公开(公告)号：US4754309A

公开(公告)日：1988-06-28

申请号：US889368

申请日：1986-07-25

申请人： Robert J. Lesko

发明人： Robert J. Lesko

IPC分类号： G03B27/20

CPC分类号： G03B27/20

摘要： A vacuum frame for exposing a light-sensitive sheet to a light pattern according to a negative includes a blanket frame having peripherally bonded thereto a platen and a blanket with the platen being bowable and the blanket being flexible. The platen and blanket are peripherally sealingly bonded to one another, forming a vacuum chamber therebetween. A light transmissive frame mounted to the blanket frame for movement toward and away from the blanket and a spacing and sealing means peripherally interposed between the blanket and the light transmissive frame when the light transmissive frame is moved toward the blanket define an exposure chamber with the blanket. The exposure chamber is adapted to receive a light sensitive sheet and negative.A first vacuum inlet means connects the vacuum chamber to an evacuation means, and a second vacuum inlet means connects the exposure chamber to an evacuation means. A control means evacuates the vacuum chamber to hold the blanket to the platen and evacuates the exposure chamber while said blanket is held to said platen. When the vacuum in the exposure chamber reaches a high level, the platen bows, center-first, toward the light transmissive frame, forcing the blanket toward the light transmissive frame and forcing an interposed light sensitive sheet and negative into air-bubble-free contact with the light transmissive frame.

摘要翻译： 用于将感光片材暴露于根据负片的光图案的真空框架包括具有周向地结合到其上的压板和毯子的橡皮布框架，所述压板可弯曲并且所述毯子是柔性的。 压板和橡皮布在外周密封地结合，在它们之间形成真空室。 安装到橡皮布框架上以便朝向和远离橡皮布移动的透光框架和当透光框架朝向毯子移动时周向插入橡皮布和透光框架之间的间隔和密封装置限定了具有橡皮布的曝光室 。 曝光室适于接收感光片和负片。 第一真空入口装置将真空室连接到排气装置，第二真空入口装置将曝光室连接到排气装置。 控制装置抽出真空室以将橡皮布保持在压板上，并将所述橡皮布保持在所述压板上的同时抽空曝光室。 当曝光室中的真空度达到高水平时，压板以中心向前朝向透光框架弯曲，迫使橡皮布朝向透光框架，并迫使插入的感光片和负片进入无气泡接触 与透光框架。

公开(公告)号：US20210151011A1

公开(公告)日：2021-05-20

申请号：US17083003

申请日：2020-10-28

申请人： Robert J. Lesko

发明人： Robert J. Lesko

IPC分类号： G10D3/12 ,  G10D3/04 ,  G10D3/06 ,  G10D1/08 ,  G10D3/14

摘要： The retainer for securing a musical instrument string to a body of a musical instrument includes a first casing portion defining a first opening and a ball-end chamber therein. The first opening is located at a proximal end of the retainer and a second casing portion is located at a distal end of the first casing portion. The second casing portion defines a passageway from the ball-end chamber to a second opening located at a distal end of the retainer. The passageway length is greater than the ball-end chamber length, and the ball-end chamber width is greater the passageway width.

