公开(公告)号：US5942585A

公开(公告)日：1999-08-24

申请号：US996458

申请日：1997-12-23

申请人： Christopher E. Scott ,  Mark E. Stewart ,  Donald S. Wilmoth ,  John C. Morris ,  James R. Bradley

发明人： Christopher E. Scott ,  Mark E. Stewart ,  Donald S. Wilmoth ,  John C. Morris ,  James R. Bradley

IPC分类号： C08L67/02 ,  C08L69/00

CPC分类号： C08L67/02 ,  C08L69/00

摘要： Disclosed are clear blends comprising:(A) from 1 to 99 percent by weight of a polycarbonate comprising a diol component comprising from 5 to 100 mol percent units of a diphenol or mixture of diphenols having the formula ##STR1## (B) from 1 to 99 percent by weight of a polyester comprising (a) a dicarboxylic acid component comprising from 80 to 100 mol percent 1,4-cyclohexane-dicarboxylic acid units; and from 0 to about 20 mol percent modifying dicarboxylic acid units having from 2 to 20 carbons, and(b) a glycol component comprising from 10 to 75 mol percent 2,2,4,4-tetramethyl-1,3-cyclobutanediol units, from 25 to 90 mol percent 1,4-cyclohexanedimethanol units, and from 0 to 10 mol percent modifying glycol units having 2 to 16 carbons,wherein the total units of said polyester is equal to 200 mol percent; wherein said blend is clear and the total weight percent of said polycarbonate (A) and said polyester (B) is equal to 100 weight percent.

摘要翻译： 公开了透明的共混物，其包含：（A）1至99重量％的包含二醇组分的聚碳酸酯，所述二醇组分包含5至100摩尔％的双酚或具有式（B）的二酚的混合物1至99％ 聚酯的重量包含（a）包含80-100摩尔％的1,4-环己烷二羧酸单元的二羧酸组分; 和0至约20摩尔％修饰具有2至20个碳的二羧酸单元，和（b）包含10至75摩尔％的2,2,4,4-四甲基-1,3-环丁二醇单元的二元醇组分， 25至90摩尔％的1,4-环己烷二甲醇单元和0至10摩尔％的具有2至16个碳的改性二醇单元，其中所述聚酯的总单元等于200摩尔％; 其中所述共混物是透明的，并且所述聚碳酸酯（A）和所述聚酯（B）的总重量百分比等于100重量％。

公开(公告)号：US4627569A

公开(公告)日：1986-12-09

申请号：US743163

申请日：1985-06-10

申请人： John C. Morris

发明人： John C. Morris

IPC分类号： F24F3/044 ,  F24F11/04 ,  G05D23/185 ,  F24F7/00

CPC分类号： F24F11/04 ,  F24F3/0442 ,  G05D23/185 ,  Y10T137/2409

摘要： A pneumatic controller for use in controlling airflow in a conditioned air distribution system is adjustable to accommodate different types of damper actuation and thermostats in different systems. The four-function controller can be manually reconfigured to be a direct acting/direct reset controller, a reverse acting/reverse reset controller, a direct action/reverse reset controller or a reverse acting/directing resent controller, all using a single diaphragm valve responsive to differential pressure between total air and static air inputs. A reset unit on one end of the controller can be mounted in four different positions, two upright and two inverted, to provide the four functions, with total air and static air inputs being reversed in position when the controller is in a reverse acting mode. A differential pressure responsive valve at the heart of the system is controlled by a spring which can act as either a tension spring, for direct acting, or as a compression spring, for reverse acting. Manual adjustments are provided for adjusting the spring pressure in the absence of reset, and for adjusting the degree of change in spring pressure when reset occurs. These two adjustments control minimum pressure differential threshold and maximum pressure differential threshold. The latter adjustment preferably includes a slidable fulcrum movement for shifting the position of a fulcrum about which a reset arm pivots during reset, to control the spring tension displacement during reset from zero, at one extreme, to a maximum displacement at the other extreme.

摘要翻译： 用于控制调节空气分配系统中的气流的气动控制器是可调节的，以适应不同类型的阻尼器致动和不同系统中的恒温器。 四功能控制器可以手动重新配置为直接作用/直接复位控制器，反向作用/反向复位控制器，直接动作/反向复位控制器或反向作用/反向控制控制器，全部使用单个隔膜阀响应 到总空气和静态空气输入之间的压差。 控制器一端的复位单元可以安装在四个不同的位置，两个直立和两个倒置，以提供四个功能，当控制器处于反向作用模式时，总空气和静态空气输入反转。 在系统心脏处的差压响应阀由可用作直接作用的拉伸弹簧或作为压缩弹簧用作反向作用的弹簧控制。 提供手动调整，用于在没有复位的情况下调节弹簧压力，并用于调整复位发生时弹簧压力的变化程度。 这两个调整控制最小压差阈值和最大压差阈值。 后者调整优选地包括可滑动的支点运动，用于移动支点的位置，复位臂在复位期间枢转在该支点的位置，以在一个极限处的零复位期间控制弹簧张力位移到另一极端处的最大位移。