US3642998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion-inhibiting toolbox
Assignee: FREDERICK A JENNINGS
•
Filing: 1970-04-22
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Granted: 1972-02-15
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Expires: 1990-04-22
Abstract
Abstract The toolbox is preferably designed with a close-fitting cover and contains therein a carrier for a volatile corrosion inhibitor. The toolbox is preferably of injection molded synthetic polymer composition material, including a continuous hinge of the same material. The carrier in the toolbox is preferably an open-cell foamed resilient synthetic material, while the corrosion inhibitor is preferably in the form of amine nitrite crystals deposited in the foam material.
Inventors
- 👤 Frederick A Jennings
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:21
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/02; B; B25; B25H; B25H3/00; B25H3/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
27 words
The toolbox of claim 1 wherein said crystalline amine nitrites are selected from the group consisting of dicyclohexyl ammonium nitrite and diisopropyl ammonium nitrite, and mixtures thereof.
Claim 2
Dependent Claim
26 words
The toolbox of claim 1 wherein at least said walls and said bottom of said toolbox are unitarily formed of injection moldable synthetic polymer composition material.
Claim 3
Dependent Claim
27 words
The toolbox of claim 3 wherein said crystalline amine nitrites are selected from the group consisting of dicyclohexyl ammonium nitrite and diisopropyl ammonium nitrite, and mixtures thereof.
Claim 4
Dependent Claim
18 words
The toolbox of claim 3 wherein said toolbox lid is unitarily formed with said sides of said toolbox.
Claim 5
Dependent Claim
176 words
The process of inhibiting corrosion of ferrous metallic tools comprising the steps of: placing a substantially water-free resilient foamed open-cell material containing a volatile crystalline amine nitrite ferrous metallic corrosion inhibitor therein in the bottom of a toolbox; placing a tool within the toolbox so that the foam material is squeezed by the gravity load of the tool on the foam material to emit amine nitrite corrosion inhibition vapors therefrom; closing the toolbox lid to substantially enclose the interior of the toolbox so that the corrosion-inhibiting amine nitrite vapor is present around the tool in the toolbox until the toolbox lid is next opened to inhibit the corrosion of the tool between the toolbox openings; and periodically repeating the steps of placement of a tool within the toolbox to squeeze the amine nitrite corrosion inhibition vapors from the foam material and closing the toolbox lid to substantially enclose the interior of the toolbox, so that tools can be repeatedly used and, between uses, stored in the tool load produced corrosion inhibition atmosphere in the closed toolbox.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |