US4076087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hole reamer
Assignee: Individual
•
Filing: 1976-06-14
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Granted: 1978-02-28
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Expires: 1996-06-14
Abstract
Abstract A hole reamer according to the invention includes a main body or support with roller cutters rigidly connected to a drill stem, and an additional support with roller cutters arranged co-axially with the main body or support. A additional support device can move along the axis of the main body and is provided with a means to effect this longitudinal movement. The main body and additional support device are adapted to drill holes of one diameter with consequent reaming thereof.
Inventors
- 👤 Vladimir Yakovlevich Chuply
- 👤 Leonty Feofanovich Vojuta
- 👤 Feofan Ilich Kondratenko
- 👤 Jury Zakharovich Poludnenko
- 👤 Adam Arsentievich Milach
- 👤 Vladimir Nikolaevich Kobozev
- 👤 Alexandr Vasilievich Turchenko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:50
CPC Classifications
E; E21; E21B; E21B7/00; E21B7/28; E21B10/00; E21B10/08; E21B10/18; E21B10/20; E21B10/26; E21B10/28
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
133 words
A hole reamer adapted to cooperate with a drill stem comprising a main body or support device with roller cutters adapted to be rigidly coupled to the drill stem; an additional body or support device with roller cutters arranged co-axially with said main body and mounted for rotary movement with said main body or support device and for relative axial movement with respect thereto along the axis of said main body; means for axially moving said additional support device relative to said main body; means for locking said additional body against axial movement relative to said main body at a predetermined axial distance therebetween, said main body and additional support device being arranged to successively operate on and destroy substantially distinct and separate portions of the face of the hole to be drilled.
Claim 2
Dependent Claim
133 words
A hole reamer adapted to cooperate with a drill stem comprising a main body or support device with roller cutters adapted to be rigidly coupled to the drill stem; an additional body or support device with roller cutters arranged co-axially with said main body and mounted for rotary movement with said main body or support device and for relative axial movement with respect thereto along the axis of said main body; means for axially moving said additional support device relative to said main body; means for locking said additional body against axial movement relative to said main body at a predetermined axial distance therebetween, said main body and additional support device being arranged to successively operate on and destroy substantially distinct and separate portions of the face of the hole to be drilled.
Claim 3
Dependent Claim
65 words
A hole reamer, as claimed in claim 1, wherein said main body has slots, and wherein said additional support device is provided with means for locking in the nature of stops and hooks coupled with pneumatic cylinders and return springs, said hooks being adapted to enter and engage said slots in said main body to lock said additional support device relative to said main body.
Claim 4
Dependent Claim
58 words
A hole reamer, as claimed in claim 1, wherein said roller cutters on said main body and additional support portions are arranged at different radial distances from said axis of rotation of said main body, whereby said roller cutters are respectively adapted to drill a hole of one diameter with subsequent reaming the resulting hole to another diameter.
Claim 5
Dependent Claim
109 words
A hole reamer, as claimed in claim 1, wherein said means for axial movement of said additional support device relative to said main body comprises telescoping sleeves; springs arranged within said sleeves, said sleeves being arranged between said main body and additional support device for successively placing the latter and said main body into operative position, said roller cutters of said additional support device being disposed in front of said roller cutters of said main body, when viewed from the bottom of the hole being formed, so that said roller cutters of said additional support device could destroy and drill a smaller diameter respective portion of the hole face.
Claim 6
Dependent Claim
65 words
A hole reamer, as claimed in claim 4, wherein said main body has slots, and wherein said additional support device is provided with means for locking in the nature of stops with hooks coupled with pneumatic cylinders and return springs, said hooks being adapted to enter and engage said slots in said main body to lock said additional support device relative to said main body.
Claim 7
Dependent Claim
36 words
A hole reamer, as claimed in claim 1, wherein said main body and additional support device are arranged to successively operate on and destroy substantially equal portions of the face of the hole to be drilled.
Claim 8
Dependent Claim
110 words
A hole reamer, as claimed in claim 1, wherein said means for axial movement of said additional support device relative to said main body comprises a hydraulic cylinder arranged between said main body and additional support device for successively placing the latter and said main body into operative position, said roller cutters of said additional support device being disposed behind said roller cutters of said main body, when viewed from the bottom of the hole being formed, so that said roller cutters of said additional support device ream the hole drilled by said roller cutters of said main body by destroying the larger diameter respective portion of the hole face.
Claim 9
Dependent Claim
57 words
A hole reamer, as claimed in claim 7, wherein said means for axial movement of said additional support device relative to said main body further comprises guide pipes connected rigidly to said main body, said additional support device cooperating with said guide pipes and being guided by the latter during axial movements relative to said main body.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1981-02-27 | 1981-08-29 | 1982-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-27 | 1985-08-29 | 1986-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-27 | 1989-08-29 | 1990-02-28 | $7700.00 | Window Closed / Lapsed |