CA2107826A1 - Mine Roof Bolt - Google Patents

Mine Roof Bolt

Info

Publication number
CA2107826A1
CA2107826A1 CA 2107826 CA2107826A CA2107826A1 CA 2107826 A1 CA2107826 A1 CA 2107826A1 CA 2107826 CA2107826 CA 2107826 CA 2107826 A CA2107826 A CA 2107826A CA 2107826 A1 CA2107826 A1 CA 2107826A1
Authority
CA
Canada
Prior art keywords
steel cable
tapered plug
bolt
tapered
hexagonal
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
CA 2107826
Other languages
French (fr)
Other versions
CA2107826C (en
Inventor
Harvey D. Gillespie
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.)
Individual
Original Assignee
Individual
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
Priority claimed from US08/010,357 external-priority patent/US5259703A/en
Application filed by Individual filed Critical Individual
Publication of CA2107826A1 publication Critical patent/CA2107826A1/en
Application granted granted Critical
Publication of CA2107826C publication Critical patent/CA2107826C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Piles And Underground Anchors (AREA)

Abstract

A passive-type mine roof bolt is constructed of multi-strand steel cable. The bolt head is constructed of a hexagonal- or other drive-headed collar having an internally tapered funnel-shaped bore therethrough, and a tapered plug having a frusto-conical outer surface that engages the funnel-shaped inner surface of the drive collar. The tapered plug has an internal bore essentially concentric with the outer frusto-conical surface, and is adapted to fit over the steel cable, the hexagonal head drive collar fitting over the tapered plug such that pressing the tapered plug and steel cable into the inner funnel-shaped bore of the hexagonal-head drive collar causes serrations on the internal bore of the tapered plug to be urged down against, and bite into, the steel cable, resulting in a rigid hexagonal head for the cable bolt. The tapered plug is in actuality, a pair of essentially identical diametrically opposed semi-frusto-conical tapered sections that more easily compress together to bite into the multi-strand steel cable. A number of alternative embodiments enhance the bolt's retention strength in the bore hole to aid in stabilizing the rock formation.
CA 2107826 1993-01-28 1993-10-06 Mine roof bolt Expired - Lifetime CA2107826C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/010,357 US5259703A (en) 1992-03-23 1993-01-28 Mine roof bolt
US08/010,357 1993-01-28

Publications (2)

Publication Number Publication Date
CA2107826A1 true CA2107826A1 (en) 1994-07-29
CA2107826C CA2107826C (en) 1999-04-27

Family

ID=21745373

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2107826 Expired - Lifetime CA2107826C (en) 1993-01-28 1993-10-06 Mine roof bolt

Country Status (2)

Country Link
AU (2) AU669745B2 (en)
CA (1) CA2107826C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8602690B2 (en) 2008-12-23 2013-12-10 Hani Sabri Mitri Sleeved cable bolt
EP3121369A1 (en) * 2015-07-23 2017-01-25 NV Bekaert SA Cable bolts
CN116988825A (en) * 2023-09-25 2023-11-03 中国矿业大学(北京) Resistance-increasing large-deformation grouting anchor rod and application method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4140428A (en) * 1978-03-06 1979-02-20 Shakespeare Company Tie rod support for mine
CH671057A5 (en) * 1986-04-28 1989-07-31 Vsl Int Ag
FR2604744B1 (en) * 1986-10-02 1991-04-19 Francois Entreprises Cfe Sa Ci CONSTRAINED ANCHORING METHOD AND DEVICE

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8602690B2 (en) 2008-12-23 2013-12-10 Hani Sabri Mitri Sleeved cable bolt
AU2009329796B2 (en) * 2008-12-23 2014-02-06 Hani Sabri Mitri Sleeved cable bolt
EP3121369A1 (en) * 2015-07-23 2017-01-25 NV Bekaert SA Cable bolts
WO2017012994A1 (en) * 2015-07-23 2017-01-26 Nv Bekaert Sa Cable bolts
CN116988825A (en) * 2023-09-25 2023-11-03 中国矿业大学(北京) Resistance-increasing large-deformation grouting anchor rod and application method
CN116988825B (en) * 2023-09-25 2023-12-05 中国矿业大学(北京) Resistance-increasing large-deformation grouting anchor rod and application method

Also Published As

Publication number Publication date
AU678935B2 (en) 1997-06-12
CA2107826C (en) 1999-04-27
AU669745B2 (en) 1996-06-20
AU5054193A (en) 1994-08-04
AU5070896A (en) 1996-06-27

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20131007