公开(公告)号：US5100606A

公开(公告)日：1992-03-31

申请号：US595774

申请日：1990-11-30

申请人： Derek Woollatt ,  George J. Safford

发明人： Derek Woollatt ,  George J. Safford

IPC分类号： B29C45/00 ,  F04B39/10 ,  F16K15/12

CPC分类号： B29C45/00 ,  F04B39/1053 ,  F16K15/12

摘要： A method of forming a plastic sealing plate for a compressor valve. A center gated mold is employed in conjunction with a heated barrel which encloses a reciprocating screw for feeding plastic through an injector into the mold. Polyetheretherketone polymer pellets are heated to about 150.degree. C. to remove moisture after which they are fed into and through the heated barrel, the heated barrel being elevated to a temperature in the range of 350.degree.-380.degree. C. for melting the pellets. The mold is heated to a temperature in the range of 150.degree.-180.degree. C. The melted polymer is then injected into the mold by the reciprocating screw to obtain proper mixing and pressurizing, after which the mold is heated to a temperature of about 300.degree. C. to anneal the plastic in the mold and to expand the polymer to fill the entire mold and relieve stress in the material.

摘要翻译： 一种形成用于压缩机阀的塑料密封板的方法。 中心门控模具与加热的桶结合使用，该筒体包围用于将塑料通过注射器输送到模具中的往复式螺杆。 将聚醚醚酮聚合物颗粒加热至约150℃以除去水分，然后将其加入并通过加热的桶，将加热的桶升至350-380℃的温度以熔化该颗粒。 将模具加热到150-180℃的温度。然后通过往复式螺杆将熔融的聚合物注入模具中以获得适当的混合和加压，然后将模具加热至约300℃ 在模具中退火塑料并膨胀聚合物以填充整个模具并减轻材料中的应力。

公开(公告)号：US4913187A

公开(公告)日：1990-04-03

申请号：US258125

申请日：1988-10-11

申请人： Derek Woollatt ,  George J. Safford

发明人： Derek Woollatt ,  George J. Safford

IPC分类号： B29C45/00 ,  F04B39/10 ,  F16K15/12

CPC分类号： F04B39/1053 ,  B29C45/00 ,  F16K15/12 ,  Y10T137/786 ,  Y10T137/7864

摘要： A sealing apparatus for use in a compressor suction or pressure plate valve having a seat member with a plurality of fluid passage ports therethrough. The sealing apparatus comprises a movable plastic plate member having a like plurality of sealing members for juxtaposed sealing engagement with the plurality of fluid passage ports and at least one projection integrally formed on at least one of the sealing members and extending outwardly from the plate member in a direction away from the seat member for receiving a resilient flat spring member urging the plate member against and sealing the fluid passage ports.

摘要翻译： 一种用于压缩机吸入或压力板阀的密封装置，其具有带有多个通过其的流体通道的座椅构件。 密封装置包括具有相同多个密封构件的可移动塑料板构件，用于与多个流体通道端口并置密封接合，以及至少一个突出部，其一体地形成在至少一个密封构件上并从板构件向外延伸 远离座椅构件的方向，用于接收将板构件推压并密封流体通道端口的弹性扁平弹簧构件。

公开(公告)号：US4984361A

公开(公告)日：1991-01-15

申请号：US353158

申请日：1989-05-15

申请人： Derek Woollatt ,  George J. Safford

发明人： Derek Woollatt ,  George J. Safford

IPC分类号： B29C45/00 ,  F04B39/10 ,  F16K15/12

CPC分类号： F04B39/1053 ,  B29C45/00 ,  F16K15/12 ,  Y10T29/49412 ,  Y10T29/49416

摘要： A sealing apparatus for use in a compressor suction or pressure plate valve having a seat member with a plurality of fluid passage ports therethrough. The sealing apparatus comprises a movable plastic plate member having a like plurality of sealing members for juxtaposed sealing engagement with the plurality of fluid passage ports and at least one projection integrally formed on at least one of the sealing members and extending outwardly from the plate member in a direction away from the seat member for receiving a resilient flat spring member urging the plate member against and sealing the fluid passage ports.

摘要翻译： 一种用于压缩机吸入或压力板阀的密封装置，其具有带有多个通过其的流体通道的座椅构件。 密封装置包括具有相同多个密封构件的可移动塑料板构件，用于与多个流体通道端口并置密封接合，以及至少一个突出部，其一体地形成在至少一个密封构件上并从板构件向外延伸 远离座椅构件的方向，用于接收将板构件推压并密封流体通道端口的弹性扁平弹簧构件。

公开(公告)号：USD336679S

公开(公告)日：1993-06-22

申请号：US460716

申请日：1990-01-04

申请人： George J. Safford ,  Gene R. Bluhm

设计人： George J. Safford ,  Gene R. Bluhm

公开(公告)号：US4116894A

公开(公告)日：1978-09-26

申请号：US701711

申请日：1976-07-01

申请人： James A. Lentz ,  George J. Safford

发明人： James A. Lentz ,  George J. Safford

IPC分类号： G03B15/14 ,  H01B3/00 ,  C08K5/19 ,  C08L23/02 ,  C08L23/26

CPC分类号： G03B15/14 ,  H01B3/004 ,  Y10T428/31511 ,  Y10T428/31931

摘要： Butadiene copolymers having controlled electrical life and controlled resistivity are described. A method is disclosed for enhancing the electrical life of butadiene copolymers having solubilized conductivity control agents incorporated therein by varying specified quantities of terminally unsaturated hydrocarbon nitriles in copolymers of the butadiene and the specified nitriles by using mixtures of such copolymers having conductivity control agents therein. The method and polymers are useful for enhancing the electrical life and polymer stability in xerographic devices where control of conductivity and/or relaxation behavior is important, e.g., in bias transfer rolls.

