NZ622751A - Anchor bolt - Google Patents

Anchor bolt

Info

Publication number
NZ622751A
NZ622751A NZ62275114A NZ62275114A NZ622751A NZ 622751 A NZ622751 A NZ 622751A NZ 62275114 A NZ62275114 A NZ 62275114A NZ 62275114 A NZ62275114 A NZ 62275114A NZ 622751 A NZ622751 A NZ 622751A
Authority
NZ
New Zealand
Prior art keywords
outer sleeve
bolt
nut
inner bolt
masonry
Prior art date
Application number
NZ62275114A
Inventor
Jon Stewart Futter Anthony
Original Assignee
Instrumentation Engineering Ltd
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 Instrumentation Engineering Ltd filed Critical Instrumentation Engineering Ltd
Priority to NZ62275114A priority Critical patent/NZ622751A/en
Publication of NZ622751A publication Critical patent/NZ622751A/en

Links

Landscapes

  • Joining Of Building Structures In Genera (AREA)

Abstract

Disclosed is an anchor bolt (1). Anchor bolts are difficult to remove from masonry, as while the part of the bolt extending from the masonry is easily removed the remainder of the bolt remains within the masonry. Over time, the part of the bolt which remains within the masonry can lead to corrosion damaging the masonry. The disclosed bolt may be more easily removed by rotating an additional nut. The anchor bolt (1) comprises an inner bolt (3); an inner bolt nut (7); outer sleeve (5) and sleeve nut (9). The inner bolt (3) has an externally threaded portion (3a) at or adjacent a first end and a flared second end (3b). The inner bolt nut (7) engages with the externally threaded portion (3a) of the inner bolt (3). The outer sleeve (5) receives the inner bolt (3). The outer sleeve (5) has an externally threaded portion at or adjacent a first end and a radially expandable portion (5c) at a second end (5b). The sleeve nut (9) engages with the externally threaded portion of the outer sleeve (5). The inner bolt (3), inner bolt nut (7) and outer sleeve (5) are arranged such that as the inner bolt (3) is rotated, the inner bolt (3) is drawn through the outer sleeve (5) and the flared second end (3b) expands the radially expandable section (5c) of the outer sleeve (5). The outer sleeve (5) and outer sleeve nut (9) are arranged such that as the outer sleeve nut (9) is rotated, the outer sleeve (5) is drawn through the outer sleeve nut (9) in a direction away from the flared second end (3b) of the inner bolt (3).
NZ62275114A 2014-03-20 2014-03-20 Anchor bolt NZ622751A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NZ62275114A NZ622751A (en) 2014-03-20 2014-03-20 Anchor bolt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NZ62275114A NZ622751A (en) 2014-03-20 2014-03-20 Anchor bolt

Publications (1)

Publication Number Publication Date
NZ622751A true NZ622751A (en) 2015-03-27

Family

ID=52706705

Family Applications (1)

Application Number Title Priority Date Filing Date
NZ62275114A NZ622751A (en) 2014-03-20 2014-03-20 Anchor bolt

Country Status (1)

Country Link
NZ (1) NZ622751A (en)

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Legal Events

Date Code Title Description
PSEA Patent sealed
RENW Renewal (renewal fees accepted)

Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 20 MAR 2019 BY KAREN FUTTER

Effective date: 20180303

RENW Renewal (renewal fees accepted)

Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 20 MAR 2020 BY JOHN FUTTER

Effective date: 20190222

RENW Renewal (renewal fees accepted)

Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 20 MAR 2021 BY JOHN FUTTER

Effective date: 20200130

RENW Renewal (renewal fees accepted)

Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 20 MAR 2022 BY JOHN FUTTER

Effective date: 20210319

RENW Renewal (renewal fees accepted)

Free format text: PATENT RENEWED FOR 1 YEAR UNTIL 20 MAR 2023 BY JOHN FUTTER

Effective date: 20220321

LAPS Patent lapsed