End piece, temple with end piece, unit for eyeglass frame and eyeglasses
AssigneesNikon Eyewear Co., Ltd., Nikon Corporation
InventorHideaki Asano
Life of this patent
Estimating the term…
Abstract
A molded unit including several members of eyeglasses uses a combination of hard plastic and shape-memory plastic to avoid sliding and protruding of the members. The unit frame comprises a metal core embedded in a substrate made of hard plastic of which heat deformation temperature is higher than 50 degrees centigrade, and shape-memory plastic that is disposed outside the substrate and has a glass-transition temperature of between 20 degrees centigrade and 40 degrees centigrade. The shape-memory plastic is positioned where a human body contacts.
Claims6
A unit for an eyeglass frame comprising:
- a metal core;
- an end piece substrate made of hard plastic of which heat deformation temperature is higher than 50 degrees centigrade;
- and
- an end piece cover made of shape-memory plastic of which glass transition temperature of between 20 degrees centigrade and 40 degrees centigrade,
- wherein, the metal core is embedded in the end piece substrate, and the end piece cover locates outside the hard plastic substrate, so that the end piece cover contacts a human body.
Eyeglasses comprising:
- a pair of eyeglass lenses;
- a bridge that connects the eyeglass lenses;
- and
- a pair of metal temples;
- wherein an end part of each of the metal temples is embedded in a substrate made of hard plastic of which heat deformation temperature is higher than 50 degrees centigrade, and shape-memory plastic of which glass-transition temperature is between 20 degrees centigrade and 40 degrees centigrade is disposed outside the substrate, the shape-memory plastic being disposed where a human body contacts.
Eyeglasses comprising:
- a pair of eyeglass lenses;
- a bridge that connects the eyeglass lenses;
- a pair of temples;
- a pair of nose pads,
- wherein each of the nose pads includes a metal core, a substrate in which the metal core is embedded and which is made of hard plastic of which heat deformation temperature is higher than 50 degrees centigrade, and shape-memory plastic of which glass-transition temperature is between 20 degrees centigrade and 40 degrees centigrade is disposed outside the substrate, the shape-memory plastic being disposed where a human body contacts.
A metal temple having an end piece made of shape-memory plastic of which glass-transition temperature is between 20 degrees centigrade and 40 degrees centigrade, a part of the metal temple being used as a metal core which is inserted into the end piece, wherein the metal core is embedded in a substrate made of hard plastic of which heat deformation temperature is higher than 50 degrees centigrade, the shape-memory plastic being disposed outside the substrate.
An end piece including a substrate that is made of hard plastic of which heat deformation temperature is higher than 50 degrees centigrade and has a long hall into which a metal core of a metal temple is inserted, and shape-memory plastic that has a glass-transition temperature of between 20 degrees centigrade and 40 degrees centigrade and is disposed outside the substrate.
Dependencies are inferred from the claim text.