Patent US4312256A successfully refreshed from Google Patents.
US4312256A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting tool arrangement
Assignee: Robert Bosch GmbH
•
Filing: 1980-05-07
•
Granted: 1982-01-26
•
Expires: 2000-05-07
Abstract
Abstract A cutting tool arrangement for a nibbler, wherein a support shaft with a cutting head is arranged for reciprocating movement relatively to a die, has the support shaft including an elongated portion, a narrowing portion and an end portion. The cutting head formed as a sleeve-shaped element surrounds the end portion of the shaft and a lower part of the narrowing portion of the shaft and is soldered thereto to prevent fatigue concentration stresses in a transition zone between the narrowing portion of the shaft and the cutting head.
Inventors
- 👤 Reinhold Herzog
- 👤 Helmut Roth
- 👤 Gunther Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:17
CPC Classifications
B; B23; B23D; B23D27/00; B23D27/02; B23D27/04; Y; Y10; Y10S; Y10S83/00; Y10S83/916; Y10T; Y10T83/00; Y10T83/929; Y10T83/9411; Y10T83/9447
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
105 words
A cutting tool arrangement for a nibbler having two movable one relative to the other tool elements, comprising a cutting tool including a support shaft carrying a cutting head, and a die, said support shaft being adapted for reciprocating movement with respect to said die and including an elongated portion, a narrowing intermediate portion, and an end portion, said cutting head engaging said end portion and a part of said narrowing portion adjacent said end portion and being soldered to said narrowing portion and said cutting head to thereby prevent fatigue concentration stresses at a transition zone between said cutting head and said narrowing portion.
Claim 2
Dependent Claim
105 words
A cutting tool arrangement for a nibbler having two movable one relative to the other tool elements, comprising a cutting tool including a support shaft carrying a cutting head, and a die, said support shaft being adapted for reciprocating movement with respect to said die and including an elongated portion, a narrowing intermediate portion, and an end portion, said cutting head engaging said end portion and a part of said narrowing portion adjacent said end portion and being soldered to said narrowing portion and said cutting head to thereby prevent fatigue concentration stresses at a transition zone between said cutting head and said narrowing portion.
Claim 3
Dependent Claim
27 words
The arrangement of claim 1, wherein said cutting head is a sleeve-shaped element surrounding said end portion of said shaft and said part of said narrowing portion.
Claim 4
Dependent Claim
23 words
The arrangement of claim 2, wherein said cutting head and said die are made from a material with low coefficient of thermal expansion.
Claim 5
Dependent Claim
16 words
The arrangement of claim 3, wherein said cutting head is made of a sintered metal carbide.
Claim 6
Dependent Claim
13 words
The arrangement of claim 3, wherein said metal carbide is a titanium carbide.
References Cited (Backward Citations)
US2035448A
Cited
US2364334A
Cited
US2637671A
Cited
US3064349A
Cited
US3357290A
Cited
US3903772A
Cited
US3975891A
Cited
US4158913A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-01-25 | 1985-07-27 | 1986-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-01-25 | 1989-07-27 | 1990-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-01-25 | 1993-07-27 | 1994-01-26 | $7700.00 | Window Closed / Lapsed |