US3858668A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stop arrangement for drill turbines
Assignee: CONSTUCTIONS ELECTR ET MECANIQ
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Filing: 1972-10-16
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Granted: 1975-01-07
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Expires: 1992-10-16
Abstract
Abstract Stop arrangement for drill turbines in which the fixed disks and the mobile disks are made of steel, their friction surfaces being processed by conventional methods in order to impart thereto a suitable hardness, the mobile disks being installed so as to be movable elastically in the axial direction in order to distribute the efforts among the various elements and in order to damp the shocks between the rigid friction surfaces of the said elements.
Inventors
- 👤 Jean Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:54
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/02; E21B4/003; F; F16; F16C; F16C17/00; F16C17/04; F16C2352/00; Y; Y10; Y10S; Y10S415/00; Y10S415/904
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
279 words
A stop arrangement for turbine drills comprising: a turbine drill body, a turbine drill, a shaft for driving the drill, a plurality of fixed friction elements mounted on the body of said turbine drill, means for maintaining a predetermined distance between said fixed friction elements, a plurality of mobile friction elements mounted on the drill shaft, the faces of the elements in the axial direction of the drill shaft in one of said plurality of friction elements being positioned as friction parts on the cooperating faces of the adjacent elements of the other of said plurality of friction elements, characterized in that each element of said plurality of fixed friction elements is rigidly mounted and provided with at least two friction surfaces spaced in the axial direction of the drill shaft, each element of said plurality of mobile elements being provided with only one friction surface cooperating with one of said at least two frictiOn surfaces of said fixed friction elements, means for distributing the stresses from one friction surface of all rigidly mounted elements to the cooperating friction surfaces of the associated elements and for damping the shocks between the rigid surfaces of said elements, said last mentioned means including resilient annular elements disposed between adjacent elements of said plurality of mobile elements for movably and resiliently mounting the friction surfaces thereof in the axial direction of the drill shaft said plurality of fixed friction elements and said plurality of mobile friction elements consisting of steel discs with the friction surfaces thereof treated to give an appropriate hardness, and means provided in said plurality of fixed friction elements for permitting the flow of fluid to the turbine drill.
Claim 2
Dependent Claim
279 words
A stop arrangement for turbine drills comprising: a turbine drill body, a turbine drill, a shaft for driving the drill, a plurality of fixed friction elements mounted on the body of said turbine drill, means for maintaining a predetermined distance between said fixed friction elements, a plurality of mobile friction elements mounted on the drill shaft, the faces of the elements in the axial direction of the drill shaft in one of said plurality of friction elements being positioned as friction parts on the cooperating faces of the adjacent elements of the other of said plurality of friction elements, characterized in that each element of said plurality of fixed friction elements is rigidly mounted and provided with at least two friction surfaces spaced in the axial direction of the drill shaft, each element of said plurality of mobile elements being provided with only one friction surface cooperating with one of said at least two frictiOn surfaces of said fixed friction elements, means for distributing the stresses from one friction surface of all rigidly mounted elements to the cooperating friction surfaces of the associated elements and for damping the shocks between the rigid surfaces of said elements, said last mentioned means including resilient annular elements disposed between adjacent elements of said plurality of mobile elements for movably and resiliently mounting the friction surfaces thereof in the axial direction of the drill shaft said plurality of fixed friction elements and said plurality of mobile friction elements consisting of steel discs with the friction surfaces thereof treated to give an appropriate hardness, and means provided in said plurality of fixed friction elements for permitting the flow of fluid to the turbine drill.
Claim 3
Dependent Claim
256 words
A stop arrangement for turbine drills comprising: a turbine drill body, a turbine drill, a shaft for driving the drill, comprising a plurality of fixed elements mounted on the body of said turbine drill, a first plurality of friction elements, a plurality of mobile friction elements mounted on the drill shaft, the faces of the friction elements in the axial direction of the shaft of said first plurality of friction elements being positioned on friction parts on the cooperating faces of the adjacent elements of the other plurality of friction elements, characterized in that each element of said plurality of mobile friction elements is provided with at least two friction surfaces spaced in the axial direction of the drill shaft, said first plurality of friction elements including steel pin means provided with only one friction surface cooperating with one of said at least two friction surfaces of said mobile friction elements, said steel pin means being disposed in blind drilled portions provided in said plurality of fixed elements, means for distributing the stresses from one friction surface to the cooperating friction surfaces of the associated elements and for damping shocks between the friction surfaces, said last mentioned means including resilient elements disposed between the non-friction end of said steel pin and the bottom of said blind drilled portion for movably and resiliently mounting the friction surfaces of said mobile friction elements in the axial direction of the drill shaft, and means provided in said fixed elements for permitting the flow of fluid to the turbine drill.
Claim 4
Dependent Claim
256 words
A stop arrangement for turbine drills comprising: a turbine drill body, a turbine drill, a shaft for driving the drill, comprising a plurality of fixed elements mounted on the body of said turbine drill, a first plurality of friction elements, a plurality of mobile friction elements mounted on the drill shaft, the faces of the friction elements in the axial direction of the shaft of said first plurality of friction elements being positioned on friction parts on the cooperating faces of the adjacent elements of the other plurality of friction elements, characterized in that each element of said plurality of mobile friction elements is provided with at least two friction surfaces spaced in the axial direction of the drill shaft, said first plurality of friction elements including steel pin means provided with only one friction surface cooperating with one of said at least two friction surfaces of said mobile friction elements, said steel pin means being disposed in blind drilled portions provided in said plurality of fixed elements, means for distributing the stresses from one friction surface to the cooperating friction surfaces of the associated elements and for damping shocks between the friction surfaces, said last mentioned means including resilient elements disposed between the non-friction end of said steel pin and the bottom of said blind drilled portion for movably and resiliently mounting the friction surfaces of said mobile friction elements in the axial direction of the drill shaft, and means provided in said fixed elements for permitting the flow of fluid to the turbine drill.
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) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |