EP0217995A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A device that may be applied to perforating drills for the drilling of foundation holes,and the insertion and stabilization of reinforcement tubes
Assignee: Soc Paccagnella SNC Di Paccagnella Celso & Co
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Filing: 1985-11-12
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Granted: —
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Expires: 2005-11-12
Abstract
Abstract A device that may be applied to perforating drills comprising an expansion headpiece (1) with a determined rotation sense and retraction by motion inversion, that will perform holes of a diameter adapted to the reinforcement tube (of steel, cement or other), a pusher (11) having the function of causing the penetration of the reinforcement tube or the hooking simultaneously to the drilling of the hole, which will therefore be reinforced in one single stage, and a reinforcement tube (21), provided with a series of tongues (22), outwardly fixed, for stabilizing the foundation relating to flexion and torsion and assure the structural connection between the different stages of said tube. Each single component element of the device may be applied to perforating drills or in connection with one or two of the other elements, according to the requests.
Inventors
- 👤 Danilo Paccagnella
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 13:44
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/44; E21B10/26; E21B10/32; E21B10/327; E02; E02D; E02D7/00; E02D7/28; E21B17/00; E21B17/02; E21B17/08; E21B7/00; E21B7/20; E21B7/201
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
230 words
A device that may be applied to perforating drills for the drilling of foundation holes and the insertion and stabilization of reinforcement tubes, characterized in the making up elements: - an expansion headpiece (1) provided with one or more expansion blades (3) which, with the rotation of drill (2) in the perforation sense (4) and at the contact with the ground, spread apart in a position (5) and therefore enlargen the hole adapting the same to the outer diameter of the reinforcement tube to be inserted; the extraction of the drill takes place due to the rotation in a sense (6) contrary to the one of perforation, whereby the expansion blades are brought in a position (7) thus allowing the passage of the drill through the inner-diameter of the tube; - a pusher apparatus (11), placed upwardly to said drill (2), fixed to the non-rotating part thereof so that, when the drill is lowered and the pusher resting on the tube, the same will be downwardly pushed, introducing or forcing it into the provided hole according to the diameter of the same being greater, equal or smaller than the one of the outer diameter of the tube; - a reinforcement tube (21), provided with a series of vertical tongues (22), extending from said tube so as to guide the following tube (21') and to realize a connection between said tubes.
Claim 2
Independent Claim
230 words
A device that may be applied to perforating drills for the drilling of foundation holes and the insertion and stabilization of reinforcement tubes, characterized in the making up elements: - an expansion headpiece (1) provided with one or more expansion blades (3) which, with the rotation of drill (2) in the perforation sense (4) and at the contact with the ground, spread apart in a position (5) and therefore enlargen the hole adapting the same to the outer diameter of the reinforcement tube to be inserted; the extraction of the drill takes place due to the rotation in a sense (6) contrary to the one of perforation, whereby the expansion blades are brought in a position (7) thus allowing the passage of the drill through the inner-diameter of the tube; - a pusher apparatus (11), placed upwardly to said drill (2), fixed to the non-rotating part thereof so that, when the drill is lowered and the pusher resting on the tube, the same will be downwardly pushed, introducing or forcing it into the provided hole according to the diameter of the same being greater, equal or smaller than the one of the outer diameter of the tube; - a reinforcement tube (21), provided with a series of vertical tongues (22), extending from said tube so as to guide the following tube (21') and to realize a connection between said tubes.
Claim 3
Dependent Claim
49 words
A device according to claim 1, characterized in that the expansion headpiece (1) is provided with blades (3) hinged thereto in such a way that when the drill rotates in the contrary sense the same will retract so as to allow the extraction of the drill through the reinforcement.
Claim 4
Dependent Claim
27 words
A device according to claim 1, characterized in that tube (21), pushed by pusher apparatus (11), penetrates the ground delimiting the hole and/or limiting the sinking thereof.
Claim 5
Dependent Claim
57 words
-A device according to claim 1, characterized in that the second tube (21') (and in the same way all the following) will be superimposed to the first one with the tongues (22') thereof offset, and will be embraced by tongues (22) of preceding tube (21), so that a good connection between the two tubes may be obtained.
Claim 6
Independent Claim
41 words
A device according to claims 1 and 4, characterized in that the last tube (21') will be inserted with the tongues thereof placed downwardly, thus eliminating any surface projection and further improving the connection between the last stages of the foundation.
Claim 7
Independent Claim
25 words
A device according to any of the precedent claims, characterized in that elements (1, 11 and 21) may be variously coupled according to the requests.
References Cited (Backward Citations)
No citation records indexed.
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