https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=85345&pn=2,647,312 Hand Tool Patentee: Ernest C. Neal - Chicago IL Granted:1953-08-04
Manufactured by King Cutter Corp. - Skokie IL
Assigned to Elmer Brandell - Chicago IL

The patent deals with lever construction in relation to "power application" in cutting and clamping tools. The construction includes cams. The drawings and specifications show the construction in a cutter. The construction was used in the "KING CUTTER," produced at Skokie, IL. The patent cites 908,790, 1,435,131, 1,453,864 and 2,385,835 as references.
This is one of 84,642 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=83709&pn=190,002,533 Improvements in Machines for Cutting the Teeth of Gear Wheels Patentee: none listed - Providence, Providence County RI Granted:1900-10-13
Manufactured by Brown & Sharpe Mfg. Co. - Providence, Providence County RI
Assigned to Brown & Sharpe Mfg. Co. - Providence, Providence County RI

Abstract: he machine is for cutting the teeth of spur gears, and especially spiral gears. The primary object of the invention is to provide an efficient machine for cutting spiral gears in which the various operations arc automatically performed, and a further object is- to provide a machine of this character which is adapted to cut spiral gears of varying pitch, diameter, and lead. In cutting spiral gears, the gear blank is secured upon a rotary support and is acted upon by a rott^ cutter, the axis of which is at an angle to the axis of the gear blank depending upon the diameter of the gear blank and the lead of the teeth to be cut. The blank is rotated, and either the cutter support or the blank support advanced in a direction parallel to the axis of the blank so that the centre of the cutter always lies in the same plane passing through the axis of the blank. The rotary movement of the work is in a definite ratio to the advance movement between the cutter and work, which ratio depends upon the lead of the gear being cut, and this ratio is preferably accurately maintained by gearing the work support to the reciprocating support. On the return movement of the reciprocating support the cutter should be out of cutting relation, and this is preferably accomplished by moving the cutter out of cutting relation, although so far as certain features on the invention are concerned. it may be accomplished by moving the blank support. After each cut the blank is given a partial rotation or indexed to bring the blank into position for the next cut, and the mechanism for thus indexing the blank is preferably so constructed that the blank is indexed without disconnecting the mechanism which rotates the blank during the action of the cutter.
This is one of 84,642 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=15521&pn=173,802 Improvement in Calipers and Dividers Patentee: Thomas McDonough - Montclair NJ Granted:1876-02-22
Manufactured by Star Tool Company - Middletown CT
Assigned to Star Tool Company - Middletown CT

This design features a new way of fixing the legs in a calipers. In addition to the usual "firm joint", these calipers also have a thumbscrew to hold them in position.
This is one of 84,642 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85337&pn=D332,227 Digital Multimeter Patentee: Steven T. Kaneko - Seattle, King County WA Granted:1993-01-05
Manufactured by John Fluke Mfg. Co. - Everett, Snohomish County WA
Assigned to John Fluke Mfg. Co. - Everett, Snohomish County WA

Description: FIG. 1 is a front elevational view of a digital multimeter showing my new design; FIG. 2 is a right side elevational view, the left side elevational view being a mirror image; FIG. 3 is a top plan view; FIG. 4 is a bottom plan view; and, FIG. 5 is a rear elevational view thereof. Claims: The ornamental design for a digital multimeter, as shown.
This is one of 84,642 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85336&pn=5,097,196 Zero-voltage-switched Multiresonant DC To DC Converter Patentee: George K. Schoneman - Cedar Rapids, Linn County IA Granted:1992-03-17
Manufactured by John Fluke Mfg. Co. - Everett, Snohomish County WA
Assigned to Rockwell International Corp. - El Segundo, Los Angeles County CA

Abstract: A multiresonant DC to DC converter which operates at a substantially fixed frequency yet maintains relatively constant efficiency levels despite wide variations in input voltage. The multiresonant converter includes a first transistor switch in series with the DC voltage supply source and the load and a second transistor switch in parallel with the DC voltage supply source and the load. The switching action of the first transistor switch is controlled as a function of the supply voltage input to the converter while the duty factor of the second transistor switch is controlled in accordance with the output voltage of the converter. Claim: A zero-voltage-switched multiresonant converter for generating a regulated DC output voltage for supply to a load from a DC input voltage provided by a DC voltage source, comprising: a first transistor switch connected in series with said DC voltage source and said load; a second transistor switch connected in parallel with said DC voltage source and said load; a first capacitor connected in parallel with said first transistor switch; a second capacitor connected in parallel with said second transistor switch; a first inductor connected in series with said DC voltage source, said load and both of said first and second transistors switches; means coupled to the gate of said first transistor switch for controlling switching of said first transistor switch as a function of the input voltage provided by said voltage source to said converter for stabilizing the current through said first inductor; and means coupled to the gate of said second transistor switch for controlling switching of said second transistor switch as a function of the output voltage of said converter.
This is one of 84,642 patents currently in the database at datamp.org

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