公开(公告)号：US5351106A

公开(公告)日：1994-09-27

申请号：US724336

申请日：1991-07-01

申请人： Robert J. Lesko ,  Ira J. Pitel

发明人： Robert J. Lesko ,  Ira J. Pitel

IPC分类号： G03B27/20 ,  G03B27/73 ,  G03B27/80

CPC分类号： G03B27/20 ,  G03B27/735

摘要： An exposure system for light sensitive materials held in a vacuum frame includes an electrical light source and a power supply to the light source, the power supply having a power consumption monitor so it can modify the power supplied to the light source to compensate for any fluctuations in power consumption by the light.The light source is supported in a housing having air exhaust openings proximate the mid-portion of the light source. A blower cools the light source with a helical airflow. The voltage drop across the electrical light source is used to control the speed of the blower to maintain the voltage of the light source at a desired level. The housing has an open face and a removable pane. An indicator indicates the presence of the pane. A metal shutter in the housing has a black ceramic surface adjacent the light source to selectively expose light sensitive materials. A control means closes the shutter when the indicator senses removal of the pane while power is being supplied to the light source. The control means includes a timer to hold the shutter closed for a period of time after the switch is opened, long enough to permit cooling of the light source and opens the shutter after expiration of the period. It also actuates the blower during the period to hasten the cooling of the light source.The control unit to control operating parameters of a plurality of subsystem units of the exposure system includes an electronic memory unit and means responsive to signals stored in the electronic memory unit to control variables. The control lines of the control unit and the subsystem units have a plurality of physically equivalent, but electrically unique, pin socket outputs each having a plurality of electrical leads. A plurality of cables having physically and electrically identical terminations are provided, so that any of the cables may be used to connect a pin socket of the control unit to a pin socket of a subsystem unit.The control unit includes a keyboard input to the memory storage means of variables to be stored. The keyboard includes function keys to select the variable to be assigned a value and numeric keys to assign a numeric value to a selected numeric variable.

公开(公告)号：US4455510A

公开(公告)日：1984-06-19

申请号：US380463

申请日：1982-05-20

申请人： Robert J. Lesko

发明人： Robert J. Lesko

IPC分类号： H05B41/22 ,  H05B41/38

CPC分类号： H05B41/22 ,  H05B41/384 ,  Y02B20/206 ,  Y10S315/07

摘要： A high intensity discharge ballast that provides instant restrike of hot high intensity lamps, rapid warm-up and normal ballasting functions so as to circumvent the deficiencies of heating and cooling cycles in high intensity discharge lamps which cycles are unacceptable in special applications such as graphic arts and stadium lighting.

摘要翻译： 高强度放电镇流器，提供热高强度灯的即时再起弧，快速预热和正常的镇流功能，以避免高强度放电灯中的加热和冷却循环的不足，这些循环在特殊应用中是不可接受的，例如图形艺术 和体育场照明。

公开(公告)号：US11600247B2

公开(公告)日：2023-03-07

申请号：US17083003

申请日：2020-10-28

申请人： Robert J. Lesko

发明人： Robert J. Lesko

IPC分类号： G10D3/12 ,  G10D3/04 ,  G10D3/14 ,  G10D1/08 ,  G10D3/06

摘要： The retainer for securing a musical instrument string to a body of a musical instrument includes a first casing portion defining a first opening and a ball-end chamber therein. The first opening is located at a proximal end of the retainer and a second casing portion is located at a distal end of the first casing portion. The second casing portion defines a passageway from the ball-end chamber to a second opening located at a distal end of the retainer. The passageway length is greater than the ball-end chamber length, and the ball-end chamber width is greater the passageway width.

公开(公告)号：US6129963A

公开(公告)日：2000-10-10

申请号：US709579

申请日：1996-09-09

申请人： Robert J. Lesko ,  Shannon K. Lesko

发明人： Robert J. Lesko ,  Shannon K. Lesko

IPC分类号： B42D15/00 ,  G03G8/00

CPC分类号： G03G8/00 ,  B42D15/00 ,  Y10T428/14 ,  Y10T428/1405 ,  Y10T428/1452 ,  Y10T428/1467 ,  Y10T428/1471 ,  Y10T428/1476 ,  Y10T428/1481 ,  Y10T428/1486 ,  Y10T428/24851 ,  Y10T428/24876 ,  Y10T428/31786 ,  Y10T428/3179

摘要： The present invention relates to a laminated article and a method for making the article. An imageable film is printed on a first side with an image created in a computer. The image can be black and white or color. The imageable film can be transparent or white. The image containing film is then overlaid with a transparent laminate layer to protect the image from weather, abrasion and wear. A colored substrate may be applied on a second side of the imageable film to create a colored sign. The colored substrate may also be used to introduce special effects to the appearance of the finished laminated article.

摘要翻译： 本发明涉及层压制品及其制造方法。 在第一面上印刷可成像的胶片，并在计算机中创建图像。 图像可以是黑色或白色或彩色。 可成像胶片可以是透明或白色。 然后将含图像的膜叠加在透明层压层上，以保护图像免受天气，磨损和磨损。 可以在可成像膜的第二面上施加着色的基底以产生有色标志。 有色基材也可用于对成品层压制品的外观引入特殊效果。