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US6065197A
Expired / Lapsed
US
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Method of spreading a sheet on a frame member and method of manufacturing a chair by the sheet spreading method
Assignee: Aichi Corp
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Filing: 1999-03-01
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Granted: 2000-05-23
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Expires: 2019-03-01
Abstract
Abstract The present invention realizes spreading a sheet on a frame member by a simple structure and a simple process, and prevents uneven tension charged against the sheet. In the sheet spreading method of the invention, a core member for a backrest of a chair which is heated to around 200° C. in a furnace is put into a flow dipping tank filled with powder resin. As a result, a resin coating is formed on the surface of the pipe constituting the core member. Also, a mesh is placed on a metal mold and clamped. Since a recess corresponding to the shape of the core member is formed in the top side of the metal mold, the mesh is spread on the core member with a tension charged against when the core member having the above-mentioned coating is pressed into the recess.
Inventors
- 👤 Toru Iseki
- 👤 Takehiko Kawashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:09
CPC Classifications
A; A47; A47C; A47C7/00; A47C7/02; A47C7/28; A47C7/282; A47C31/00; A47C31/02; B; B29; B29C; B29C39/00; B29C39/02; B29C39/10; B29C41/00; B29C41/02; B29C41/08; B29C41/10; B29C65/00; B29C65/48; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/13; B29C66/131; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5346; B29C2791/00; B29C2791/001; B29C65/4805; B29C65/481; B29C65/4815; B29C65/486; B29C66/80; B29C66/83; B29C66/832; B29L; B29L2007/00; B29L2007/008; B29L2012/00; Y; Y10; Y10T; Y10T29/00; Y10T29/48; Y10T29/481; Y10T29/49; Y10T29/49826; Y10T29/49863; Y10T29/49867; Y10T29/49885
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
A method of spreading a sheet on a frame member, comprising the steps of: placing a sheet, which is cut into a size larger than the exact size to be spread on a frame member, on a metal mold having a recess formed corresponding to the shape of said frame member and a cooling device attached; clamping said sheet to said metal mold in at least four directions, while forming a molten coating of thermoplastic resin on said frame member; setting said frame member with said coating formed into said recess of said metal mold while keeping said sheet clamped in such a way that a tension is charged against said sheet, thereby letting part of said resin forming said coating penetrate said sheet; and solidifying said resin which surrounds said frame member and has penetrated said sheet by actuating said cooling device.
Claim 2
Independent Claim
143 words
A method of spreading a sheet on a frame member, comprising the steps of: placing a sheet, which is cut into a size larger than the exact size to be spread on a frame member, on a metal mold having a recess formed corresponding to the shape of said frame member and a cooling device attached; clamping said sheet to said metal mold in at least four directions, while forming a molten coating of thermoplastic resin on said frame member; setting said frame member with said coating formed into said recess of said metal mold while keeping said sheet clamped in such a way that a tension is charged against said sheet, thereby letting part of said resin forming said coating penetrate said sheet; and solidifying said resin which surrounds said frame member and has penetrated said sheet by actuating said cooling device.
Claim 3
Dependent Claim
59 words
The method of spreading a sheet on a frame member according to claim 1, wherein said frame member is made of a metal; said sheet is selected from a group consisting of a resin mesh and a wire mesh; and said coating is formed by melting and making a powder resin adhere to said frame member which is preheated.
Claim 4
Dependent Claim
45 words
The method of spreading a sheet on a frame member according to claim 2, wherein said powder resin is melted and made to adhere to said frame member by putting said frame member into a flow dipping tank in which said powder resin is suspended.
Claim 5
Dependent Claim
33 words
The method of spreading a sheet on a frame member according to claim 1, further including the step of sprinkling powder resin in said recess before clamping said sheet to said metal mold.
Claim 6
Dependent Claim
41 words
The method of spreading a sheet on a frame member according to claim 1, further including the step applying a thickness of said coating such that resin collects like beading along the border line between said frame member and said sheet.
Claim 7
Dependent Claim
66 words
The method of spreading a sheet on a frame member according to claim 1, wherein said recess corresponds to the shapes of a core member and a top surface of a finished seat; and, further including the step of placing a cloth covering and said sheet, on said metal mold in this order with a cushion there between, and clamping them together to said metal mold.
Claim 8
Dependent Claim
66 words
The method of spreading a sheet on a frame member according to claim 1, wherein said recess corresponds to the shapes of a core member and a top surface of a finished backrest; and, further including the step of placing a cloth covering and said sheet, on said metal mold in this order with a cushion there between, and clamping them together to said metal mold.
References Cited (Backward Citations)
US2838100A
Cited
US2845699A
Cited
JPS546644A
Cited
JPS5420900A
Cited
JPS5423523A
Cited
JPS5621039A
Cited
US4555293A
Cited
JPS6112830A
Cited
US4861462A
Cited
JPH029723A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-05-23 | 2003-11-22 | 2004-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-05-23 | 2007-11-22 | 2008-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-05-23 | 2011-11-22 | 2012-05-23 | $7700.00 | Window Closed / Lapsed |