GB1164999A - Improvements relating to Silencing Means for Percussive Pneumatic Tools. - Google Patents

Improvements relating to Silencing Means for Percussive Pneumatic Tools.

Info

Publication number
GB1164999A
GB1164999A GB53996/65A GB5399665A GB1164999A GB 1164999 A GB1164999 A GB 1164999A GB 53996/65 A GB53996/65 A GB 53996/65A GB 5399665 A GB5399665 A GB 5399665A GB 1164999 A GB1164999 A GB 1164999A
Authority
GB
United Kingdom
Prior art keywords
cylinder
piston
chambers
port
silencing means
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
GB53996/65A
Inventor
Antony Dobson Barber
Michael George Adamson
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 GB53996/65A priority Critical patent/GB1164999A/en
Priority to DEH61306A priority patent/DE1299578B/en
Priority to US602967A priority patent/US3365022A/en
Priority to ES0334699A priority patent/ES334699A1/en
Publication of GB1164999A publication Critical patent/GB1164999A/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
    • B25D17/12—Arrangements of noise-damping means of exhaust silencers

Abstract

1,164,999. Percussive tools. HOLMAN BROS. Ltd. 15 Dec., 1966 [20 Dec., 1965], No. 53996/65. Heading B4C. [Also in Division F1] A pneumatic percussive tool such as a rock drill or road breaker, comprises a piston 11 reciprocable in a cylinder 12 and an exhaust silencing means including first and second expansion chambers 20, 21, the compressed air being exhausted during the working stroke into the chambers via a discharge port 15 and a transfer port 25. The expansion chambers are of accurate shape and may be cast integrally with the cylinder or made of sheet metal welded thereto or made as separate units and secured to the cylinder with a suitable seal; instead of metal the chambers may be made from a synthetic plastics material. In operation, compressed air is fed into the cylinder 12, thereby driving the piston units working stroke. As the upper surface of the piston passes the port 15, the air flows into the chamber 20 where it expands and then passes via a groove 23 in the piston and the transfer port 25 into the chamber 21 where the air flows to atmosphere via a pipe 26.
GB53996/65A 1965-12-20 1965-12-20 Improvements relating to Silencing Means for Percussive Pneumatic Tools. Expired GB1164999A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB53996/65A GB1164999A (en) 1965-12-20 1965-12-20 Improvements relating to Silencing Means for Percussive Pneumatic Tools.
DEH61306A DE1299578B (en) 1965-12-20 1966-12-15 Sound dampening device on a pneumatic impact tool
US602967A US3365022A (en) 1965-12-20 1966-12-19 Silencing means for percussive pneumatic tools
ES0334699A ES334699A1 (en) 1965-12-20 1966-12-20 Improvements in the construction of pneumatic percussion tools. (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB53996/65A GB1164999A (en) 1965-12-20 1965-12-20 Improvements relating to Silencing Means for Percussive Pneumatic Tools.

Publications (1)

Publication Number Publication Date
GB1164999A true GB1164999A (en) 1969-09-24

Family

ID=10469628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB53996/65A Expired GB1164999A (en) 1965-12-20 1965-12-20 Improvements relating to Silencing Means for Percussive Pneumatic Tools.

Country Status (4)

Country Link
US (1) US3365022A (en)
DE (1) DE1299578B (en)
ES (1) ES334699A1 (en)
GB (1) GB1164999A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138728A (en) * 1983-04-22 1984-10-31 Inst Gornogo Dela Sibirskogo O Pneumatic impact tool

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3635299A (en) * 1970-04-20 1972-01-18 Gardner Denver Co Muffler for pneumatic tool
FR2201712A5 (en) * 1972-09-28 1974-04-26 Bosch Gmbh Robert
US4327817A (en) * 1978-10-13 1982-05-04 Rensselaer Polytechnic Institute Method and apparatus for treating exhaust gases particularly for air-operated tools
US4244442A (en) * 1978-10-13 1981-01-13 Rensselaer Polytechnic Institute Method and apparatus for treating exhaust gases particularly for air-operated tools
CA1120406A (en) * 1979-02-13 1982-03-23 Stanley L. Baldwin Mufflers for percussive pneumatic machines
US5376762A (en) * 1992-09-28 1994-12-27 Ingersoll-Rand Company Muffler for a fluid-activated, percussive apparatus
US5366353A (en) * 1994-04-13 1994-11-22 Hand Kent P Air valve with bleed feature to inhibit icing
DE10241883B4 (en) * 2002-09-10 2012-06-21 Andreas Stihl Ag & Co. Hand-held implement with a mounting pin for an exhaust silencer
US7681690B2 (en) * 2007-07-13 2010-03-23 Longyear Tm, Inc. Noise abatement device for a pneumatic tool
US7735603B2 (en) * 2008-05-28 2010-06-15 Longyear Tm, Inc. Noise reducing device for a pneumatic tool
US8215449B2 (en) * 2009-12-02 2012-07-10 Longyear Tm, Inc. Muffler system for noise abatement and ice control

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2896580A (en) * 1957-05-21 1959-07-28 Atlas Copco Ab Pneumatic percussion tools
US3332504A (en) * 1964-05-18 1967-07-25 James V Lowery Impact tool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138728A (en) * 1983-04-22 1984-10-31 Inst Gornogo Dela Sibirskogo O Pneumatic impact tool

Also Published As

Publication number Publication date
ES334699A1 (en) 1967-10-16
US3365022A (en) 1968-01-23
DE1299578B (en) 1969-07-17

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees