US3857596A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automobile bumper assembly
Assignee: Bridgestone Corp
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Filing: 1973-12-27
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Granted: 1974-12-31
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Expires: 1993-12-27
Abstract
Abstract An automobile bumper assembly having a plurality of hollow tubular elastomer members, each having opposite ends connected to an automobile body and a fender rod, respectively. The overall cross sectional area of the elastomer member is 1.44 to 4.0 times that of the hollow space thereof, taken at right angles to the longitudinal center line of the elastomer member. The elastomeric material of the elastomer member has a hardness of 63* to 104*.
Inventors
- 👤 K Nakamura
- 👤 H Yamazaki
- 👤 K Takeguchi
- 👤 Y Kondo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:51
CPC Classifications
B; B60; B60R; B60R19/00; B60R19/02; B60R19/24; B60R19/26; B60R19/30
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
242 words
An automobile bumper assembly, comprising an automobile body, a fender rod spaced from the automobile body, and a plurality of hollow tubular elastomer members disposed between said automobile body and said fender rod so as to cause the longitudinal central axis of each of said tubular elastomer members to extend from said body to said fender rod, each said elastomer member consisting of an elastomeric material with a Shore A hardness of 63* to 104* and a cross sectional area ratio (S1/S2) of 1.44 to 4.0, S1 being a cross sectional area of the elastomer member taken at right angles to the axial center line thereof and S2 being a cross sectional area of the hollow space within the elastomer member taken in the plane of the area S1, S1 including S2, a plurality of paired mounting rings, each pair of mounting rings being secured to opposite longitudinal ends of one of said tubular elastomer members, a plurality of core rods each being secured to one of the paired mounting rings of corresponding one of the elastomer members so as to extend in alignment with the longitudinal axial center line of the elastomer member, guide members formed in said automobile body so as to guide corresponding one of said core rods, and a plurality of paired bearing sleeves, each pair of sleeves being disposed between said guide and said core rod for slidably supporting said core rod at two axially spaced points.
Claim 2
Dependent Claim
242 words
An automobile bumper assembly, comprising an automobile body, a fender rod spaced from the automobile body, and a plurality of hollow tubular elastomer members disposed between said automobile body and said fender rod so as to cause the longitudinal central axis of each of said tubular elastomer members to extend from said body to said fender rod, each said elastomer member consisting of an elastomeric material with a Shore A hardness of 63* to 104* and a cross sectional area ratio (S1/S2) of 1.44 to 4.0, S1 being a cross sectional area of the elastomer member taken at right angles to the axial center line thereof and S2 being a cross sectional area of the hollow space within the elastomer member taken in the plane of the area S1, S1 including S2, a plurality of paired mounting rings, each pair of mounting rings being secured to opposite longitudinal ends of one of said tubular elastomer members, a plurality of core rods each being secured to one of the paired mounting rings of corresponding one of the elastomer members so as to extend in alignment with the longitudinal axial center line of the elastomer member, guide members formed in said automobile body so as to guide corresponding one of said core rods, and a plurality of paired bearing sleeves, each pair of sleeves being disposed between said guide and said core rod for slidably supporting said core rod at two axially spaced points.
Claim 3
Dependent Claim
47 words
An automobile bumper assembly according to claim 1, wherein one of the two mounting rings of each elastomer member is integrally secured to said fender body, and each said core rod is secured to the fender side mounting ring so as to extend toward the automobile body.
Claim 4
Dependent Claim
122 words
An automobile bumper assembly according to claim 1, wherein one of said mounting rings of each elastomer member is directly secured to the automobile body and the other one of the two mounting rings being disposed at a position between said fender rod and the elastomer member, each said core rod is secured to said fender rod so as to extend through said tubular elastomer member in alignment with the longitudinal axial center line of the elastomer member, fender side one of the two mounting rings being secured to said core rod, and each pair of the bearing sleeves consists of one sleeve disposed between said fender rod and said elastomer member and another sleeve secured to the automobile side mounting ring.
Claim 5
Dependent Claim
83 words
An automobile bumper assembly according to claim 1, wherein each core rod is a hollow tube having one end thereof secured to said fender rod and the opposite end thereof secured to the fender side mounting ring, each said guide member consists of a rod secured to the automobile body side mounting ring so as to extend into inside of the hollow tube, and each said pair of bearing sleeves are disposed between the rod constituting the guide member and said hollow tube.
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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |