GB2078608A - Noise reducing shields for pneumatic tools - Google Patents

Noise reducing shields for pneumatic tools Download PDF

Info

Publication number
GB2078608A
GB2078608A GB8020204A GB8020204A GB2078608A GB 2078608 A GB2078608 A GB 2078608A GB 8020204 A GB8020204 A GB 8020204A GB 8020204 A GB8020204 A GB 8020204A GB 2078608 A GB2078608 A GB 2078608A
Authority
GB
United Kingdom
Prior art keywords
laminate
shield
outer cover
parts
gun
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.)
Withdrawn
Application number
GB8020204A
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.)
METRUBICS Ltd
Original Assignee
METRUBICS 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 METRUBICS Ltd filed Critical METRUBICS Ltd
Priority to GB8020204A priority Critical patent/GB2078608A/en
Publication of GB2078608A publication Critical patent/GB2078608A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/046—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
    • G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
    • G10K11/162—Selection of materials
    • G10K11/168—Plural layers of different materials, e.g. sandwiches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2266/00—Composition of foam
    • B32B2266/06—Open cell foam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Laminated Bodies (AREA)

Abstract

A shield for a power tool, the shield comprising a laminate including at least two layers of a resilient plastics material having an open cell structure and at least one intermediate layer of a soft dense metallic material and an outer cover of an inherently self-supporting plastics material. <IMAGE>

