Back to results
US 4,678,495 AGranted
Glass shaping mold
AssigneeNippon Sheet Glass Co., Ltd.
InventorHideo Yoshizawa
Life of this patent
Estimating the term…
Abstract
A glass shaping mold includes a female mold member having a shaping surface, a male mold member having a shaping surface complementary to the shaping surface of the female mold member, and a felt sheet disposed on each of the shaping surfaces. The female and male mold members are movable toward each other to shape a heat-softened glass object between the felt sheets on the shaping surfaces.
Claims21
A glass shaping mold comprising:
- a female mold member having a shaping surface;
- a male mold member having a shaping surface complementary to said shaping surface of the female mold member;
- a felt sheet made of at least two different materials, said materials comprising steel fibers and composite fibers including aramid fibers and carbon fibers, said felt sheet disposed on each of said shaping surfaces;
- and
- said female and male mold members being movable toward each other to shape a heat-softened glass object between the felt sheets on said shaping surfaces.
2 more elements
A glass shaping mold comprising:
- a female mold member having a shaping surface;
- a male mold member having a shaping surface complementary to said shaping surface of the female mold member;
- a felt sheet disposed on at least one of said shaping surfaces;
- said felt sheet including at least two different fiber materials, comprising a first material having fibers of large mechanical strength and formed from the group consisting essentially of aramid fibers, steel fibers and mixtures thereof, and
- a second material having fibers of high heat resistance and formed from the group consisting essentially of carbon fibers, glass fibers, silica fibers and mixtures thereof,
- said female and male mold members being movable toward each other to shape a heat-softened glass object against the felt sheet on said at least one of said shaping surfaces.
3 more elements
A glass shaping mold comprising:
- a female mold member having a shaping surface;
- a male mold member having a shaping surface complementary to said shaping surface of the female mold member;
- a felt sheet disposed on at least one of said shaping surfaces;
- said felt sheet including at least first and second layers of heat resistant and mechanically strong fibers formed from the group consisting essentially of aramid fibers, carbon fibers, steel fibers, silica fibers, alumina fibers, asbestos fibers and combinations thereof and
- a cloth layer including fibers formed from the group consisting essentially of glass fibers, aramid fibers, carbon fibers, steel fibers, polyester fibers, nylon fibers, and combinations thereof,
- said first and second layers surrounding a core formed of said cloth layer;
- said female and male mold members being movable toward each other to shape a heat-softened glass object against the felt sheet on said at least one of said shaping surfaces.
4 more elements
Dependencies are inferred from the claim text.