US4253360A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of trimming printed circuit boards
Assignee: Individual
•
Filing: 1979-05-14
•
Granted: 1981-03-03
•
Expires: 1999-05-14
Abstract
Abstract The method for trimming printed circuit boards is provided with a beveled cutting edge having a number of nonuniformly or unevenly spaced notches formed therein.
Inventors
- 👤 Gary R. Zontelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:57
CPC Classifications
H; H05; H05K; H05K13/00; H05K13/04; H05K13/0473; Y; Y10; Y10S; Y10S83/00; Y10S83/929; Y10S83/942; Y10T; Y10T83/00; Y10T83/04; Y10T83/0524; Y10T83/929; Y10T83/9372; Y10T83/9403
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
56 words
A method of trimming printed circuit boards having a plurality of leads projecting from one side comprising the steps of relatively and progressively cutting said leads in a nonuniform or unrhythmic manner by moving a knife member formed with a cutting edge against said leads, said cutting edge having a number of unevenly spaced notches therein.
Claim 2
Independent Claim
56 words
A method of trimming printed circuit boards having a plurality of leads projecting from one side comprising the steps of relatively and progressively cutting said leads in a nonuniform or unrhythmic manner by moving a knife member formed with a cutting edge against said leads, said cutting edge having a number of unevenly spaced notches therein.
Claim 3
Dependent Claim
36 words
The method of claim 1 in which said knife member comprises a cutter ring and said cutting edge is located at the periphery of said cutter ring, said cutting being effected by rotating said cutter ring.
Claim 4
Dependent Claim
23 words
The method of claim 2 in which the periphery on one side of said cutter ring is beveled to form a cutting edge.
Claim 5
Dependent Claim
34 words
The method of claim 3 in which the other side of said cutter ring is generally flat, said other side having radially-directed grooves extending to said cutting edge to form said unevenly spaced notches.
Claim 6
Dependent Claim
16 words
The method of claim 2 in which said cutter ring is rotated at a constant speed.
Claim 7
Dependent Claim
28 words
The method of claim 2 in which said cutter ring has a beveled knife edge at its periphery and said spaced notches extend radially inwardly from said edge.
Claim 8
Dependent Claim
13 words
The method of claim 6 in which said notches have unequal angles therebetween.
Claim 9
Dependent Claim
17 words
The method of claim 7 in which the closed or inner ends of said notches are curved.
Claim 10
Dependent Claim
18 words
The method of claim 7 in which said unequal angles differ from each other by at least 3°.
Claim 11
Dependent Claim
17 words
The method of claim 9 in which adjacent angles differ from each other by at least 10°.
Claim 12
Dependent Claim
15 words
The method of claim 10 in which said notches subtend an arc of approximately 2°.
References Cited (Backward Citations)
US3307442A
Cited
US3453918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |