GB1284881A - Pneumatic breaker steels - Google Patents

Pneumatic breaker steels

Info

Publication number
GB1284881A
GB1284881A GB3928268A GB3928268A GB1284881A GB 1284881 A GB1284881 A GB 1284881A GB 3928268 A GB3928268 A GB 3928268A GB 3928268 A GB3928268 A GB 3928268A GB 1284881 A GB1284881 A GB 1284881A
Authority
GB
United Kingdom
Prior art keywords
core
aug
bore
steels
cavity
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.)
Expired
Application number
GB3928268A
Inventor
Antony Dobson Barber
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.)
Holman Brothers Ltd
Original Assignee
Holman Brothers 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 Holman Brothers Ltd filed Critical Holman Brothers Ltd
Priority to GB3928268A priority Critical patent/GB1284881A/en
Publication of GB1284881A publication Critical patent/GB1284881A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/11—Arrangements of noise-damping means

Abstract

1284881 Percussive tool bits HOLMAN BROS Ltd 18 Aug 1969 [16 Aug 1968] 39282/68 Heading B4C A tool bit 10, for use in a pneumatic breaker, comprises a tubular body 11 having a bore 12 containing a core 18 integral with, or attached to a working tip 13 and at least one cavity between the core 18 and body 10 containing sounddamping material 22. The sound-damping material may be lead-shot or sand and its containing cavity may,be annular. The body 11 is hexagonal in cross-section. The core may have portions along its length filling the bore and providing several annular compartments instead of the one shown.
GB3928268A 1968-08-16 1968-08-16 Pneumatic breaker steels Expired GB1284881A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3928268A GB1284881A (en) 1968-08-16 1968-08-16 Pneumatic breaker steels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3928268A GB1284881A (en) 1968-08-16 1968-08-16 Pneumatic breaker steels

Publications (1)

Publication Number Publication Date
GB1284881A true GB1284881A (en) 1972-08-09

Family

ID=10408716

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3928268A Expired GB1284881A (en) 1968-08-16 1968-08-16 Pneumatic breaker steels

Country Status (1)

Country Link
GB (1) GB1284881A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2440815A1 (en) * 1978-07-12 1980-06-06 Fagersta Ab HOLLOW METAL OBJECT, DAMPED AGAINST NOISE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2440815A1 (en) * 1978-07-12 1980-06-06 Fagersta Ab HOLLOW METAL OBJECT, DAMPED AGAINST NOISE

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Legal Events

Date Code Title Description
414F Notice of opposition given (sect. 14/1949)
414E Application relinquished (sect. 14/1949)
CSNS Application of which complete specification have been accepted and published, but patent is not sealed