects comprising a flexible diaphragm member and a holder for said member through which compressed air is injected into a cylinder to be tested while the diaphragm is in cylinder sealing position relatively to the end of the cylinder. The cylinder is positioned in a pressure casing which provides an air chamber between the casing and the cylinder. Measurement of the air pressure in the chamber indicates whether any compressed air has leaked out of the cylinder due to defect in the cylinder. The diaphragm-sealing member comprises a flexible bearing wall sealing the end of the cylinder to be tested, said bearing wall becoming deformed under light pressure without being compressed and avoiding defectconcealing engagement with the cylinder side walls when in sealing contact with the cylinder and edge.
Inventors
- 👤 Ronald A Pearce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:48
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/26; G01M3/32; G01M3/3281; G01N; G01N19/00; G01N19/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
161 words
A device for testing edges of cylinders for defects comprising a. a cylinder sealing diaphragm having a flexible relatively thin flat surfaced bearing wall contacting a cylinder edge and a peripheral side wall portion and inturned flange, the bearing wall being integral with said peripheral side wall portIon and deformed under light pressure without being compressed when in contact with the cylinder end edge and avoiding defectconcealing engagement while in sealing contact with the cylinder end edge, b. the diaphragm bearing wall is provided with a bead which surrounds the opening in the diaphragm; c. a holder positioning the sealing diaphragm on the cylinder edge, d. openings in the holder and diaphragm providing a passageway for injection of compressed air into the cylinder when the diaphragm is in sealing contact with the cylinder edge, and e. means for measuring air externally of the cylinder to indicate whether any defect exists in the cylinder permitting passage of air out of the cylinder.
Claim 2
Independent Claim
161 words
A device for testing edges of cylinders for defects comprising a. a cylinder sealing diaphragm having a flexible relatively thin flat surfaced bearing wall contacting a cylinder edge and a peripheral side wall portion and inturned flange, the bearing wall being integral with said peripheral side wall portIon and deformed under light pressure without being compressed when in contact with the cylinder end edge and avoiding defectconcealing engagement while in sealing contact with the cylinder end edge, b. the diaphragm bearing wall is provided with a bead which surrounds the opening in the diaphragm; c. a holder positioning the sealing diaphragm on the cylinder edge, d. openings in the holder and diaphragm providing a passageway for injection of compressed air into the cylinder when the diaphragm is in sealing contact with the cylinder edge, and e. means for measuring air externally of the cylinder to indicate whether any defect exists in the cylinder permitting passage of air out of the cylinder.
Claim 3
Dependent Claim
26 words
The testing device defined by claim 1, in which the peripheral side wall portion and inturned flange of the sealing diaphragm are gripped by the holder.
Claim 4
Dependent Claim
37 words
The testing device defined by claim 1, in which the holder comprises an inner and an outer member, and the peripheral side wall portion and inturned flange of the sealing diaphragm are gripped between said holder members.
Claim 5
Dependent Claim
83 words
The testing device defined by claim 3, in which the inner holder member consists of a threaded neck, a flat surfaced shoulder portion extending radially from the neck, and a peripheral portion projecting into the diaphragm, and the outer holder member consists of a threaded neck engaging the neck of the inner member, a shoulder portion parallel to the shoulder portion of the inner member, and a downturned peripheral portion confining the peripheral side wall portion and inturned flange portion of the diaphragm.
Claim 6
Independent Claim
91 words
A device for testing edges of cylinders for defects comprising means for injecting air under pressure into the cylinder to be tested, and a flexible sealing diaphragm which has a peripheral portion and a relatively thin bearing wall contacting the cylinder edge, said thin bearing wall deforming under light pressure without compression, and avoiding defect-concealing contact with the cylinder while in sealing contact with the cylinder edge, said device including a two part holder which grips the peripheral portion of the sealing diaphragm and positions the diaphragm on the cylinder edge.
Claim 7
Independent Claim
91 words
A device for testing edges of cylinders for defects comprising means for injecting air under pressure into the cylinder to be tested, and a flexible sealing diaphragm which has a peripheral portion and a relatively thin bearing wall contacting the cylinder edge, said thin bearing wall deforming under light pressure without compression, and avoiding defect-concealing contact with the cylinder while in sealing contact with the cylinder edge, said device including a two part holder which grips the peripheral portion of the sealing diaphragm and positions the diaphragm on the cylinder edge.
Claim 8
Dependent Claim
73 words
The testing device defined by claim 5, which includes a pressure casing containing the cylinder to be tested and providing an air chamber between the cylinder and the casing, openings in the holder and diaphragm providing a passageway for compressed air into the cylinder, and means for measuring air in the air chamber to indicate whether any defect exists in the cylinder permitting passage of air from the cylinder to the air chamber.
References Cited (Backward Citations)
US1606486A
Cited
US2880610A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |