US5149479A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of manufacturing modular cover of air bag
Assignee: Takata Corp
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Filing: 1991-01-31
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Granted: 1992-09-22
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Expires: 2011-01-31
Abstract
Abstract A resin material is fed into a cavity of a mold provided with a movable member adapted to form a tear-line on the resin material and capable of moving toward, and away from, the mold cavity such that when the mold cavity is filled with the resin material and the mold is closed, the movable member is advanced toward the mold cavity thereby obtaining a modular cover provided with a tear-line having a small thickness and a high degree of strength.
Inventors
- 👤 Hideo Nakajima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:29
CPC Classifications
B; B60; B60R; B60R21/00; B60R21/02; B60R21/16; B60R21/20; B60R21/215; B60R21/2165; B60R21/21656; B60R21/18; B29; B29C; B29C37/00; B29C37/0053; B29C37/0057; B29C43/00; B29C43/02; B29C43/021; B29C43/32; B29C43/36; B29C43/361; B29C44/00; B29C44/02; B29C44/04; B29C44/0446; B29C45/00; B29C45/17; B29C45/46; B29C45/56; B29C45/5675; B29C70/00; B29C70/68; B29C70/70; B29C43/34; B29C2043/3444; B29C2043/3615; B29C2043/3618; B29C2791/00; B29C2791/001; B29L; B29L2031/00; B29L2031/30; B29L2031/3005; B29L2031/3038; B29L2031/767
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
243 words
A method of manufacturing a modular cover for an air bag comprising, preparing a mold formed of a stationary die, a movable die movable toward the stationary die to define a cavity between the two dies and two tear-line impressing movable members attached to the respective dies and movable forward and rearward with respect to the cavity formed between the two dies, each movable member having an elongated projection for forming a tear-line and flat side faces on both sides of the elongated projection; withdrawing the movable members away from the cavity of the mold to form extra spaces adjacent the cavity; supplying a resin material into the cavity of the mold to fill the resin material in the cavity and the extra spaces; moving the respective movable members toward the cavity to positions where the flat side faces on both sides of the respective elongated projections are flush with respective outer surfaces of the cavity and the elongated projections project into the cavity so that tear-lines are formed in the resin material supplied into the mold and the resin material in the extra spaces is supplied to an area around the tear-lines with compression to provide enough density at the area around the tear-lines; hardening the resin material within the cavity of the mold; and separating the hardened resin material from the mold thereby obtaining the modular cover provided with the tear-lines on both sides of the modular cover with sufficient strength.
Claim 2
Independent Claim
243 words
A method of manufacturing a modular cover for an air bag comprising, preparing a mold formed of a stationary die, a movable die movable toward the stationary die to define a cavity between the two dies and two tear-line impressing movable members attached to the respective dies and movable forward and rearward with respect to the cavity formed between the two dies, each movable member having an elongated projection for forming a tear-line and flat side faces on both sides of the elongated projection; withdrawing the movable members away from the cavity of the mold to form extra spaces adjacent the cavity; supplying a resin material into the cavity of the mold to fill the resin material in the cavity and the extra spaces; moving the respective movable members toward the cavity to positions where the flat side faces on both sides of the respective elongated projections are flush with respective outer surfaces of the cavity and the elongated projections project into the cavity so that tear-lines are formed in the resin material supplied into the mold and the resin material in the extra spaces is supplied to an area around the tear-lines with compression to provide enough density at the area around the tear-lines; hardening the resin material within the cavity of the mold; and separating the hardened resin material from the mold thereby obtaining the modular cover provided with the tear-lines on both sides of the modular cover with sufficient strength.
Claim 3
Dependent Claim
36 words
A method according to claim 1, further comprising arranging a reinforcing member within said mold prior to supplying the resin material into said mold so that the resultant modular cover is reinforced with said reinforcing member.
Claim 4
Dependent Claim
14 words
A method according to claim 1, wherein said resin material is a thermosetting resin.
Claim 5
Dependent Claim
14 words
A method according to claim 1, wherein said resin material is a urethane resin.
Claim 6
Dependent Claim
13 words
A method according to claim 1, wherein said resin material is foam urethane.
Claim 7
Dependent Claim
29 words
A method according to claim 1, wherein said movable member is moved forward within five minutes after said resin material has been supplied into the cavity of said mold.
Claim 8
Dependent Claim
26 words
A method according to claim 2, wherein said reinforcing member is at least a kind selected from a cloth, metallic wire netting and synthetic fiber netting.
References Cited (Backward Citations)
US2578719A
Cited
GB1176813A
Cited
GB1173839A
Cited
GB1257494A
Cited
GB1346892A
Cited
GB1314452A
Cited
US3996329A
Cited
GB2139549A
Cited
GB2191442A
Cited
US4980115A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-22 | 1996-03-23 | 1996-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-22 | 2000-03-23 | 2000-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-22 | 2004-03-23 | 2004-09-22 | $7700.00 | Window Closed / Lapsed |