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US4382998A Expired / Lapsed US ⏱️ 0.0 years remaining

Heat-resistant molding composition and molded parts for handling hot glass articles

Assignee: Dura Temp Corp
•
Filing: 1981-06-08
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Granted: 1983-05-10
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Expires: 2001-06-08
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Abstract

Abstract This invention relates to rigid solid-lubricant composite materials which are extremely heat and wear-resistant and are moldable and thermosetting when molded to shape for handling hot glass articles. The composition is comprised of an organic silicone resin having chopped glass fibers and a finely-ground graphite-containing material therein. The composition may be molded to shape by compression or transfer molding into conveyor parts, for example, for handling newly-formed hot glass articles without marring their surfaces.

Inventors

  • 👤 Edward J. Stengle, Jr.
  • 👤 Lester C. Minneman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 14:03
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/02; C08K3/04; C03; C03B; C03B40/00; C03B40/005; C03B9/00; C03B9/30; C03B9/44; C03B9/447; C08K3/34; C08K7/00; C08K7/02; C08K7/04; C08K7/14; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/25; Y10T428/30; Y10T428/31504; Y10T428/31551; Y10T428/31609; Y10T428/31612; Y10T428/31652; Y10T428/31663

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 69 words
A moldable thermosetting composite material for handling newly-formed hot glass articles, and the like, comprising the following constituents in weight percentage: ______________________________________ Range Thermosetting Weight % ______________________________________ Silicone Resin 24.0-40.0 Graphite 15.0-25.0 Chopped Glass Fibers 1.0-55.0 Carbon Powder 0.0-10.0 Amine Catalyst 0.0-1.0 Iron Oxide Pigment 0.0-2.0 Calcium Stearate Lubricant 0.0-1.0 ______________________________________ said material in molded form having properties of high temperature-resistance, medium impact strength and low coefficient of friction.
Claim 2
Dependent Claim 69 words
A moldable thermosetting composite material for handling newly-formed hot glass articles, and the like, comprising the following constituents in weight percentage: ______________________________________ Range Thermosetting Weight % ______________________________________ Silicone Resin 24.0-40.0 Graphite 15.0-25.0 Chopped Glass Fibers 1.0-55.0 Carbon Powder 0.0-10.0 Amine Catalyst 0.0-1.0 Iron Oxide Pigment 0.0-2.0 Calcium Stearate Lubricant 0.0-1.0 ______________________________________ said material in molded form having properties of high temperature-resistance, medium impact strength and low coefficient of friction.
Claim 3
Dependent Claim 74 words
A heat-resistant thermoset-hardened heat-cured molded article for handling newly-formed hot glass products, and the like, comprising the following constituents in weight percentage: ______________________________________ Range Thermosetting Weight % ______________________________________ Silicone Resin 24.0-40.0 Graphite 15.0-25.0 Chopped Glass Fibers 1.0-55.0 Carbon Powder 0.0-10.0 Amine Catalyst 0.0-1.0 Iron Oxide Pigment 0.0-2.0 Calcium Stearate Lubricant 0.0-1.0 ______________________________________ said article having at least one generally-planar surface and having properties of high-temperature resistance, medium impact strength and low coefficient of friction.
Claim 4
Dependent Claim 74 words
A heat-resistant thermoset-hardened heat-cured molded article for handling newly-formed hot glass products, and the like, comprising the following constituents in weight percentage: ______________________________________ Range Thermosetting Weight % ______________________________________ Silicone Resin 24.0-40.0 Graphite 15.0-25.0 Chopped Glass Fibers 1.0-55.0 Carbon Powder 0.0-10.0 Amine Catalyst 0.0-1.0 Iron Oxide Pigment 0.0-2.0 Calcium Stearate Lubricant 0.0-1.0 ______________________________________ said article having at least one generally-planar surface and having properties of high-temperature resistance, medium impact strength and low coefficient of friction.
Claim 5
Dependent Claim 19 words
A heat-resistant molded article in accordance with claim 2 wherein said planar surface comprises the hot glass handling surface.
Claim 6
