CA2310881A1 - Shock-resistant electronic circuit assembly - Google Patents

Shock-resistant electronic circuit assembly Download PDF

Info

Publication number
CA2310881A1
CA2310881A1 CA002310881A CA2310881A CA2310881A1 CA 2310881 A1 CA2310881 A1 CA 2310881A1 CA 002310881 A CA002310881 A CA 002310881A CA 2310881 A CA2310881 A CA 2310881A CA 2310881 A1 CA2310881 A1 CA 2310881A1
Authority
CA
Canada
Prior art keywords
circuit
shock
assembly
encapsulation
enclosure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002310881A
Other languages
French (fr)
Other versions
CA2310881C (en
Inventor
Paul N. Marshall
Thomas C. Tseka
Brendan M. Walsh
James E. Fritz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Detnet South Africa Pty Ltd
Original Assignee
Ensign Bickford Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ensign Bickford Co filed Critical Ensign Bickford Co
Publication of CA2310881A1 publication Critical patent/CA2310881A1/en
Application granted granted Critical
Publication of CA2310881C publication Critical patent/CA2310881C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/12—Bridge initiators
    • F42B3/121—Initiators with incorporated integrated circuit
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/02—Details
    • H05K5/0204—Mounting supporting structures on the outside of casings

Abstract

A shock-resistant electronic circuit assembly (10) is provided in which an electronic cir-cuit is encased in an encapsulation (14) that engages a surrounding enclosure (18) in shock-dispersing contact therewith. The encapsulation may have a plurality of edges (16, 16a, 16b), fins (24) or bosses (70) that bear against the enclosure. The encapsulation may include a shock-absorbing material (14f) disposed against the enclosure to protect the circuit against vibrations and a structural support material such as a casing (14e) to protect the circuit against stress. The circuit assembly (10) may be part of a sheathed initiator assembly (55) that includes a transfer member (58) for converting shock wave energy into electrical energy for the electronic circuit, and the released energy may be converted into a detonation initiation signal.
Assembly (55) may be part of a detonator (100) that receives a non-electric initiation signal and detonates fol-lowing the delay determined by the electronic circuit. The detonator housing (112) or an op-tional sleeve (22) provides an enclosure for the assembly (55). The circuit encapsulation may include one or more bushings such as O-rings (14g, 14g') disposed about the circuit casing (14e).
CA002310881A 1999-12-06 2000-06-05 Shock-resistant electronic circuit assembly Expired - Lifetime CA2310881C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/455,548 1999-12-06
US09/455,548 US6311621B1 (en) 1996-11-01 1999-12-06 Shock-resistant electronic circuit assembly

Publications (2)

Publication Number Publication Date
CA2310881A1 true CA2310881A1 (en) 2001-06-06
CA2310881C CA2310881C (en) 2003-10-14

Family

ID=23809271

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002310881A Expired - Lifetime CA2310881C (en) 1999-12-06 2000-06-05 Shock-resistant electronic circuit assembly

Country Status (8)

Country Link
US (1) US6311621B1 (en)
EP (1) EP1106956B1 (en)
CA (1) CA2310881C (en)
DE (1) DE60024042T2 (en)
ES (1) ES2261141T3 (en)
PE (1) PE20010877A1 (en)
RU (1) RU2208760C2 (en)
ZA (1) ZA200002886B (en)

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CN113485059B (en) * 2021-07-07 2022-09-02 济南最智慧科技有限公司 Method and apparatus for ambient light rejection

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Also Published As

Publication number Publication date
US6311621B1 (en) 2001-11-06
DE60024042D1 (en) 2005-12-22
EP1106956A1 (en) 2001-06-13
CA2310881C (en) 2003-10-14
ES2261141T3 (en) 2006-11-16
ZA200002886B (en) 2001-05-28
EP1106956B1 (en) 2005-11-16
PE20010877A1 (en) 2001-10-31
DE60024042T2 (en) 2006-07-27
RU2208760C2 (en) 2003-07-20

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EEER Examination request
MKEX Expiry

Effective date: 20200605