https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=29518&pn=4,512,221 Electric Powered Adjustable Wrench Patentee: John A. Picone - Island Park NY Granted:1985-04-23

Wells & Wells - patent attorneys Abstract An adjustable jaw end wrench, in which the adjustable jaw is operated by a worm gear, the worm gear is meshed with the rack of the movable jaw and the worm gear is driven by an electric motor. Linear motion propelling the jaw open and/or closed is produced by the electric motor. Batteries in the handle provide the power for the electric movement and a DPDT (Double Pole Double Throw) switch controls the function of the wrench.
This is one of 85,119 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85829&pn=748,241 Screw and Driver Therefor Patentee: Edwin L. Walter - Scranton PA Granted:1903-12-29

From the Patent description : The primal intent of this invention is to insure firm and positive connection between a screw and its driver without necessitating the expenditure of a great amount of energy to hold the driver in engagement with the screw when turning same, thereby enabling a greater amount of energy to be utilized for effective Work without useless labor and unnecessary fatigue of the operator. The invention provides a novel form of interlocking joint between the screw and its driver, whereby a small amount of force serves to prevent slipping of the driver when in service. The joint comprises an axiallyinclined slot in the head of the screw and a correspondingly-inclined point or hit at the end of the driver, whereby when the screw and driver are held in longitudinal alinement with the said inclined point fitted in the said axially-inclined slot they are interlocked and held against longitudinal displacement.
This is one of 85,119 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85828&pn=1,239,961 Screw-Driver Patentee: Henry W. Pomeroy - Northhampton MA Granted:1917-04-11


This is one of 85,119 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85827&pn=772,593 Screw-Driver Patentee: Paul A. Wagner - Carlstadt NJ Granted:1904-10-18


This is one of 85,119 patents currently in the database at datamp.org

]]> https://www.datamp.org/patents/displayPatent.php?id=85826&pn=456,341 Reversible Screwdriver Patentee: James Reid Jr. - Seymour CT Granted:1891-07-21
Assigned to One Half to William Hagen - Troy NY


This is one of 85,119 patents currently in the database at datamp.org

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