US3783970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sound attenuating device for a work steel or the like
Assignee: Thor Power Tool Co
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Filing: 1972-06-07
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Granted: 1974-01-08
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Expires: 1992-06-07
Abstract
Abstract A sound attenuating device for a work steel or other tool subject to impact blows during the operation thereof is disclosed, wherein a metal sleeve encircles a portion of the body of the steel and a quantity of elastomeric material is provided in the clearance between the sleeve and steel so as to fill such clearance and engage both the exterior of the steel and the interior of the sleeve.
Inventors
- 👤 I Danielson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:52
CPC Classifications
B; B25; B25D; B25D17/00; B25D17/02; B25D17/11
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
229 words
A sound attenuating device adapted to be removably mounted on a work steel or the like having an elongated body having a working end and an impact receiving end, said device comprising a tubular member adapted to encircle said body, one end of said tubular member being disposed toward the working end of said body and the other end of said tubular member being disposed toward the impact receiving end of said body when said device is mounted thereon, and an elastomeric material liner secured to the inner surface of said tubular member, the inner surface of said liner defining an opening through said device of generally the same cross sectional shape as the cross sectional shape of said body so that said liner is in substantially complete area contact with said body when said device is mounted thereon, at least a portion of said opening being of smaller cross section than the cross section of said body so that said liner compressively engages said body when mounted thereon, said opening tapering inwardly the full length of said tubular member from said other end of said tubular member toward said one end of said tubular member, whereby the taper of said opening facilitates mounting of said device on said body and the compression of the elastomeric material of said liner serves to releasably retain said device on said body.
Claim 2
Dependent Claim
229 words
A sound attenuating device adapted to be removably mounted on a work steel or the like having an elongated body having a working end and an impact receiving end, said device comprising a tubular member adapted to encircle said body, one end of said tubular member being disposed toward the working end of said body and the other end of said tubular member being disposed toward the impact receiving end of said body when said device is mounted thereon, and an elastomeric material liner secured to the inner surface of said tubular member, the inner surface of said liner defining an opening through said device of generally the same cross sectional shape as the cross sectional shape of said body so that said liner is in substantially complete area contact with said body when said device is mounted thereon, at least a portion of said opening being of smaller cross section than the cross section of said body so that said liner compressively engages said body when mounted thereon, said opening tapering inwardly the full length of said tubular member from said other end of said tubular member toward said one end of said tubular member, whereby the taper of said opening facilitates mounting of said device on said body and the compression of the elastomeric material of said liner serves to releasably retain said device on said body.
Claim 3
Dependent Claim
82 words
The sound attenuating device of claim 1, further characterized in that at least a portion diverges radially outwardly toward said one end of said tubular member, said diverging inner surface portion causing elastomeric material underlying said radially outwardly diverging wall surface to be additionally compressed by an amount proportional to the extent of axial movement of said tubular member toward the working end of said steel, whereby axial movement of said tubular member toward saId working end of said steel is resisted.
Claim 4
Dependent Claim
59 words
The sound attenuating device of claim 1, further characterized in that and the inner surface of the opening in said elastomeric material is provided with at least one compression relief groove into which the elastomeric material may deform, said groove limiting the compression of said elastomeric material to a predetermined value when said device is mounted on said body.
Claim 5
Dependent Claim
29 words
The sound attenuating device of claim 3, further characterized in that said groove is sized so that the compression of said elastomeric material does not exceed about 25 percent.
Claim 6
Dependent Claim
54 words
The sound attenuating device of claim 3, further characterized in that said body is non-circular in cross section and has at least one corner edge extending lengthwise thereof, and said compression relief groove is located in said elastomeric material so as to be in substantial radial alignment with said corner edge of said body.
Claim 7
Dependent Claim
46 words
The sound attenuating device of claim 5, further characterized in that said body is provided with a plurality of said corner edges, and the inner surface of said elastomeric material is provided with a plurality of said relief grooves corresponding to the number of said edges.
Claim 8
Dependent Claim
18 words
The sound attenuating device of claim 1, further characterized in that said elastomeric material comprises natural gum rubber.
Claim 9
Dependent Claim
134 words
A sound attenuating device for a work steel or the like having an elongated body, said body having a working end and an impact receiving end and retaining structure intermediate said ends, said retaining structure being adapted to be engaged by latching structure carried by an associated impacting device, said device comprising a tubular member adapted to encircle said body and to be positioned thereon closely adjacent to said retaining structure, and an elastomeric material liner on the inner surface of said tubular member and adapted to compressively engage said body when said device is mounted thereon, a portion of said tubular member and said elastomeric material being removed to permit the latching structure of said associated impacting device to engage said retaining structure and thereby releasably retain said steel in said impacting device.
Claim 10
Dependent Claim
134 words
A sound attenuating device for a work steel or the like having an elongated body, said body having a working end and an impact receiving end and retaining structure intermediate said ends, said retaining structure being adapted to be engaged by latching structure carried by an associated impacting device, said device comprising a tubular member adapted to encircle said body and to be positioned thereon closely adjacent to said retaining structure, and an elastomeric material liner on the inner surface of said tubular member and adapted to compressively engage said body when said device is mounted thereon, a portion of said tubular member and said elastomeric material being removed to permit the latching structure of said associated impacting device to engage said retaining structure and thereby releasably retain said steel in said impacting device.
Claim 11
Dependent Claim
54 words
The sound attenuating device of claim 8, further characterized in that said tubular member has at least one opening in the side wall thereof to facilitate injection of said elastomeric material into said clearance, and said opening is provided in said tubular member in diametrically spaced relation with respect to the removed portion thereof.
Claim 12
Dependent Claim
27 words
The sound attenuating device of claim 9, further characterized in that a plurality of axially spaced openings are provided in said side wall of said tubular member.
Claim 13
Dependent Claim
70 words
The sound attenuating device of claim 8, further characterized in that a recess is provided in the inner surface of said elastomeric material opposite from the removed portion of said tubular member, said recess preventing said elastomeric material on the side of said tubular member opposite from the removed portion thereof from exerting an outward thrust force on said side of said tubular member and skewing thereof on said body.
Claim 14
Dependent Claim
30 words
The sound attenuating device of claim 11, further characterized in that the area of said recess is substantially equal to the area of the removed portion of said elastomeric material.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |