US3781048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Impact absorbing device for bumpers
Assignee: Nissan Motor Co Ltd
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Filing: 1972-04-17
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Granted: 1973-12-25
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Expires: 1992-04-17
Abstract
Abstract The deformation of an impact absorbing device as caused when the device is subjected to an impact is restrained in a predetermined direction so that the device is capable of properly operating even though localized force or forces are imparted to the device. The impact absorbing device is made up of resilient spring means, a pair of support members holding the resilient spring means therebetween, and a pair of slide plates which project perpendicularly inwardly from the support members and which are clamped together in a manner to be slidable on each other so as to be moved in opposite directions when the resilient spring means is subjected to a compressive stress and accordingly the spaced support members are moved toward each during a condition in which the device is encountering an impact. The device is usually combined with a fender to make up a bumper for vehicles.
Inventors
- 👤 M Oguma
- 👤 M Kurosaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:52
CPC Classifications
B; B60; B60R; B60R19/00; B60R19/02; B60R19/24; B60R19/26; B60R19/28; B60R19/36; B60R2019/266
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
353 words
An impact absorbing device comprising: a. A pair of support members arranged in spaced relationship, said support members having wall portions with inner faces thereon, and with said respective inner faces being disposed in facing relationship; b. Means defining an elongated aperture in the respective wall portions of each of said support means; c. A pair of slide plates disposed on each of said respective wall portions, each of said slide plates having a plate portion thereof projecting perpendicularly from its associated inner face on said wall portion toward, but, when the device is in a rest position, with a leading end thereof terminating short of, the inner face of the other wall portion, each plate portion of said slide plates being disposed so that said plate portion is in alignment with said elongated aperture in said wall portion opposite it, said plate portion of said pair of sliding plates, as so disposed, lying in side by side relationship for at least a portion therealong, each of said plate portions having an elongated slot defined therein and with said respective slots extending in a direction perpendicular to its said associated wall portion of said support member, and with said slots in said respective plate portions being in side by side alignment as thus disposed; d. A pair of clamping plates disposed to overlie said pair of slide plates in the area where said plate portions of said slide plates are in side by side relationship, said clamping plates having connecting means extending therebetween and through said aligned elongated slots in said respective plate portions; e. Resilient means confined between the said inner surfaces of said respective support members and encompassing the assembled pair of slide plates and clamping plates, whereby when forces are applied to one of said support members tending to move it towards the other support member, said resilient means is compressed in a direction perpendicular to said inner faces, as said slide plates slide over each other in a guide path, and said leading ends of said plate portions are moved through said respective elongated apertures in said support members.
Claim 2
Dependent Claim
353 words
An impact absorbing device comprising: a. A pair of support members arranged in spaced relationship, said support members having wall portions with inner faces thereon, and with said respective inner faces being disposed in facing relationship; b. Means defining an elongated aperture in the respective wall portions of each of said support means; c. A pair of slide plates disposed on each of said respective wall portions, each of said slide plates having a plate portion thereof projecting perpendicularly from its associated inner face on said wall portion toward, but, when the device is in a rest position, with a leading end thereof terminating short of, the inner face of the other wall portion, each plate portion of said slide plates being disposed so that said plate portion is in alignment with said elongated aperture in said wall portion opposite it, said plate portion of said pair of sliding plates, as so disposed, lying in side by side relationship for at least a portion therealong, each of said plate portions having an elongated slot defined therein and with said respective slots extending in a direction perpendicular to its said associated wall portion of said support member, and with said slots in said respective plate portions being in side by side alignment as thus disposed; d. A pair of clamping plates disposed to overlie said pair of slide plates in the area where said plate portions of said slide plates are in side by side relationship, said clamping plates having connecting means extending therebetween and through said aligned elongated slots in said respective plate portions; e. Resilient means confined between the said inner surfaces of said respective support members and encompassing the assembled pair of slide plates and clamping plates, whereby when forces are applied to one of said support members tending to move it towards the other support member, said resilient means is compressed in a direction perpendicular to said inner faces, as said slide plates slide over each other in a guide path, and said leading ends of said plate portions are moved through said respective elongated apertures in said support members.
Claim 3
Dependent Claim
48 words
An impact absorbing device according to claim 1, wherein said connecting means includes at least two sets of a bolt and nut tightly connecting said clamping plates to each other through said slots in said slide plates and confining said slide plates in slidable engagement with each other.
Claim 4
Dependent Claim
29 words
An impact absorbing device according to claim 2, wherein each of said bolts has a stem which is sized to be smaller than a width of said elongated slots.
Claim 5
Dependent Claim
29 words
An impact absorbing device according to claim 2, in which said at least two sets of a bolt and nut are located at a predetermined spacing from each other.
Claim 6
Dependent Claim
32 words
An impact absorbing device according to claim 1 in which said resilient means comprises a coiled compression spring which is seated at its ends on the inner faces of said support members.
Claim 7
Dependent Claim
17 words
An impact absorbing device according to claim 1, in which said resilient means comprises a rubber spring.
Claim 8
Dependent Claim
28 words
An impact absorbing device according to claim 1, in which said resilient means is maintained under a preloaded condition when the device is held in the rest condition.
Claim 9
Dependent Claim
18 words
An impact absorbing device according to claim 1, in which said slide plates are made of spring steel.
Claim 10
Dependent Claim
258 words
A bumper for a vehicle, comprising a fender and a suitable number of impact absorbing devices each of which comprises resilient means which is compressible when subjected to a compressive stress, a pair of support members which are held in engagement with both ends of said resilient means for supporting the resilient means therebetween one of said support members being fast on said fender and the other being connected to the body structure of said vehicle, each of said support members having an elongated aperture formed therein, a pair of slide plates respectively projecting perpendicularly from inner faces of said support members and terminating at spacings from the opposite support members, each of said slide plates being formed with an elongated slot which extends perpendicularly to the associated support member, said slide plates having their leading end portions in alignment with said elongated apertures and being partly superposed on each other so that said elongated slots form a continuous elongated opening extending intermediate between said support members, and fastening means clamping said slide plates together and holding the slide plates stationary relative to said support members when the impact absorbing device is held in a rest condition, said support members being moved toward each other to cause said resilient means to be contracted in a direction perpendicular to said support members and said fender and to cause said slide plates to move until they have their leading end portions projecting outwardly from the opposite support members through said elongated apertures when said fender is subjected to an impact.
Claim 11
Dependent Claim
258 words
A bumper for a vehicle, comprising a fender and a suitable number of impact absorbing devices each of which comprises resilient means which is compressible when subjected to a compressive stress, a pair of support members which are held in engagement with both ends of said resilient means for supporting the resilient means therebetween one of said support members being fast on said fender and the other being connected to the body structure of said vehicle, each of said support members having an elongated aperture formed therein, a pair of slide plates respectively projecting perpendicularly from inner faces of said support members and terminating at spacings from the opposite support members, each of said slide plates being formed with an elongated slot which extends perpendicularly to the associated support member, said slide plates having their leading end portions in alignment with said elongated apertures and being partly superposed on each other so that said elongated slots form a continuous elongated opening extending intermediate between said support members, and fastening means clamping said slide plates together and holding the slide plates stationary relative to said support members when the impact absorbing device is held in a rest condition, said support members being moved toward each other to cause said resilient means to be contracted in a direction perpendicular to said support members and said fender and to cause said slide plates to move until they have their leading end portions projecting outwardly from the opposite support members through said elongated apertures when said fender is subjected to an impact.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |