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US3799727A Expired / Lapsed US ⏱️ 0.0 years remaining

Heat control for fabric molding

Assignee: International Fabric Molders Inc
•
Filing: 1972-05-18
•
Granted: 1974-03-26
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Expires: 1992-05-18
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Abstract

Abstract A heat control structure for use in fabric molding. A heater rack is mounted for sliding horizontal movement to heat both sides of the fabric simultaneously for molding in unheated molds. The heating rods adjacent to outer areas of the rack are disposed closer together than those in the inner areas to compensate for heat dissipation. Separate heat controls are provided for opposite sides of the fabric and for the inner and outer areas of the fabric.

Inventors

  • 👤 J Howard

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-26 00:09
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/42; B29C51/421; B29C51/425; B29C51/002; B29C51/004; B29L; B29L2031/00; B29L2031/48; B29L2031/4871; B29L2031/4885

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 258 words
In a molding press for use in molding flat pieces of fabric into three dimensional shapes for use in garments, in which a plurality of unheated mold parts are mounted for vertical movement into a closed position with complementary unheated mold parts to mold one or more layers of fabric disposed between said mold parts, the improvement comprising a heater rack adapted to heat both sides of said fabric simultaneously, said heater rack being mounted for sliding horizontal movement between an operating position and a retracted position, said heating rack having an upper portion and a lower portion, said upper portion being disposed directly above said fabric and extending parallel thereto and said lower portion being disposed directly below said fabric and extending parallel thereto when said heater rack is in operating position, said heater rack in retracted position being moved horizontally completely away from said fabric to permit said mold parts to close and mold said fabric, each of said upper and lower portions of said heating rack having a plurality of elongated parallel heating rods extending longitudinally thereacross, said rods comprising a plurality of narrow rods disposed adjacent to each of the opposite side edges of said rack and a plurality of wider rods extending across the inner portion of the rack between said narrow rods, whereby more heat is provided along the side edges of said rack to compensate for increased heat dissipation along the sides of said rack and fabric, to thereby provide uniform heating and molding across the entire area of said fabric.
Claim 2
Dependent Claim 258 words
In a molding press for use in molding flat pieces of fabric into three dimensional shapes for use in garments, in which a plurality of unheated mold parts are mounted for vertical movement into a closed position with complementary unheated mold parts to mold one or more layers of fabric disposed between said mold parts, the improvement comprising a heater rack adapted to heat both sides of said fabric simultaneously, said heater rack being mounted for sliding horizontal movement between an operating position and a retracted position, said heating rack having an upper portion and a lower portion, said upper portion being disposed directly above said fabric and extending parallel thereto and said lower portion being disposed directly below said fabric and extending parallel thereto when said heater rack is in operating position, said heater rack in retracted position being moved horizontally completely away from said fabric to permit said mold parts to close and mold said fabric, each of said upper and lower portions of said heating rack having a plurality of elongated parallel heating rods extending longitudinally thereacross, said rods comprising a plurality of narrow rods disposed adjacent to each of the opposite side edges of said rack and a plurality of wider rods extending across the inner portion of the rack between said narrow rods, whereby more heat is provided along the side edges of said rack to compensate for increased heat dissipation along the sides of said rack and fabric, to thereby provide uniform heating and molding across the entire area of said fabric.
Claim 3
Dependent Claim 25 words
The structure described in claim 1, said rods being of progressively wider configuration from the side edges of said rack to the inner portion thereof.
Claim 4
Dependent Claim 37 words
The structure described in claim 1, and separate control means for controlling the heat supply to the outer and inner areas of said rack to provide uniform heating and molding across the entire area of said fabric.
Claim 5
Dependent Claim 43 words
The structure described in claim 1, and separate control means for controlling the heat supply to the upper and lower portions of said rack to provide differential heating of the upper and lower layers of multiple layers of fabric disposed upon said rack.
Claim 6
Dependent Claim 43 words
The structure described in claim 3, and separate control means for controlling the heat supply to the upper and lower portions of said rack to provide differential heating of the upper and lower layers of multiple layers of fabric disposed upon said rack.

References Cited (Backward Citations)

US2166215A Cited
US2569856A Cited
US2521388A Cited
US3025566A Cited
US2976658A Cited
US3186034A Cited
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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) 1977-03-25 1977-09-24 1978-03-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-03-25 1981-09-24 1982-03-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-03-25 1985-09-24 1986-03-26 $7700.00 Window Closed / Lapsed

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