US3761068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shock load disperser
Assignee: University of South Carolina
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Filing: 1970-10-09
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Granted: 1973-09-25
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Expires: 1990-10-09
Abstract
Abstract Method and apparatus for minimizing or eliminating damage to a system by mechanical impact. The method comprises minimizing the effects of a shock load by propagating the individual Fourier components of the stress waves associated with the load at different velocities over a short distance. The apparatus of the invention comprises a specially arranged or contoured body wherein the surface boundary causes the incident angle of the individual Fourier components to continuously vary over the distance of wave propagation. The method and apparatus is provided for specific uses such as automobile bumpers, automobile dashboards, suspension systems, ship construction, particularly submarines to minimize shock load damage, cargo handling and in building foundation construction to minimize or eliminate shock damage such as by earthquakes.
Inventors
- 👤 N Suh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:17
CPC Classifications
F; F16; F16F; F16F7/00
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
135 words
A device for minimizing stress waves applied to a structure comprising: a body for dispersing stress waves, said dispersing body having a first end and a second end, at least one end being secured to a structure, the first end adapted to receive stress waves applied in the direction of dispersion of said stress waves through said second end and transmit the stress waves through said dispersing body and means for applying said stress waves in the direction of dispersion of said stress waves through said second end, said dispersing body constructed in such form and arranged in such manner that the surface boundary of said dispersing body causes the incident angle of the individual wave components of stress received to vary continuously over the distance of dispersion of said waves within said dispersing body.
Claim 2
Independent Claim
135 words
A device for minimizing stress waves applied to a structure comprising: a body for dispersing stress waves, said dispersing body having a first end and a second end, at least one end being secured to a structure, the first end adapted to receive stress waves applied in the direction of dispersion of said stress waves through said second end and transmit the stress waves through said dispersing body and means for applying said stress waves in the direction of dispersion of said stress waves through said second end, said dispersing body constructed in such form and arranged in such manner that the surface boundary of said dispersing body causes the incident angle of the individual wave components of stress received to vary continuously over the distance of dispersion of said waves within said dispersing body.
Claim 3
Dependent Claim
40 words
The device of claim 1 wherein the impact energy receiving and stress wave dispersing body is a coil tangentially mounted on one end to said structure, the other end of said coil being available to receive any impact energy applied.
Claim 4
Dependent Claim
12 words
The device of claim 1 wherein said coil is a helical coil.
Claim 5
Dependent Claim
43 words
The device of claim 1 wherein the impact energy receiving and stress wave dispersing body comprises a plurality of coils each tangentially mounted on one end to said structure, the other end of said coils being available to receive any impact energy applied.
Claim 6
Dependent Claim
11 words
The device of claim 4 wherein said coils are helical coils.
Claim 7
Dependent Claim
31 words
The device of claim 1 wherein the stress wave dispersing body comprises a coil, and an impact receiving member, said coil being tangentially mounted between said structure and said receiving member.
Claim 8
Dependent Claim
12 words
The device of claim 6 wherein said coil is a helical coil.
Claim 9
Dependent Claim
37 words
The device of claim 1 wherein the stress dispersing bodY comprises a plurality of coils each tangentially mounted on one end to said structure and each tangentially mounted on its other end to an impact receiving member.
Claim 10
Dependent Claim
11 words
The device of claim 8 wherein said coils are helical coils.
Claim 11
Dependent Claim
19 words
The device of claim 1 wherein said receiving and dispersing body is a coil having a continuously varying radius.
Claim 12
Dependent Claim
10 words
The device of claim 6 wherein said coil is helical.
Claim 13
Independent Claim
64 words
The method of dispersing individual Fourier components of stress waves associated with impact energy at different velocities over a short distance comprising transmission of said energy through a finite body of such shape and arranged in such manner that the incident angle of the individual wave component of said stress, at the surface boundary, of the body, varies continuously over the distance of dispersing.
Claim 14
Independent Claim
64 words
The method of dispersing individual Fourier components of stress waves associated with impact energy at different velocities over a short distance comprising transmission of said energy through a finite body of such shape and arranged in such manner that the incident angle of the individual wave component of said stress, at the surface boundary, of the body, varies continuously over the distance of dispersing.
Claim 15
Dependent Claim
58 words
In a system which is or may be subjected to a shock load, the method of minimizing the effect of a shock load to said system comprising transmission of said shock load through a finite body and dispersing the individual Fourier components of the stress waves associated with the shock load at different velocities over a short distance.
Claim 16
Dependent Claim
58 words
In a system which is or may be subjected to a shock load, the method of minimizing the effect of a shock load to said system comprising transmission of said shock load through a finite body and dispersing the individual Fourier components of the stress waves associated with the shock load at different velocities over a short distance.
Claim 17
Dependent Claim
82 words
A shock isolation system comprising three components, two of said components being cooperatively joined by the third component wherein said system any shock load applied to either of said joined components is transmitted through said third component to the other component, said third component comprising a body of such construction that the individual Fourier components of the stress waves associated with said shock load transmitted therethrough are dispersed at different velocities over the transmission length of the body of said third component.
Claim 18
Dependent Claim
82 words
A shock isolation system comprising three components, two of said components being cooperatively joined by the third component wherein said system any shock load applied to either of said joined components is transmitted through said third component to the other component, said third component comprising a body of such construction that the individual Fourier components of the stress waves associated with said shock load transmitted therethrough are dispersed at different velocities over the transmission length of the body of said third component.
Claim 19
Dependent Claim
17 words
The shock isolation system of claim 14 wherein the third component is a tangentially loaded coil member.
Claim 20
Dependent Claim
14 words
The coil member of claim 15 wherein said coil has a continuously varying radius.
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) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |