Patent US3751080A successfully refreshed from Google Patents.
US3751080A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connecting rod manufacturing
Assignee: Caterpillar Inc
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Filing: 1971-01-15
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Granted: 1973-08-07
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Expires: 1991-01-15
Abstract
Abstract High quality connecting rods and similar machine components comprised of an assembly of two clamped together parts are manufactured from tough heat treated high carbon steel, or the like, according to a manufacturing method of reduced cost. Essentially all machining of the component is conducted on an integral piece prior to its being divided into the two separate parts by fracturing along a frangible zone effected by electron beam bombardment. The resulting irregular mating surfaces of the respective parts have substantial resistance to relative sliding upon clamping of the parts together.
Inventors
- 👤 J Bailey
- 👤 D Zook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:21
CPC Classifications
B; B23; B23D; B23D31/00; B23D31/002; B23D31/003; F; F16; F16C; F16C9/00; F16C9/04; F16C9/045; F16B; F16B2200/00; F16B2200/63; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49229; Y10T29/49288; Y10T29/49291; Y10T403/00; Y10T403/16; Y10T403/70; Y10T403/7075; Y10T74/00; Y10T74/21; Y10T74/2142; Y10T74/2162
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
A machine component comprising an assembly of at least two parts of high quality metal with each part having a parting line extending across the same, said parting line extending into each of the parts a predetermined depth equal to the depth of penetration of an impinging high energy electron beam and extending around the periphery of each of said parts and having an overall continuously smooth regularly undulating configuration, a stress concentrating notch having an apex contiguous with said parting lines when said parts are brought together and radiating above and below said line to facilitate and insure the fracturing along said line, holes disposed through said parting line, and fasteners disposed therein for securing said parts together.
Claim 2
Dependent Claim
119 words
A machine component comprising an assembly of at least two parts of high quality metal with each part having a parting line extending across the same, said parting line extending into each of the parts a predetermined depth equal to the depth of penetration of an impinging high energy electron beam and extending around the periphery of each of said parts and having an overall continuously smooth regularly undulating configuration, a stress concentrating notch having an apex contiguous with said parting lines when said parts are brought together and radiating above and below said line to facilitate and insure the fracturing along said line, holes disposed through said parting line, and fasteners disposed therein for securing said parts together.
Claim 3
Dependent Claim
13 words
The machine component of claim 1 wherein said component is a connecting rod.
Claim 4
Dependent Claim
13 words
The machine component of claim 1 wherein said component is a track link.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |