US4442896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of underground beds
Assignee: Individual
•
Filing: 1982-07-21
•
Granted: 1984-04-17
•
Expires: 2002-07-21
Abstract
Abstract A method of preparing an underground bed for treatment. A channel is formed in the bed extending from the ground down through the bed and up to the ground. A cutting device is inserted into the channel operated to form a pathway in a substantially vertical plane.
Inventors
- 👤 Lucio V. Reale
- 👤 William R. McKay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:13
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/295; E21B29/00; E21B43/02; E21B43/04; E21B43/16; E21B43/24; E21B43/243; E21B43/247; E21B43/25; E21B43/26; E21B43/2607; E21B43/30; E21B43/305; E21C; E21C41/00; E21C41/26; E21C41/31
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
A method of preparing an underground bed for treatment that comprises: forming a channel in the bed with a drill having an attached drill string and detachably securing a cutting device to the drill string, such that said cutting device is inserted while forming the channel, the channel extending from the ground at a first point, down through the bed to a predetermined depth and up to the ground at a second point; operating the cutting device to form a pathway in a substantially vertical plane.
Claim 2
Independent Claim
86 words
A method of preparing an underground bed for treatment that comprises: forming a channel in the bed with a drill having an attached drill string and detachably securing a cutting device to the drill string, such that said cutting device is inserted while forming the channel, the channel extending from the ground at a first point, down through the bed to a predetermined depth and up to the ground at a second point; operating the cutting device to form a pathway in a substantially vertical plane.
Claim 3
Dependent Claim
24 words
A method as claimed in claim 1 in which the cutting device is a wire able to be reciprocated to cut through the bed.
Claim 4
Dependent Claim
21 words
A method as claimed in claim 1 including filling the channel as it is formed to avoid collapse of the bed.
Claim 5
Dependent Claim
18 words
A method as claimed in claim 3 in which a porous material is used to fill the channel.
Claim 6
Dependent Claim
16 words
A method as claimed in claim 4 in which the porous material is sand or gravel.
Claim 7
Dependent Claim
18 words
A method as claimed in claim 1 in which a plurality of channels are formed in the bed.
Claim 8
Dependent Claim
16 words
A method as claimed in claim 6 in which at least some of the channels intersect.
Claim 9
Dependent Claim
20 words
A method as claimed in claim 1 comprising positioning a casing in the end of the channel after its formation.
Claim 10
Dependent Claim
23 words
A method as claimed in claim 8 in which each casing is equipped with rollers to assist the motion of the cutting wire.
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) | 1987-04-17 | 1987-10-17 | 1988-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-04-17 | 1991-10-17 | 1992-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-04-17 | 1995-10-17 | 1996-04-17 | $7700.00 | Window Closed / Lapsed |