Patent US3728040A successfully refreshed from Google Patents.
US3728040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbodrill
Assignee: Individual
•
Filing: 1971-04-22
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Granted: 1973-04-17
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Expires: 1991-04-22
Abstract
Abstract A turbodrill for drilling wells having a turbine for the turbodrill shaft rotation together with a hydrodynamic braking unit, the stator and rotor blades of which extend in the same direction.
Inventors
- 👤 R Ioannesian
- 👤 J Ioanesian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:15
CPC Classifications
F; F03; F03B; F03B13/00; F03B13/02; E; E21; E21B; E21B4/00; E21B4/02; Y; Y10; Y10S; Y10S415/00; Y10S415/903
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
161 words
A turbodrill for drilling wells including: a casing; stators secured to said casing, the stators having blades, the blades of the stators defining guiding channels through which a drilling fluid passes; a shaft; ball bearing means on which said shaft is mounted; rotors secured to said shaft, said rotors having blades, the blades of the rotors having a direction opposite to that of the blades of said stator thereby changing the direction of fluid motion; due to which said rotor constituting with said stator a stage of a turbodrill turbine, rotates as related to said stator; and means for reducing the rotational speed of said shaft defined by further stators fixed in said turbodrill casing and further rotors secured to said shaft providing hydrodynamic braking stages said further stators and rotors having blades, the blades of said further rotors and further stators extending in the same direction, with the angles of the inlet and outlet of all blades being the same.
Claim 2
Dependent Claim
161 words
A turbodrill for drilling wells including: a casing; stators secured to said casing, the stators having blades, the blades of the stators defining guiding channels through which a drilling fluid passes; a shaft; ball bearing means on which said shaft is mounted; rotors secured to said shaft, said rotors having blades, the blades of the rotors having a direction opposite to that of the blades of said stator thereby changing the direction of fluid motion; due to which said rotor constituting with said stator a stage of a turbodrill turbine, rotates as related to said stator; and means for reducing the rotational speed of said shaft defined by further stators fixed in said turbodrill casing and further rotors secured to said shaft providing hydrodynamic braking stages said further stators and rotors having blades, the blades of said further rotors and further stators extending in the same direction, with the angles of the inlet and outlet of all blades being the same.
Claim 3
Dependent Claim
175 words
A turbodrill for drilling wells including: a casing; stators secured to said casing, the stators having blades, the blades of the stators defining guiding channels through which a drilling fluid passes; a shaft; ball bearing means on which said shaft is mounted; rotors secured to said shaft, said rotors having blades, the blades of the rotors having a direction opposite to that of the blades of said stator thereby changing the direction of fluid motion; due to which said rotor constituting with said stator a stage of a turbodrill turbine, rotates as related to said stator; and means for reducing the rotational speed of said shaft defined by further stators fixed in said turbodrill casing and further rotors secured to said shaft providing hydrodynamic braking stages in which the blades of said further rotors and further stators extend mainly in the same direction, with the blades of said stators and rotors reducing the rotational speed of said shaft being disposed at the same angles to a plane, normal to the axis of said turbodrill shaft.
Claim 4
Dependent Claim
175 words
A turbodrill for drilling wells including: a casing; stators secured to said casing, the stators having blades, the blades of the stators defining guiding channels through which a drilling fluid passes; a shaft; ball bearing means on which said shaft is mounted; rotors secured to said shaft, said rotors having blades, the blades of the rotors having a direction opposite to that of the blades of said stator thereby changing the direction of fluid motion; due to which said rotor constituting with said stator a stage of a turbodrill turbine, rotates as related to said stator; and means for reducing the rotational speed of said shaft defined by further stators fixed in said turbodrill casing and further rotors secured to said shaft providing hydrodynamic braking stages in which the blades of said further rotors and further stators extend mainly in the same direction, with the blades of said stators and rotors reducing the rotational speed of said shaft being disposed at the same angles to a plane, normal to the axis of said turbodrill shaft.
Claim 5
Dependent Claim
44 words
The turbodrill as claimed in claim 1, in which the blades of said stators and rotors, reducing the rotational speed of said shaft, are of variable height increasing proportionally to a radial distance of a blade section from the axis of said turbodrill shaft.
Claim 6
Dependent Claim
27 words
The turbodrill as claimed in claim 1, which the blades of said stators and rotors, reducing the rotational speed of said shaft, are of a constant height.
Claim 7
Dependent Claim
53 words
The turbodrill as claimed in claim 1, in which the blades of said stators and rotors, reducing the rotational speed of said shaft, are of a streamlined shape, defined by mold curves, and their middle lines being disposed at the same angle to a plane normal to the axis of said turbodrill shaft.
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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |