Patent US4940270A successfully refreshed from Google Patents.
US4940270A
Expired / Lapsed
US
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Automobile bumper
Assignee: Tonen Chemical Corp
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Filing: 1989-02-27
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Granted: 1990-07-10
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Expires: 2009-02-27
Abstract
Abstract An automoblile bumper comprising a blow-molded hollow body (5) of synthetic resin located between a surface skin (1) and a reinforcement (2), the hollow body (5) having recesses (7) formed by longitudinally extending ribs (6a) and (6a) on either the front or rear side, or on both sides, whereby the bumper uniformly absorbs impact energy when it is hit and thus reduces shocks transmitted to a car body.
Inventors
- 👤 Masayuki Yamazaki
- 👤 Yutaka Takado
- 👤 Takashi Mikami
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:16
CPC Classifications
B; B60; B60R; B60R19/00; B60R19/02; B60R19/18; B60R2019/186; B60R2019/188; B60R2019/1886
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
78 words
An automobile bumper comprising a reinforcement and a surface skin, with a blow-molded hollow body of synthetic resin located between them, said hollow body having at least one longitudinal recess formed by ribs on said hollow body, said ribs having a height of from 50 to 90 percent of the overall height of said hollow body wherein said recess has a depth perpendicular to the longitudinal direction of said recess and said heights are parallel to said depth.
Claim 2
Dependent Claim
78 words
An automobile bumper comprising a reinforcement and a surface skin, with a blow-molded hollow body of synthetic resin located between them, said hollow body having at least one longitudinal recess formed by ribs on said hollow body, said ribs having a height of from 50 to 90 percent of the overall height of said hollow body wherein said recess has a depth perpendicular to the longitudinal direction of said recess and said heights are parallel to said depth.
Claim 3
Dependent Claim
19 words
An automobile bumper according to claim 1 wherein said ribs are formed on the front of said hollow body.
Claim 4
Dependent Claim
20 words
An automobile bumper according to claim 1 wherein said ribs are formed on the rear side of said hollow body.
Claim 5
Dependent Claim
19 words
An automobile bumper according to claim 1 wherein said ribs are formed on both sides of said hollow body.
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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) | 1993-07-09 | 1994-01-08 | 1994-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-09 | 1998-01-08 | 1998-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-09 | 2002-01-08 | 2002-07-10 | $7700.00 | Window Closed / Lapsed |