Description

SPECIFICATION Noise reducing shieids for pneumatic tools This invention relates to the reduction of noise of pneumatic tools such as pneumatic stapling guns and relates also to a method of making such shields. The present invention is based on the use of a laminate comprising at least two layers of polyurethane foam or other resilient plastics material having an open cell structure, separated by a layer of a soft dense metal such as lead. In a preferred method of forming the shield, such a laminate is disposed between the tool and a preformed multipartite cover of which the parts are forced together over the tool so as to compress the laminate and form it to the required shape.
In order to explain the invention more fully, reference will be made hereinafter to the accompanying drawing, which is a simplified view of a shield according to the invention.
The shield which is illustrated in the drawing is intended for use on a hand-held pneumatically operated stapling gun. The shield includes an outer cover 1 which is formed in at least two parts 2 and 3. In this particular embodiment of the invention the parts are separated along a plane extending lengthwise of the stapling gun. The outer cover is preferably made of an inherently self-supporting plastics material such as acrylonitrile butadiene styrene (ABS). The various parts of it may be pre-formed by vacuum moulding. The outer cover may be formed so as to provide between itself and the gun a gap generally ten millimetres wide so that there is space for the accommodation of an inner part of the shield.
The inner part comprises a laminate 4 of polyurethane foam of other resilient plastics material which has an open cell structure and at least one intermediate layer of a soft dense metal such a lead. In this particular example the laminate comprises two six millimetre layers 5, 6 of foam and a one millimetre intermediate layer 7 of lead sheet.
The laminate is disposed in the outer cover and then the parts of the outer cover are brought together over the gun. As those parts are forced or drawn together, the inner laminate is compressed and formed to the contours of the gun. The outer cover then may be secured to the gun by any suitable means, such as nuts and bolts passing through appropriately formed parts of the shield and the gun.
In general the laminate 4 will not be coextensive with the shield so that the blockage of exhaust and intake orifices can be avoided. The outer cover 1 may be formed with small plenums 8 and drilled with orifices 9.
1. A method of making a shield for a pneumatic stapling gun or other power tool, comprising forming in place on the tool a shield comprising a laminate of at least two layers of a plastics -material having an open cell structure and at least one intermediate layer of a soft dense metallic material.
2. A method according to claim 1 in which an outer cover is formed in at least two parts which are disposed approximately in place over the laminate and are then closed together so as to compress the laminate and form it to shape on the tool.
3. A shield for a power tool, the shield comprising a laminate including at least two layers of a resilient plastics material having an open cell structure and at least one intermediate layer of a soft dense metallic material and an outer cover of an inherently self-supporting plastics material.
4. In combination, a tool which is provided with a shield as set forth in claim 3, the outer cover having been formed in a plurality of parts which are closed together to compress the laminate.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (4)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Noise reducing shieids for pneumatic tools This invention relates to the reduction of noise of pneumatic tools such as pneumatic stapling guns and relates also to a method of making such shields. The present invention is based on the use of a laminate comprising at least two layers of polyurethane foam or other resilient plastics material having an open cell structure, separated by a layer of a soft dense metal such as lead. In a preferred method of forming the shield, such a laminate is disposed between the tool and a preformed multipartite cover of which the parts are forced together over the tool so as to compress the laminate and form it to the required shape. In order to explain the invention more fully, reference will be made hereinafter to the accompanying drawing, which is a simplified view of a shield according to the invention. The shield which is illustrated in the drawing is intended for use on a hand-held pneumatically operated stapling gun. The shield includes an outer cover 1 which is formed in at least two parts 2 and 3. In this particular embodiment of the invention the parts are separated along a plane extending lengthwise of the stapling gun. The outer cover is preferably made of an inherently self-supporting plastics material such as acrylonitrile butadiene styrene (ABS). The various parts of it may be pre-formed by vacuum moulding. The outer cover may be formed so as to provide between itself and the gun a gap generally ten millimetres wide so that there is space for the accommodation of an inner part of the shield. The inner part comprises a laminate 4 of polyurethane foam of other resilient plastics material which has an open cell structure and at least one intermediate layer of a soft dense metal such a lead. In this particular example the laminate comprises two six millimetre layers 5, 6 of foam and a one millimetre intermediate layer 7 of lead sheet. The laminate is disposed in the outer cover and then the parts of the outer cover are brought together over the gun. As those parts are forced or drawn together, the inner laminate is compressed and formed to the contours of the gun. The outer cover then may be secured to the gun by any suitable means, such as nuts and bolts passing through appropriately formed parts of the shield and the gun. In general the laminate 4 will not be coextensive with the shield so that the blockage of exhaust and intake orifices can be avoided. The outer cover 1 may be formed with small plenums 8 and drilled with orifices 9. CLAIMS
1. A method of making a shield for a pneumatic stapling gun or other power tool, comprising forming in place on the tool a shield comprising a laminate of at least two layers of a plastics -material having an open cell structure and at least one intermediate layer of a soft dense metallic material.
2. A method according to claim 1 in which an outer cover is formed in at least two parts which are disposed approximately in place over the laminate and are then closed together so as to compress the laminate and form it to shape on the tool.
3. A shield for a power tool, the shield comprising a laminate including at least two layers of a resilient plastics material having an open cell structure and at least one intermediate layer of a soft dense metallic material and an outer cover of an inherently self-supporting plastics material.
4. In combination, a tool which is provided with a shield as set forth in claim 3, the outer cover having been formed in a plurality of parts which are closed together to compress the laminate.
GB8020204A 1980-06-20 1980-06-20 Noise reducing shields for pneumatic tools Withdrawn GB2078608A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8020204A GB2078608A (en) 1980-06-20 1980-06-20 Noise reducing shields for pneumatic tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8020204A GB2078608A (en) 1980-06-20 1980-06-20 Noise reducing shields for pneumatic tools

Publications (1)

Publication Number Publication Date
GB2078608A true GB2078608A (en) 1982-01-13

Family

ID=10514197

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8020204A Withdrawn GB2078608A (en) 1980-06-20 1980-06-20 Noise reducing shields for pneumatic tools

Country Status (1)

Country Link
GB (1) GB2078608A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29520170U1 (en) * 1995-12-20 1996-02-15 Bleiindustrie Gmbh Vormals Jun Lead sheet
US7341173B1 (en) 2006-10-05 2008-03-11 Arnold John L Exhaust gas diffuser and filter system for a pneumatic nail gun

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29520170U1 (en) * 1995-12-20 1996-02-15 Bleiindustrie Gmbh Vormals Jun Lead sheet
US7341173B1 (en) 2006-10-05 2008-03-11 Arnold John L Exhaust gas diffuser and filter system for a pneumatic nail gun

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)