Dependent Claim 18 words
A heat-resistant molded article in accordance with claim 2, wherein said graphite powder comprises about 20 weight percent.
Claim 7
Dependent Claim 28 words
A heat-resistant molded article in accordance with claim 2, wherein said silicone resin is comprised of methyl and phenyl silanes in a ratio of about 1 to 1.
Claim 8
Dependent Claim 37 words
A heat-resistant molded article in accordance with claim 2, wherein said article is comprised of a rigid interior metallic component and a rigid exterior thermosetting composite material compound, said components being firmly joined into a unitary structure.
Claim 9
Dependent Claim 28 words
A heat-resistant molded article in accordance with claim 2, the hot-glass-contacting planar surface of said article being capable of withstanding long-term operating temperatures up to about 800° F.
Claim 10
Dependent Claim 31 words
A heat-resistant molded article in accordance with claim 2, wherein said article has a pair of opposing exterior parallel planar surfaces adapted to reversible long-term use in contacting hot glass articles.
Claim 11
Dependent Claim 75 words
A heat-resistant thermoset-hardened heat-cured molded article for handling newly-formed hot glass products, and the like, comprising the following constituents by weight: ______________________________________ AMOUNT WEIGHT % ______________________________________ Thermosetting Silicone Resin 25 Graphite 20 Chopped Glass Fibers 49 Carbon Powder 5 Amine Catalyst 0.5 Calcium Stearate Lubricant 0.5 ______________________________________ said article being molded by compression molding and having at least one generally-planar surface, and having properties of high-temperature resistance, medium impact strength and low coefficient of friction.
Claim 12
Dependent Claim 75 words
A heat-resistant thermoset-hardened heat-cured molded article for handling newly-formed hot glass products, and the like, comprising the following constituents by weight: ______________________________________ AMOUNT WEIGHT % ______________________________________ Thermosetting Silicone Resin 25 Graphite 20 Chopped Glass Fibers 49 Carbon Powder 5 Amine Catalyst 0.5 Calcium Stearate Lubricant 0.5 ______________________________________ said article being molded by compression molding and having at least one generally-planar surface, and having properties of high-temperature resistance, medium impact strength and low coefficient of friction.
Claim 13
Dependent Claim 78 words
A heat-resistant thermoset-hardened heat-cured molded article for handling newly-formed hot glass products, and the like, comprising the following constituents by weight: ______________________________________ AMOUNT WEIGHT % ______________________________________ Thermosetting Silicone Resin 35 Graphite 20 Chopped Glass Fibers 37.5 Silica Powder 5 Carbon Powder 1 Amine Catalyst 0.5 Calcium Stearate Lubricant 0.5 ______________________________________ said article being molded by transfer molding and having at least one generally-planar surface, and having properties of high-temperature resistance, medium impact strength and low coefficient of friction.
Claim 14
Dependent Claim 78 words
A heat-resistant thermoset-hardened heat-cured molded article for handling newly-formed hot glass products, and the like, comprising the following constituents by weight: ______________________________________ AMOUNT WEIGHT % ______________________________________ Thermosetting Silicone Resin 35 Graphite 20 Chopped Glass Fibers 37.5 Silica Powder 5 Carbon Powder 1 Amine Catalyst 0.5 Calcium Stearate Lubricant 0.5 ______________________________________ said article being molded by transfer molding and having at least one generally-planar surface, and having properties of high-temperature resistance, medium impact strength and low coefficient of friction.

References Cited (Backward Citations)

US3002862A Cited
US3791998A Cited
US3701753A Cited
US3900661A Cited
US3983265A Cited
US4110095A Cited
JPS5384081A Cited
US4246313A Cited
US4286013A Cited
US4316930A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1986-05-09 1986-11-08 1987-05-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1990-05-09 1990-11-08 1991-05-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1994-05-09 1994-11-08 1995-05-10 $7700.00 Window Closed / Lapsed

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