US3666055A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy absorbing device
Assignee: Energy Absorption Systems Inc
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Filing: 1970-05-25
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Granted: 1972-05-30
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Expires: 1990-05-25
Abstract
Abstract An energy absorbing device includes a block adapted to be mounted on a support in position to receive an impact. The block is preferably a figure of revolution about an axis disposed approximately in the direction of impact. The block is conveniently made out of vermiculite with a cement binder and usually has a hole along the axis. A wire is wrapped coaxially around the block and has turns spaced slightly apart. An impact plate extends normally across one end of the block. The block is enclosed in a deformable wrapper.
Inventors
- 👤 Grant W Walker
- 👤 Duane B Ford
- 👤 Lester N Meinzer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:49
CPC Classifications
E; E01; E01F; E01F15/00; E01F15/14; E01F15/145; E01F15/146; F; F16; F16F; F16F7/00; F16F7/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
50 words
An energy absorbing device comprising a cell including a block made up of finely divided porous material held together by an adhesive biNder, and wrapping bands relatively strong in tension extending around and in substantial contact with the exterior of said block, said bands being spaced apart from each other.
Claim 2
Dependent Claim
50 words
An energy absorbing device comprising a cell including a block made up of finely divided porous material held together by an adhesive biNder, and wrapping bands relatively strong in tension extending around and in substantial contact with the exterior of said block, said bands being spaced apart from each other.
Claim 3
Dependent Claim
21 words
An energy absorbing device as in claim 1 in which said porous material is vermiculite and said binder is Portland cement.
Claim 4
Dependent Claim
19 words
An energy absorbing device as in claim 1 in which said cell is enclosed in an expansible sheet wrapper.
Claim 5
Dependent Claim
18 words
An energy absorbing device as in claim 1 in which said block is annular in transverse cross section.
Claim 6
Dependent Claim
48 words
An energy absorbing device as in claim 1 in which said block is a right circular cylinder in exterior configuration with a right circular cylindrical hole extending axially therethrough and said wrapping bands extend helically around said block substantially from one end thereof to the other end thereof.
Claim 7
Dependent Claim
30 words
An energy absorbing device as in claim 5 in which said wrapping bands are wire turns and in which the ends of said wire turns are embedded in said block.
Claim 8
Dependent Claim
44 words
An energy absorbing device as in claim 1 in which said block is a figure of revolution about an axis, said wrapping bands form an approximate helix generated about said axis, and a plate normal to said axis abuts one end of said block.
Claim 9
Dependent Claim
15 words
An energy absorbing device as in claim 7 including a deformable envelope enclosing said block.
Claim 10
Dependent Claim
29 words
An energy absorbing device as in claim 7 in which said block has a hollow interior defined by a wall that is a figure of revolution about said axis.
Claim 11
Dependent Claim
34 words
An energy absorbing device as in claim 1 in which the spacing of said bands is sufficient to provide spaces through which fragments of said block can pass upon impact crushing of said block.
Claim 12
Dependent Claim
97 words
An energy absorbing device comprising a cell including a block of geometrical shape made up of individual particles of finely divided material temporarily held together in the block by an adhesive binder and subject to separation of said particles by impact upon said block, and a winding around and in substantial contact with said block tending to hold said block in said geometrical shape with portions of said winding being spaced apart a distance to permit passage of said particles and small portions of said block between said portions upon said separation of said particles by impact.
Claim 13
Dependent Claim
97 words
An energy absorbing device comprising a cell including a block of geometrical shape made up of individual particles of finely divided material temporarily held together in the block by an adhesive binder and subject to separation of said particles by impact upon said block, and a winding around and in substantial contact with said block tending to hold said block in said geometrical shape with portions of said winding being spaced apart a distance to permit passage of said particles and small portions of said block between said portions upon said separation of said particles by impact.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |