公开(公告)号：US2129835A

公开(公告)日：1938-09-13

申请号：US14087037

申请日：1937-05-05

Applicant: KONRAD SCHAFFLER-GLOSSL

Inventor： KONRAD SCHAFFLER-GLOSSL

IPC: F42D1/05

CPC classification number: F42D1/05

公开(公告)号：US2044666A

公开(公告)日：1936-06-16

申请号：US60604232

申请日：1932-04-18

Applicant: BURNEY HUGH W

Inventor： BURNEY HUGH W

IPC: F42D1/05

CPC classification number: F42D1/05

公开(公告)号：US1704131A

公开(公告)日：1929-03-05

申请号：US21470927

申请日：1927-08-22

Applicant: CLINTON JOHNSON CARLTON

Inventor： CLINTON JOHNSON CARLTON

IPC: F42D1/05

CPC classification number: F42D1/05 ,  Y10T307/74

公开(公告)号：US1535148A

公开(公告)日：1925-04-28

申请号：US72910624

申请日：1924-07-30

Applicant: DE HART JOSEPH BERTRAM

Inventor： DE HART JOSEPH BERTRAM

IPC: F42D1/05

CPC classification number: F42D1/05

公开(公告)号：US12044516B2

公开(公告)日：2024-07-23

申请号：US17797807

申请日：2021-01-29

Applicant: Austin Star Detonator Company

Inventor： Gimtong Teowee ,  John David Rathbun ,  Larry S. Howe ,  Walter Jacob Harders

IPC: F42D1/05 ,  E21B43/1185 ,  E21B47/07 ,  F42C19/08

CPC classification number: F42C19/0807 ,  E21B43/1185 ,  E21B47/07 ,  F42D1/05

Abstract: A detonator includes a substrate, a controller mounted to the substrate, and a sensor coupled to the controller to measure a temperature, pressure, acceleration or other environmental parameter of the detonator. The controller is configured to transmit the measured environmental parameter from the detonator to a remote master controller, execute an action in response to a value of the measured environmental parameter, and/or prevent or modify at least one detonator function in response to the value of the measured environmental parameter.

公开(公告)号：US12038264B2

公开(公告)日：2024-07-16

申请号：US17740952

申请日：2022-05-10

Applicant: GEODYNAMICS, INC.

Inventor： Brad Perry ,  Roger Archibald

IPC: F42D1/05 ,  E21B43/1185 ,  E21B43/119 ,  F42C15/42 ,  G01V11/00 ,  H02H3/20 ,  H02H9/02

CPC classification number: F42D1/05 ,  E21B43/1185 ,  E21B43/119 ,  F42C15/42 ,  G01V11/002 ,  H02H3/202 ,  H02H9/025

Abstract: A wireline release tool for downhole intervention, the tool including a housing having an electrical input and an electrical output; a pass-through switch located inside the housing and electrically connected between the electrical input and the electrical output; and a current limiter device located inside the housing and electrically connected between the electrical input and the electrical output. The pass-through switch is connected in parallel to the current limiter device, between the electrical input and the electrical output.

公开(公告)号：US20240229617A9

公开(公告)日：2024-07-11

申请号：US18360364

申请日：2023-07-27

Applicant: Schlumberger Technology Corporation

Inventor： Indranil Ghosh ,  Anjali Vijay Dhobale ,  Richard Lee Warns ,  Juan Carlos Luna Diaz ,  Andreas Hendrawinata ,  Tommy Nguyen ,  Sonia James

IPC: E21B43/117 ,  E21B43/11 ,  E21B43/114 ,  E21B43/116 ,  E21B43/1185 ,  E21B43/119 ,  F42D1/05

CPC classification number: E21B43/117 ,  E21B43/11 ,  E21B43/114 ,  E21B43/116 ,  E21B43/1185 ,  E21B43/119 ,  F42D1/05

Abstract: A detonation module for a perforation tool is described herein. The detonation module includes a detonator, a switch circuit disposed in a fluid-sealed housing and electrically coupled to the detonator, a shielding circuit coupled to the switch circuit, an annular electrical contact electrically coupled to the switch circuit, and an annular, electrically conductive, compressive member to form a compressive electrical connection with an end of a perforation unit.

公开(公告)号：US11927431B1

公开(公告)日：2024-03-12

申请号：US16602843

申请日：2019-12-10

Applicant: Northrop Grumman Systems Corporation

Inventor： James D. Lucas ,  Eric M. McDonough

IPC: F42B3/12 ,  F42C11/04 ,  F42D1/05 ,  H01L23/498 ,  H05K1/18

CPC classification number: F42B3/124 ,  F42C11/04 ,  F42D1/05 ,  H01L23/49811 ,  H05K1/181 ,  F42B3/121 ,  H05K2201/10015 ,  H05K2201/10166 ,  H05K2201/10522 ,  H05K2201/10628 ,  H05K2201/10757

Abstract: A capacitive discharge unit (CDU) for detonating an explosive in response to a control signal comprises a set of CDU components, including an exploding foil initiator (EFI), a trigger circuit, a firing capacitor, and an insulated-gate bipolar transistor (IGBT) firing switch. In various embodiments the components are arranged on a board for mechanically and electrically supporting the components in an ordered arrangement along a CDU axis where the CDU having an axial length defined by the ordered arrangement of two or more of the EFI, the firing capacitor, and the IBGT firing switch, wherein the trigger circuit is offset from the CDU axis such that the trigger circuit does not contribute to the axial length.

公开(公告)号：US11874098B2

公开(公告)日：2024-01-16

申请号：US17620506

申请日：2021-02-02

Applicant: DETNET SOUTH AFRICA (PTY) LTD

Inventor： Elmar Lennox Muller ,  Christiaan Tielman Meyer ,  Abraham Johannes Liebenberg

IPC: F42C15/42 ,  F42D1/05

CPC classification number: F42C15/42 ,  F42D1/05

Abstract: A wireless detonator assembly which includes a detonator, a receiver, a printed circuit board with a stored key which is hardwired onto the board during manufacture of the detonator assembly and control logic which allows the detonator to be fired only if the control logic extracts from a signal, received by the receiver, a reference key which is identical to the stored key.

公开(公告)号：US20230417525A1

公开(公告)日：2023-12-28

申请号：US18247466

申请日：2021-09-28

Applicant: DETNET SOUTH AFRICA (PTY) LTD

Inventor： Elmar Lennox MULLER ,  Abraham Johannes LIEBENBERG

IPC: F42D1/05

CPC classification number: F42D1/05

Abstract: A detonator assembly which includes a detonator arrangement comprising a detonator, a receiver which is responsive to a magnetic signal from a control centre and a control circuit which, in response to a signal from the receiver, regulates firing of the detonator, and which is characterised in that a fibre optic cable is connected to and extends from the detonator arrangement, and in that the detonator arrangement includes a transmitter/receiver module which is in signal communication with the fibre optic cable and the control circuit.