Device for extracting drilling sludge and the use thereof

Patent metadata

Field	Value
Publication number	US-12358091-B2
Application number	US-202017437644-A
Country	US
Kind code	B2
Filing date	Mar 11, 2020
Priority date	Mar 21, 2019
Publication date	Jul 15, 2025
Grant date	Jul 15, 2025

Abstract

A device for extracting drilling sludge for use at difficult to access locations on a building site includes a main body. The main body has a cavity on a lower side of the main body and a drilling sludge that is disposed in the cavity during a use of the device is extractable from the cavity by a suction device. The main body also has an extraction opening which opens into the cavity.

First claim

What is claimed is:

1. A device for extracting drilling sludge for use at difficult to access locations on a building site, comprising:
a main body;
wherein the main body has a cavity on a lower side of the main body, wherein the cavity is formed by a first recess defined by the main body, wherein the first recess is open on a lower side of the main body and the first recess is closed on an upper side of the first recess by a base area of the main body;
wherein the main body has an extraction opening which is positioned at an outer lateral edge of the cavity, opens into a lateral side of the cavity, and passes through top and bottom surfaces of the main body laterally offset from the first recess;
wherein the remainder of the main body does not include any openings through the top surface or base area of the main body that open vertically into the first recess; and
wherein a drilling sludge that is disposed in the cavity during a use of the device is extractable from the cavity by a suction device connected to the extraction opening.

2. The device as claimed in claim 1 , wherein the main body is a foam.

3. The device as claimed in claim 1 , wherein a first portion of the lower side of the main body includes the base area and wherein a second portion of the lower side of the main body does not include the base area.

4. The device as claimed in claim 1 , wherein the base area is circular.

5. The device as claimed in claim 1 , wherein the lower side of the main body is flat and wherein the extraction opening slopes in relation to the lower side.

6. The device as claimed in claim 1 , wherein a centering aid is disposed on an upper side of the main body.

7. The device as claimed in claim 1 further comprising lugs disposed on respective sides of the device.

8. The device as claimed in claim 1 , wherein the device has a width in a range of from 5 to 25 cm.

9. The device as claimed in claim 1 further comprising a marking on the device.

10. The device as claimed in claim 1 , wherein the main body has side faces and wherein the main body has a dimension such that a sealing effect is produced between the side faces of the main body and a floor rail of a drywall during the use of the device.

11. The device as claimed in claim 10 , wherein the main body has a second recess on the lower side of the main body.

12. The device as claimed in claim 1 ,
wherein a centering aid for placement of a core drill is disposed on the top surface of the main body;

wherein the centering aid disposed on the top surface of the main body is in a form of a target and comprises a central point which is at equal distances from side faces of the main body and concentric circles which are disposed around the central point of the centering aid on the top surface of the main body and which each correspond to a respective standardized drill bit diameter.

Assignees

• Hilti Ag

Inventors

• Barbier Lionel
• Franz Stefan
• Holzmeier Georg
• Mazur Matthias
• Fally Paul
• Sever Eduard

Classifications

• E21B21/015

  Means engaging the bore entrance, e.g. hoods for collecting dust · CPC title

• E21B21/011

  Dust eliminating or dust removing while drilling · CPC title

• E21B21/01

  Arrangements for handling drilling fluids or cuttings outside the borehole, e.g. mud boxes · CPC title

• B23Q3/183

  Centering devices · CPC title

• B23Q11/0046 Primary

  by sucking · CPC title