US4241810A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for absorbing mechanical shock
Assignee: United States Department of Energy
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Filing: 1979-08-29
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Granted: 1980-12-30
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Expires: 1999-08-29
Abstract
Abstract This invention is a comparatively inexpensive but efficient shock-absorbing device having special application to the protection of shipping and storage cylinders. In a typical application, two of the devices are strapped to a cylinder to serve as saddle-type supports for the cylinder during storage and to protect the cylinder in the event it is dropped during lifting or lowering operations. In its preferred form, the invention includes a hardwood plank whose grain runs in the longitudinal direction. The basal portion of the plank is of solid cross-section, whereas the upper face of the plank is cut away to form a concave surface fittable against the sidewall of a storage cylinder. The concave surface is divided into a series of segments by transversely extending, throughgoing relief slots. A layer of elastomeric material is positioned on the concave face, the elastomer being extrudable into slots when pressed against the segments by a preselected pressure characteristic of a high-energy impact. The compressive, tensile, and shear properties of the hardwood and the elastomer are utilized in combination to provide a surprisingly high energy-absorption capability.
Inventors
- 👤 Charles E. Newlon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:45
CPC Classifications
F; F16; F16F; F16F7/00; F16F7/003; B; B65; B65D; B65D81/00; B65D81/02; B65D81/05; B65D81/107; B65D81/113; B65D85/00; B65D85/20
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
93 words
A device for absorbing mechanical shock, comprising: a wooden member comprising a basal portion and an opposed top portion, the basal portion being formed of solid cross-section, and the top portion being formed of spaced-apart segments formed between openings in the top portion whose upper faces cooperatively define a concave surface, and an elastomeric strip superimposed on said concave surface and extrudable into the openings between said segments when forced against the segments by a pressure above a preselected value to effect deformation of said segments to a point capable of breakage thereof.
Claim 2
Independent Claim
93 words
A device for absorbing mechanical shock, comprising: a wooden member comprising a basal portion and an opposed top portion, the basal portion being formed of solid cross-section, and the top portion being formed of spaced-apart segments formed between openings in the top portion whose upper faces cooperatively define a concave surface, and an elastomeric strip superimposed on said concave surface and extrudable into the openings between said segments when forced against the segments by a pressure above a preselected value to effect deformation of said segments to a point capable of breakage thereof.
Claim 3
Dependent Claim
20 words
The device of claim 1 wherein said concave surface is fittable against a cylindrical surface extending transversely to said member.
Claim 4
Dependent Claim
20 words
The device of claim 1 wherein said member is of elongated configuration and the grain of said member extends longitudinally.
Claim 5
Dependent Claim
13 words
The device of claim 1 wherein said member is composed of a hardwood.
Claim 6
Dependent Claim
21 words
The device of claim 1 wherein said strip has a durometer hardness in the range of from about 40 to 65.
Claim 7
Independent Claim
99 words
A device for absorbing mechanical shock, comprising: an elongated wooden member having a basal portion and an opposed top portion, said basal portion being of solid cross-section and said top portion being divided into segments by transversely extending slots, the upper faces of said segments cooperatively defining a concave surface fittable against a cylindrical surface extending transversely of said member, and an elastomeric sheet superimposed on said surface and extrudable into said slots when forced against said concave surface by a pressure exceeding a preselected value to effect deformation of said segments to a point capable of breakage thereof.
Claim 8
Independent Claim
99 words
A device for absorbing mechanical shock, comprising: an elongated wooden member having a basal portion and an opposed top portion, said basal portion being of solid cross-section and said top portion being divided into segments by transversely extending slots, the upper faces of said segments cooperatively defining a concave surface fittable against a cylindrical surface extending transversely of said member, and an elastomeric sheet superimposed on said surface and extrudable into said slots when forced against said concave surface by a pressure exceeding a preselected value to effect deformation of said segments to a point capable of breakage thereof.
Claim 9
Dependent Claim
13 words
The device of claim 6 wherein said member is composed of a hardwood.
Claim 10
Dependent Claim
15 words
The device of claim 6 wherein said slots are formed with circularly expanded lower ends.
Claim 11
Dependent Claim
21 words
The device of claim 6 wherein said sheet has a durometer hardness in the range of from about 40 to 65.
Claim 12
Dependent Claim
22 words
The device of claim 6 wherein said slots lie in equally spaced planes intersecting the axis of generation for said concave surface.
Claim 13
Independent Claim
123 words
A device for absorbing mechanical shock, comprising: an elongated wood member having a basal portion and an opposed top portion; the grain of said member extending in the longitudinal direction, said basal portion being of solid cross-section and said top portion being divided into segments by transversely extending slots, the upper faces of said segments defining a concave surface fittable against a cylindrical surface extending transversely of said member, and an elastomeric sheet superimposed on said surface and extrudable into said slots when forced against said concave surface by a pressure exceeding a preselected value to effect deformation of said segments to a point capable of breakage thereof, said sheet having a durometer hardness in the range of from about 40 to 65.
Claim 14
Independent Claim
123 words
A device for absorbing mechanical shock, comprising: an elongated wood member having a basal portion and an opposed top portion; the grain of said member extending in the longitudinal direction, said basal portion being of solid cross-section and said top portion being divided into segments by transversely extending slots, the upper faces of said segments defining a concave surface fittable against a cylindrical surface extending transversely of said member, and an elastomeric sheet superimposed on said surface and extrudable into said slots when forced against said concave surface by a pressure exceeding a preselected value to effect deformation of said segments to a point capable of breakage thereof, said sheet having a durometer hardness in the range of from about 40 to 65.
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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) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |