https://www.datamp.org/ Recently added patents en-us https://www.datamp.org/patents/displayPatent.php?id=85830&pn=6,477,921 Anti-jamming coupling device for powered adjustable wrench Patentee: John C. Picone - Oceanside NY Granted:2002-11-12
Manufactured by Picone Products, Inc. - Louisburg NC

Improvement to the design in 4,512,221. The motor and drive means are improved, a one-piece frame is presented. Several alternative arrangements for power supply, batteries, etc. are also set forth, along with alternate structural details. From the Summary; "The present invention is an improvement over the powered adjustable jaw wrench of the prior art disclosed in U.S. Pat. No. 4,512,221 incorporated herein by reference. It is therefore an object of the present invention to provide for a novel and improved powered adjustable jaw wrench including an anti-jamming coupling device provided for un-jamming the wrench when "binding" occurs between a gear rack of an adjustable jaw and a worm gear." Prior patents 2,615,682, 3,613,983 and 4,512,221 are cited as references. This patent together with 4,512,221 and "Made in China" appear on a known example of the ZipWrench.
This is one of 85,120 patents currently in the database at datamp.org

]]> 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

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. The frame in this design is pieces held together by screws. A known example marketed as ZipWrench is marked with this patent and 6,477,921. Made in China and apparently marketed in the U.S. by Picone Products, Inc. Wells & Wells - patent attorneys
This is one of 85,120 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 85,120 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 85,120 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 85,120 patents currently in the database at datamp.org

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