US6065197A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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 06:57
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.
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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) | 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 |