METHODS OF CONTROLLING HAZE IN ORTHODONTIC APPLIANCES INCLUDING SEMI-CRYSTALLINE POLYMERS

    公开(公告)号:US20230363858A1

    公开(公告)日:2023-11-16

    申请号:US18029942

    申请日:2021-10-05

    CPC classification number: A61C7/08

    Abstract: A dental appliance includes a polymeric shell with a plurality of cavities for receiving one or more teeth, including an interior region with a core layer of a first thermoplastic polymer A with a thermal transition temperature of about 70° C. to about 140° C. and a flexural modulus greater than about 1.3 GPa, and first and second interior layers of a second thermoplastic polymer B with a glass transition temperature of less than about 0° C., a flexural modulus less than about 1 GPa, and an elongation a break of greater than 150%; and first and second exterior layers of a third thermoplastic polymer C with a thermal transition temperature of about 70° C. to about 140° C. and a flexural modulus greater than about 1.3 GPa. The dental appliance demonstrates enhanced optical properties, with enhanced light transmission and low haze.

    CONTROL OF BOLLARD LUMINAIRE FOR CROSSWALK
    13.
    发明申请
    CONTROL OF BOLLARD LUMINAIRE FOR CROSSWALK 审中-公开
    用于CROSSWALK的BOLLARD LUMINAIRE的控制

    公开(公告)号:US20170038018A1

    公开(公告)日:2017-02-09

    申请号:US15303606

    申请日:2015-04-14

    Abstract: The present disclosure describes a control scheme for actively detecting the presence of a pedestrian which triggers the lighting of a bollard-style luminaire, methods for crosswalk illumination using the bollard-style luminaires, and methods of communication between bollard-style luminaires. The present disclosure further describes actively monitoring for vehicles and indicating safe passage, through lighting feedback on a pedestrian crosswalk or other walkway. The bollard luminaire includes a design that generally confines light to illuminate the crosswalk and the pedestrian in the crosswalk, such that light that could produce glare for the pedestrian and/or a driver approaching the crosswalk is minimized.

    Abstract translation: 本公开描述了用于主动地检测触发柱廊式照明器的照明的行人的存在的控制方案,使用柱廊式灯具的人行横道照明的方法,以及柱廊式灯具之间的通信方法。 本公开进一步描述了通过在人行横道或其他人行道上的照明反馈来积极监控车辆并指示安全通行。 护柱灯具包括通常限制光照射人行横道和人行横道中的行人的设计,使得可以使行人和/或靠近人行横道的驾驶员产生眩光的光被最小化。

    MULTI-LAYERED DENTAL APPLIANCE
    18.
    发明申请

    公开(公告)号:US20220233276A1

    公开(公告)日:2022-07-28

    申请号:US17607091

    申请日:2020-04-29

    Abstract: A dental appliance includes a polymeric shell with a plurality of cavities for receiving one or more teeth, including an interior region with a core layer of a first thermoplastic polymer A with a thermal transition temperature of about 70° C. to about 140° C. in and a flexural modulus greater than about 1.3 GPa, and first and second interior layers of a second thermoplastic polymer B with a glass transition temperature of less than about 0° C. and a flexural modulus less than about 1 GPa; and first and second exterior layers of a third thermoplastic polymer C with a thermal transition temperature of about 70° C. to about 140° C. and a flexural modulus greater than about 1.3 GPa. Interfacial adhesion between any of the adjacent layers in the polymeric shell is greater than about 150 grams per inch.

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