摘要翻译： 描述了具有受控电寿命和受控电阻率的丁二烯共聚物。 公开了一种通过使用其中具有导电性控制剂的这种共聚物的混合物，通过在丁二烯和特定腈的共聚物中改变规定量的末端不饱和烃腈来改善掺入其中的溶解的电导率控制剂的丁二烯共聚物的电寿命的方法。 该方法和聚合物可用于增强静电印刷设备中的电寿命和聚合物稳定性，其中电导率和/或松弛行为的控制是重要的，例如在偏压传输辊中。

公开(公告)号：US4058879A

公开(公告)日：1977-11-22

申请号：US701710

申请日：1976-07-01

申请人： James A. Lentz ,  George J. Safford

发明人： James A. Lentz ,  George J. Safford

IPC分类号： C08G18/69 ,  C08K5/19 ,  G03G15/16 ,  B60B5/00 ,  B32B27/40 ,  G03G13/14

CPC分类号： G03G15/1685 ,  C08G18/69 ,  C08K5/17 ,  C08K5/19 ,  Y10S101/37 ,  Y10T428/31583 ,  Y10T428/31587 ,  Y10T428/31917 ,  Y10T428/31928 ,  Y10T428/31931 ,  Y10T428/31935

摘要： Butadiene copolymers having controlled electrical life and controlled resistivity are described. A method is disclosed for enhancing the electrical life of butadiene copolymers having solubilized conductivity control agents incorporated therein by varying specified quantities of terminally unsaturated hydrocarbon nitriles in copolymers of the butadiene and the specified nitriles by using mixtures of such copolymers having conductivity control agents therein. The method and polymers are useful for enhancing the electrical life and polymer stability in xerographic devices where control of conductivity and/or relaxation behavior is important, e.g., in bias transfer rolls.

摘要翻译： 描述了具有受控电寿命和受控电阻率的丁二烯共聚物。 公开了一种通过使用其中具有导电性控制剂的这种共聚物的混合物，通过在丁二烯和特定腈的共聚物中改变规定量的末端不饱和烃腈来改善掺入其中的溶解的电导率控制剂的丁二烯共聚物的电寿命的方法。 该方法和聚合物可用于增强静电印刷设备中的电寿命和聚合物稳定性，其中电导率和/或松弛行为的控制是重要的，例如在偏压传输辊中。

公开(公告)号：USD336680S

公开(公告)日：1993-06-22

申请号：US460717

申请日：1990-01-04

申请人： George J. Safford ,  Gene R. Bluhm

设计人： George J. Safford ,  Gene R. Bluhm

公开(公告)号：US4889156A

公开(公告)日：1989-12-26

申请号：US86526

申请日：1987-08-17

申请人： Derek Woolatt ,  George J. Safford

发明人： Derek Woolatt ,  George J. Safford

IPC分类号： B29C45/00 ,  F04B39/10 ,  F16K15/12

CPC分类号： B29C45/00 ,  F04B39/1053 ,  F16K15/12 ,  Y10T137/786 ,  Y10T137/7864

摘要： A sealing apparatus for use in a compressor suction or pressure plate valve having a seat member with a plurality of fluid passage ports therethrough. The sealing apparatus comprises a movable plastic plate member having a like plurality of sealing members for juxtaposed sealing engagement with the plurality of fluid passage ports and at least one projection integrally formed on at least one of the sealing members and extending outwardly from the plate member in a direction away from the seat member for receiving a resilient flat spring member urging the plate member against and sealing the fluid passage ports.

公开(公告)号：US4086650A

公开(公告)日：1978-04-25

申请号：US748805

申请日：1976-12-08

申请人： Thomas G. Davis ,  George J. Safford

发明人： Thomas G. Davis ,  George J. Safford

IPC分类号： G03G15/02 ,  H01T19/00 ,  H05F3/04

CPC分类号： G03G15/0291

摘要： A corona discharge device including a corona discharge electrode and a conductive shield located adjacent the electrode, the electrode being coated with relatively thick dielectric material so as to substantially prevent the flow of conduction current therethrough. The delivery of charge to the photoconductive surface is accomplished by means of a displacement current or capacitative coupling through the dielectric material. The flow of charge to the surface to be charged is regulated by means of a d.c. bias applied to the corona shield.

摘要翻译： 一种电晕放电装置，包括电晕放电电极和位于电极附近的导电屏蔽层，该电极被涂覆有较厚的电介质材料，以便基本上防止传导电流通过其中。 通过位移电流或通过电介质材料的电容耦合来实现电荷传输到光电导表面。 通过直流电流来调节充电表面的电荷流量。 施加到电晕屏蔽上的偏置。

公开(公告)号：USD336509S

公开(公告)日：1993-06-15

申请号：US460720

申请日：1990-01-04

申请人： George J. Safford ,  Gene R. Bluhm

设计人： George J. Safford ,  Gene R. Bluhm