Patent EP0334761A1 successfully refreshed from Google Patents.
US4333221A
Expired / Lapsed
US
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Method for producing a channel shaped trim
Assignee: Toyoda Gosei Co Ltd
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Filing: 1980-04-28
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Granted: 1982-06-08
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Expires: 2000-04-28
Abstract
Abstract A method for producing a channel-shaped trim including a core member embedded within a covering material and having a longitudinally extending opening for embracing and clamping an edge flange of a support member comprising the steps of perforating a plurality of transversely extending slits of which length is made larger at predetermined intervals in a band-shaped metallic plate to form unslit connecting portions of which width is made narrower at predetermined intervals in both side end portions thereof, rolling the unslit connecting portions in a longitudinal direction thereof to form a core member, covering the core member with a covering material, breaking the core member in the narrower connecting portions to divide into a plurality of core pieces, and bending the covered and divided core member into a desired cross-sectional shape of the opening.
Inventors
- 👤 Keizo Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:41
CPC Classifications
B; B60; B60J; B60J10/00; B60J10/80; B29; B29C; B29C48/00; B29C48/03; B29C48/07; B29C48/15; B29C48/154; B60J10/15; B60J10/18; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1002; Y10T156/1007; Y10T156/1008; Y10T156/1026; Y10T156/1052; Y10T156/1062; Y10T156/1064; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/4979; Y10T29/49798; Y10T29/4998; Y10T29/49982; Y10T29/49986; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24298; Y10T428/24322; Y10T428/24331
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
254 words
A method for producing a channel-shaped trim including a core member embedded within a covering material and having a longitudinally extending opening for embracing and clamping an edge flange of a support member comprising the steps of: preparing a core member from a band-shaped metallic plate by perforating a plurality of transversely extending slits in said plate, so as to be arranged in a longitudinal direction thereof at predetermined intervals, the length of said slits being made larger every at least two slits, thereby to form a series of unslit connecting portions in both side end portions of said plate, of which width is made narrower at predetermined intervals in accordance with the length of said slits; and by rolling said series of unslit connecting portions in a longitudinal direction of said plate so as to make said connecting portions thin and enlarge said transversely extending slits into slots having a predetermined width in a longitudinal direction of said plate; covering said core member with a covering material to form a covered core member; applying a bending force to said covered core member in a vertical direction thereof to break said core member in said narrower connecting portions in a transverse direction of said member and to divide said core member into a plurality of core pieces within said covering material; and bending said plurality of core pieces divided within said covering material to form a channel-shaped trim having a longitudinally extending opening for embracing and clamping an edge flange of a support member.
Claim 2
Independent Claim
254 words
A method for producing a channel-shaped trim including a core member embedded within a covering material and having a longitudinally extending opening for embracing and clamping an edge flange of a support member comprising the steps of: preparing a core member from a band-shaped metallic plate by perforating a plurality of transversely extending slits in said plate, so as to be arranged in a longitudinal direction thereof at predetermined intervals, the length of said slits being made larger every at least two slits, thereby to form a series of unslit connecting portions in both side end portions of said plate, of which width is made narrower at predetermined intervals in accordance with the length of said slits; and by rolling said series of unslit connecting portions in a longitudinal direction of said plate so as to make said connecting portions thin and enlarge said transversely extending slits into slots having a predetermined width in a longitudinal direction of said plate; covering said core member with a covering material to form a covered core member; applying a bending force to said covered core member in a vertical direction thereof to break said core member in said narrower connecting portions in a transverse direction of said member and to divide said core member into a plurality of core pieces within said covering material; and bending said plurality of core pieces divided within said covering material to form a channel-shaped trim having a longitudinally extending opening for embracing and clamping an edge flange of a support member.
Claim 3
Dependent Claim
54 words
The method for producing a channel-shaped trim according to claim 1, wherein: said transversely extending slits are perforated in a central portion of said plate in a transverse direction thereof; and said connecting portions are formed in the spaces between both ends of each of said slits and both side edges of said plate.
Claim 4
Dependent Claim
97 words
The method for producing a channel-shaped trim according to claim 1, wherein: each of said transversely extending slits is composed of a slit assembly which consists of one central slit and two side slits, which are arranged in line in a transverse direction of said plate, said central slit being perforated in a central portion of said plate and said side slits being perforated in both side edges thereof so as to be spaced from said central slit; and said connecting portions are formed between both ends of said central slit and ends of said side slits.
Claim 5
Dependent Claim
36 words
The method for producing a channel-shaped trim according to claim 3, wherein: the length of said central slits is made larger every at least two slits; and the length of said side slits is made equal.
Claim 6
Dependent Claim
36 words
The method for producing a channel-shaped trim according to claim 3, wherein: the length of said central slits is made equal; and the length of said side slits is made larger every at least two slits.
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) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |