Patent US5412860A successfully refreshed from Google Patents.
US5412860A
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Method of making a back-rest frame for a seat
Assignee: Ikeda Corp
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Filing: 1993-11-05
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Granted: 1995-05-09
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Expires: 2013-11-05
Abstract
Abstract A back-rest frame of a vehicular seat comprises a generally U-shaped frame member. The frame member includes a generally U-shaped upper section with which a pair of side sections are integrally connected. The frame member is formed of an elongate material which is made of an aluminum light alloy and has the same sectional shape throughout the length thereof. The elongate material includes a hollow base section with which extended wall sections are integral. The frame member is produced by bending the elongate material into a generally U-shape and then by cutting off the extended wall sections from a part corresponding to the upper section of the frame member.
Inventors
- 👤 Fumio Miyauchi
- 👤 Shouzi Mizuno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:05
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/36; A47C7/40; A47C5/00; A47C5/04; B; B60; B60N; B60N2/00; B60N2/68; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616; Y10T29/49622; Y10T29/4998; Y10T29/49995
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
60 words
A method of making a back-rest frame, comprising the steps of: providing a single straight elongate member having a constant cross-sectional shape throughout its length, the cross-sectional shape including a base portion and extended wall portions; bending the member into a generally U-shape having an upper section and side sections; and removing the extended wall portions from the upper section.
Claim 2
Independent Claim
60 words
A method of making a back-rest frame, comprising the steps of: providing a single straight elongate member having a constant cross-sectional shape throughout its length, the cross-sectional shape including a base portion and extended wall portions; bending the member into a generally U-shape having an upper section and side sections; and removing the extended wall portions from the upper section.
Claim 3
Dependent Claim
42 words
The method of claim 1, wherein the extended wall portions include a side wall part and a rear wall part, the method further comprising the step of bending said side wall and rear wall parts along their lengths to form reinforcement flanges.
Claim 4
Dependent Claim
21 words
The method of claim 2, further comprising the step of forming an elongate projection or bead on the side wall part.
Claim 5
Dependent Claim
20 words
The method of claim 2, wherein the side wall part and the rear wall part are perpendicular to each other.
Claim 6
Dependent Claim
20 words
The method of claim 2, further comprising the step of providing the side wall part with a seat reclining mechanism.
Claim 7
Dependent Claim
16 words
The method of claim 1, wherein the providing step includes the step of extruding said member.
Claim 8
Dependent Claim
20 words
The method of claim 6, wherein the extruding step includes the step of extruding the member from an aluminum alloy.
Claim 9
Dependent Claim
18 words
The method of claim 1, further comprising the step of connecting lower end portions of the side sections.
Claim 10
Dependent Claim
24 words
The method of claim 8, wherein the step of connecting includes the step of connecting lower end portions using a hollow elongate rigid member.
Claim 11
Dependent Claim
35 words
The method of claim 1, wherein the providing step includes the step of providing a single straight elongate member having a hollow base portion including side hollows formed on opposite sides of a central hollow.
Claim 12
Dependent Claim
16 words
The method of claim 10, wherein the side hollows and the central hollow have rectangular cross-sections.
Claim 13
Dependent Claim
22 words
The method of claim 1, further comprising the step of fixedly providing at least one cylindrical holder member on the upper section.
Claim 14
Independent Claim
60 words
A method of making a back-rest frame, comprising the steps of: providing a single elongate member having a constant cross-section throughout its length and including a base portion and extended wall portions; removing the extended wall portions from a central section of the elongate member; and bending the member into a generally U-shape having the central section and side sections.
Claim 15
Independent Claim
60 words
A method of making a back-rest frame, comprising the steps of: providing a single elongate member having a constant cross-section throughout its length and including a base portion and extended wall portions; removing the extended wall portions from a central section of the elongate member; and bending the member into a generally U-shape having the central section and side sections.
Claim 16
Dependent Claim
42 words
The method of claim 13, wherein the extended wall portions include a side wall part and a rear wall part, the method further comprising the step of bending said side wall and rear wall parts along their lengths to form reinforcement flanges.
Claim 17
Dependent Claim
21 words
The method of claim 14, further comprising the step of forming an elongate projection or bead on the side wall part.
Claim 18
Dependent Claim
16 words
The method of claim 13, wherein the providing step includes the step of extruding said member.
Claim 19
Dependent Claim
25 words
The method of claim 13, further comprising the step of connecting end portions of the side sections, which end portions are distal the central section.
Claim 20
Dependent Claim
34 words
The method of claim 13, wherein the providing step includes the step of providing a single elongate member having a hollow base portion including side hollows formed on opposite sides of a central hollow.
Claim 21
Dependent Claim
16 words
The method of claim 18, wherein the side hollows and the central hollow have rectangular cross-sections.
Claim 22
Dependent Claim
22 words
The method of claim 13, further comprising the step of fixedly providing at least one cylindrical holder member on the central section.
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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) | 1998-05-08 | 1998-11-07 | 1999-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-05-08 | 2002-11-07 | 2003-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-05-08 | 2006-11-07 | 2007-05-09 | $7700.00 | Window Closed / Lapsed |