US4399849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quality control process
Assignee: Individual
•
Filing: 1981-07-09
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Granted: 1983-08-23
•
Expires: 2001-07-09
Abstract
Abstract The invention provides a quality control process for lumber-cutting operations. It normally includes the following steps: (1) treating, with a normally invisible indicator, a portion of the lumber to be cut; (2) recording the physical properties of the portion of lumber; (3) commingling the treated, recorded portion with the remainder of the lumber; (4) performing cutting operations on the lumber; (5) imposing conditions on the lumber that will render the indicator visible on the treated portion; and (6) comparing the cut pieces of the treated, recorded portion with the precut record to determine the efficiency of the cutting operations.
Inventors
- 👤 Karol L. Nowakowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:44
CPC Classifications
B; B27; B27G; B27G1/00; B27M; B27M1/00; B27M1/08; G; G07; G07C; G07C3/00; G07C3/14; Y; Y10; Y10T; Y10T83/00; Y10T83/162; Y10T83/173; Y10T83/175; Y10T83/505
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
59 words
A quality control process for lumber-cutting operations comprising: treating lumber to be cut with a normally invisible indicator; recording the physical properties of the lumber to be cut; cutting the lumber; rendering the indicator visible on the treated, recorded lumber; and comparing the cut, treated lumber with the recorded physical properties to determine the efficiency of the cutting operations.
Claim 2
Dependent Claim
59 words
A quality control process for lumber-cutting operations comprising: treating lumber to be cut with a normally invisible indicator; recording the physical properties of the lumber to be cut; cutting the lumber; rendering the indicator visible on the treated, recorded lumber; and comparing the cut, treated lumber with the recorded physical properties to determine the efficiency of the cutting operations.
Claim 3
Dependent Claim
82 words
A quality control process for lumber-cutting operations, wherein the process comprises: treating, with a normally invisible indicator, a portion of the lumber to be cut; recording the physical properties of the portion of lumber; commingling the treated, recorded portion with the remainder of the lumber; performing cutting operations on the lumber; rendering the indicator visible on the treated, recorded portion; comparing the cut pieces of the treated, recorded portion with the recorded physical properties to determine the efficiency of the cutting operations.
Claim 4
Dependent Claim
82 words
A quality control process for lumber-cutting operations, wherein the process comprises: treating, with a normally invisible indicator, a portion of the lumber to be cut; recording the physical properties of the portion of lumber; commingling the treated, recorded portion with the remainder of the lumber; performing cutting operations on the lumber; rendering the indicator visible on the treated, recorded portion; comparing the cut pieces of the treated, recorded portion with the recorded physical properties to determine the efficiency of the cutting operations.
Claim 5
Dependent Claim
54 words
The process of claim 1 or 2 wherein said treating step comprises applying a first aqueous solution, the first solution being normally invisible, and wherein said step of rendering the indicator visible comprises applying a second aqueous solution to the treated, recorded lumber, the second solution being one which renders the first solution visible.
Claim 6
Dependent Claim
21 words
The process of claim 3 wherein the first solution is a phthalein solution and the second solution is an alkali solution.
Claim 7
Dependent Claim
23 words
The process of claim 3 wherein the first solution is a lead nitrate solution and the second solution is a potassium iodide solution.
Claim 8
Dependent Claim
40 words
The process of claim 1 or 2 wherein said treating step comprises applying a normally invisible ultraviolet-sensitive substance, and wherein said step of rendering the indicator visible comprises subjecting the lumber to ultraviolet light to render the ultraviolet-sensitive substance visible.
References Cited (Backward Citations)
US2089413A
Cited
US2137463A
Cited
US2161205A
Cited
US2086745A
Cited
US2228033A
Cited
US3360337A
Cited
US3955502A
Cited
US3780777A
Cited
US3848646A
Cited
US4070194A
Cited
US4283975A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-08-22 | 1987-02-21 | 1987-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-22 | 1991-02-21 | 1991-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-22 | 1995-02-21 | 1995-08-23 | $7700.00 | Window Closed / Lapsed |