US4540056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutter assembly
Assignee: WATERJET INTERNATIONAL Inc
•
Filing: 1984-05-03
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Granted: 1985-09-10
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Expires: 2004-05-03
Abstract
Abstract A drill bit with multiple fluid jet cutting nozzles designed so that the drill bit workface including the cutters is a separate piece from the drill bit body that houses the fluid jet nozzle orifice mounts. The cutter assembly protects the nozzle housing from rapid wear and it can be easily removed from the nozzle housing without disturbing or removing any of the nozzle orifice mounts.
Inventors
- 👤 Thomas A. O'Hanlon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:26
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/62; E21B10/46; E21B10/58; E21B10/60
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
169 words
A high pressure, non-percussive fluid jet cutting drill bit, the bit comprising a housing, the housing including a cylindrical body having a peaked proximal section and a distal section adapted to threadingly engage a drill rod, a fluid passage extending through the body, a plurality of branches communicating with the fluid passage and extending without the peaked proximal section, a complimentary cup-like cutter assembly demountably enveloping the peaked proximal section and extending towards the distal section, the cup-like cutter assembly having a peaked work face and a plurality of apertures, a plurality of nozzles disposed in the branches and adjacent to the apertures, the common contacting surfaces of the cup-like cutter assembly and cylindrical body in tight non-threaded registry, a cutter affixed to the cup-like cutter assembly, and a securing member extending through the side of the cup-like cutter assembly and into the side of the housing so as to secure the cup-like cutter assembly to the housing and to maintain a concentric alignment of passage, nozzle and aperture.
Claim 2
Dependent Claim
169 words
A high pressure, non-percussive fluid jet cutting drill bit, the bit comprising a housing, the housing including a cylindrical body having a peaked proximal section and a distal section adapted to threadingly engage a drill rod, a fluid passage extending through the body, a plurality of branches communicating with the fluid passage and extending without the peaked proximal section, a complimentary cup-like cutter assembly demountably enveloping the peaked proximal section and extending towards the distal section, the cup-like cutter assembly having a peaked work face and a plurality of apertures, a plurality of nozzles disposed in the branches and adjacent to the apertures, the common contacting surfaces of the cup-like cutter assembly and cylindrical body in tight non-threaded registry, a cutter affixed to the cup-like cutter assembly, and a securing member extending through the side of the cup-like cutter assembly and into the side of the housing so as to secure the cup-like cutter assembly to the housing and to maintain a concentric alignment of passage, nozzle and aperture.
Claim 3
Dependent Claim
19 words
The bit according to claim 1 wherein the securing member is threaded and recessed in the cup-like cutter assembly.
Claim 4
Dependent Claim
28 words
The bit according to claim 1 wherein the cutter is a band extending from the side of the cutting assembly to slightly past the peak of the workface.
Claim 5
Dependent Claim
28 words
The bit according to claim 1 wherein the diameter of the passage ranges from about two times the diameter of the nozzle to about 0.10 inch (0.25 cm).
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |