摘要:
The invention relates to a linear UV polarizer based on a polymerized mesogen obtained by curing with actinic radiation or heat of a polymerizable composition comprising:a) a liquid crystalline component A composed of one or more achiral mesogenic compounds having at least one polymerizable end group optionally linked via a spacer group to a mesogenic core,b) a dichroic component B that absorbs light in the UV region, with an absorption maximum of from 320 to 440 nm, andc) a photoinitiator or thermal initiator component C.
摘要:
An electrooptical system is disclosed in which a PDLC film is positioned between 2 electrode layers. The PDLC film contains a liquid crystal mixture forming microdroplets in an optically isotropic, transparent polymer matrix. The liquid crystal mixture comprises one or more compounds of formula I ##STR1## wherein R, A.sup.1, A.sup.2, Z.sup.1, Z.sup.2, X.sup.1, X.sup.2, Q, Y and n as herein defined, and one or more reactive liquid crystalline compounds. The PDLC film exhibits improved switching times, especially at low temperatures.
摘要:
An electrooptical systemwhich between 2 electrode layers contains a PDLC film comprising a liquid crystal mixture forming microdroplets in an optically isotropic, transparent polymer matrix,in which one of the refractive indices of the liquid crystal mixture is matched to the refractive index of the polymer matrix, andwhich in one of the two switching states has reduced transmission compared with the other state independent of the polarization of the incident light,characterized in that the precursor of the PDLC film comprisesa) 50-90 wt. % of a liquid crystal mixture containing one or more compounds of the formula I ##STR1## b) 15-49.5 wt. % of the precursor of the polymer matrix.
摘要:
A universal skirt board has a base, a top flange section, an overhang section, and a sealing flange attached to the top flange section. The base has at least one ridge extending away from the base in a first direction, and a projection extending in the first direction. The top flange section is attached to the base. The overhang section is also attached to the base and defines a drip edge. The sealing flange is attached to the top flange section. The at least one ridge is formed to rest on a top of a base board. The projection is formed to fit into a slot defined in the top of the base board to provide an interference connection.
摘要:
A stroller frame has a front, a back, and a ready for use configuration. The stroller frame includes a spine having a forward end, a rear end, an underside, and a top side. The spine is positioned generally along a center lengthwise axis of the stroller frame with the forward end coinciding with the front of the stroller frame and the rear end elevated above the forward end and coinciding with the back of the stroller frame. A pair of rear legs each has a proximal end coupled to the spine and a distal end located below, laterally outward, and rearward of the respective proximal end. The proximal ends are laterally spaced apart from one another. A pair of support arms each has a proximal end coupled to the spine. Each support arm has a distal end portion located above, laterally outward, and forward of the respective proximal end. A seat is frame coupled to the stroller frame and positioned on the top side of the spine. The stroller can be collapsible in three dimensions. The spine can be lengthwise extendable or retractable, which in turn can move the legs and support arms in concert between the ready for use configuration and a folded or collapsed configuration.
摘要:
A stroller handle assembly has a handle with a grip part. The handle is movable from an in-use position extending from the stroller frame to a collapsed position lying adjacent and parallel along the stroller frame. The assembly has a bracket for attaching the handle to the stroller frame. The bracket has one part configured to allow rotation of the handle sideways away from the in-use position to a partly collapsed position. The bracket has a different part configured to allow the handle to rotate to the completely collapsed position adjacent the stroller frame.
摘要:
A cup holder assembly for a stroller has a slider that is carried on and slidable along a part of the stroller frame between a stowed position and a deployed position. A cup receiving ring is carried on the slider and is movable between a stowed orientation and a deployed orientation. A support arm is carried on the slider and is movable between a stowed orientation and a deployed orientation. Part of the support arm extends beneath the cup receiving ring in the respective deployed orientations. When the cup receiving ring and the support arm are in the respective stowed orientations and the slider is in the stowed position the cup holder assembly is housed within a space in the stroller frame.
摘要:
A child booster seat is configured for use in an automobile and includes a seat portion and can also include a backrest connected to the seat. The seat includes a suspended flexible seating surface, and a crash pad mounted onto the seat below the seating surface. During normal use, the seating surface provides enhanced comfort to the occupant. In the event of a sudden deceleration (for instance during an automobile accident), the occupant travels forward and down into the pad, which limits the amount of travel of the occupant and prevents the automobile safety belt from pressing against soft tissue and causing seat belt syndrome while, at the same time, absorbing at least a portion of the shock imparted onto the occupant.
摘要:
A high chair features various modes of adjustability and enhanced utility. The height of the chair can be adjusted using a single hand that engages a rear handle. The height of a seat platform of the chair can be adjusted separately relative to the tray. The tray itself is ergonomically designed for the benefit of the caregiver. A removable tray liner facilitates after-meal clean-up. Wheels on the underside of the tray ease fore/aft adjustment. A pivoting back rest of the chair minimizes rearward shift of the center of gravity of the occupied chair, thus requiring a smaller chair footprint. Further, an accessory bar pivoted to a seat back portion of the chair provides readily accessible entertainment.