US4145800A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of repairing coated workpieces
Assignee: Hoechst AG
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Filing: 1978-04-20
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Granted: 1979-03-27
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Expires: 1998-04-20
Abstract
Abstract Defective sites in the interior enamel coating of an enameled container are repaired. To this end, a bore is provided in the defective site; a sleeve is inserted in the bore; a screw bolt with two threaded ends is passed through the sleeve; a seal is slipped over the threaded end portion of the screw bolt which reaches into the container; a cap nut is tightened thereonto; a cup spring and lock nut are slipped over the threaded end portion of the screw bolt which extends outwardly from the container; and the cup spring and lock nut are tightened by means of a cap nut.
Inventors
- 👤 Manfred Scholz
- 👤 Lothar Strie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:40
CPC Classifications
B; B23; B23P; B23P6/00; B23P6/04; Y; Y10; Y10S; Y10S411/00; Y10S411/915; Y10T; Y10T29/00; Y10T29/49; Y10T29/49718; Y10T29/49732; Y10T29/49734; Y10T29/49735; Y10T29/49739; Y10T29/49741
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
100 words
A method of repairing defective sites in the interior enamel coating of an enameled container which comprises: providing a bore in the defective site; inserting a sleeve in the bore; passing a screw bolt with two threaded ends through the sleeve; slipping a seal over the threaded end portion of the screw bolt which reaches into the container; tightening a cap nut thereonto; slipping a cup spring and a lock nut over the threaded end portion of the screw bolt which extends outwardly from the container; and tightening the cup spring and lock nut by means of a cap nut.
Claim 2
Independent Claim
100 words
A method of repairing defective sites in the interior enamel coating of an enameled container which comprises: providing a bore in the defective site; inserting a sleeve in the bore; passing a screw bolt with two threaded ends through the sleeve; slipping a seal over the threaded end portion of the screw bolt which reaches into the container; tightening a cap nut thereonto; slipping a cup spring and a lock nut over the threaded end portion of the screw bolt which extends outwardly from the container; and tightening the cup spring and lock nut by means of a cap nut.
Claim 3
Dependent Claim
16 words
The method as claimed in claim 1, wherein a two-piece sleeve is inserted in the bore.
Claim 4
Dependent Claim
14 words
The method as claimed in claim 1, wherein the sleeve has a control bore.
Claim 5
Dependent Claim
19 words
The method as claimed in claim 1, wherein the lock nut is sealed off by means of a packing.
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) | 1982-03-26 | 1982-09-25 | 1983-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-26 | 1986-09-25 | 1987-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-26 | 1990-09-25 | 1991-03-27 | $7700.00 | Window Closed / Lapsed |