US4586496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surgical chisel
Assignee: Waldemar Link GmbH and Co KG
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Filing: 1985-03-04
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Granted: 1986-05-06
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Expires: 2005-03-04
Abstract
Abstract A surgical chisel is formed by a flexurally rigid chisel shank and a thin, elongated chisel blade fixed at its front end, which are both displaceably guided in slideways in a chisel guide, which lends the chisel blade buckling resistance.
Inventors
- 👤 Arnold Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:16
CPC Classifications
B; B25; B25D; B25D3/00; A; A61; A61B; A61B17/00; A61B17/16; A61B17/1604; A61B17/17; A61B17/1735; A61B90/00; A61B90/03; A61B2090/033; A61B2090/036
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
78 words
A surgical chisel, comprising: a chisel shank (3) having a first end adapted to receive the impact of a hammer; an elongated chisel blade (2) coupled at a first end to a second end of said chisel shank and having a cutting edge at a second end; and a chisel guide (7) having slideways for displaceably guiding said blade and shank in a longitudinal direction so that said guide supports and adds rigidity to said blade and shank.
Claim 2
Dependent Claim
78 words
A surgical chisel, comprising: a chisel shank (3) having a first end adapted to receive the impact of a hammer; an elongated chisel blade (2) coupled at a first end to a second end of said chisel shank and having a cutting edge at a second end; and a chisel guide (7) having slideways for displaceably guiding said blade and shank in a longitudinal direction so that said guide supports and adds rigidity to said blade and shank.
Claim 3
Dependent Claim
30 words
The chisel of claim 1 wherein said guide has a sheathlike shape substantially surrounding said blade between said first and second ends, said slideways being shaped complementary to said blade.
Claim 4
Dependent Claim
24 words
The chisel of claim 1 wherein said slideways comprises first slideways shaped complementary to said blade and second slideways shaped complementary to said shank.
Claim 5
Dependent Claim
23 words
The chisel of claim 1 further comprising means for locking said guide to said chisel shank such that relative longitudinal movement is prevented.
Claim 6
Dependent Claim
127 words
A surgical chisel comprising: an elongated chisel shank (3) having a first end adapted to receive the impact of a hammer; an elongated chisel blade (2) coupled at a first end to a second end of said chisel shank and having a cutting edge at a second end; a chisel guide (7) having a first slideway completely surrounding a portion of said shank between said first and second ends of said shank and shaped complementary to said shank, and a second slideway completely surrounding a portion of said blade between said first and second ends of said blade and shaped complementary to said blade; and means for locking said guide to said chisel shank such that longitudinal movement of said shank relative to said guide is prevented.
Claim 7
Dependent Claim
127 words
A surgical chisel comprising: an elongated chisel shank (3) having a first end adapted to receive the impact of a hammer; an elongated chisel blade (2) coupled at a first end to a second end of said chisel shank and having a cutting edge at a second end; a chisel guide (7) having a first slideway completely surrounding a portion of said shank between said first and second ends of said shank and shaped complementary to said shank, and a second slideway completely surrounding a portion of said blade between said first and second ends of said blade and shaped complementary to said blade; and means for locking said guide to said chisel shank such that longitudinal movement of said shank relative to said guide is prevented.
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) | 1989-05-05 | 1989-11-04 | 1990-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-05 | 1993-11-04 | 1994-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-05 | 1997-11-04 | 1998-05-06 | $7700.00 | Window Closed / Lapsed |