Disclosed is a hand held, cordless electric, coping saw, which has a "U"-frame with a handle at one end of the "U". A battery and motor power the saw. The blade of the saw is endless and is round cylinder-type flexible blade trained in a generally rectangular loop about four wheels, one mounted in each corner of the "U", three of them idle wheels and one of them functioning as the drive wheel. The drive wheel is located at the handle end corner of the "U". At the other end of the "U", the frame has a "floating" corner piece housing one of the idler wheels and being spring biased away from the main part of the frame to provide saw blade tensioning.
Method Of Manufacturing Collinear Terminated Transmission Line Structure With Thick Film Circuitry
John F. Casey - Colorado Springs CO Ronald W. Schroeder - Monument CO Lewis R. Dove - Monument CO Philip J. Yearsley - Colorado Springs CO
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
H01C 1706
US Classification:
29620
Abstract:
A collinear terminated transmission line structure and method for producing same is presented. The structure comprises a plurality of conductors electrically connected to a plurality of resistors. A predetermined spacing between each of the plurality of conductors ranges from 2 mils to 7 mils. Greater spacings are easily accomplished with the present method. The method comprises the steps of screen-printing a resistor swath onto a substrate, the swath being adjacent to one end of the plurality of conductors. After the substrate is dipped into a solution, the resistor swath is laser trimmed to form the plurality of resistors. The substrate is then rinsed with warm water to remove the solution. The solution can be a poly-vinyl alcohol and isopropyl alcohol mixture.
John F. Casey - Colorado Springs CO Ronald W. Schroeder - Monument CO Lewis R. Dove - Monument CO Philip J. Yearsley - Colorado Springs CO
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
H05K 116 H01C 700
US Classification:
361766
Abstract:
A collinear terminated transmission line structure and method for producing same is presented. The structure comprises a plurality of conductors electrically connected to a plurality of resistors. A predetermined spacing between each of the plurality of conductors ranges from 2 mils to 7 mils. Greater spacings are easily accomplished with the present method. The method comprises the steps of screen-printing a resistor swath onto a substrate, the swath being adjacent to one end of the plurality of conductors. After the substrate is dipped into a solution, the resistor swath is laser trimmed to form the plurality of resistors. The substrate is then rinsed with warm water to remove the solution. The solution can be a poly-vinyl alcohol and isopropyl alcohol mixture.