Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7143840 | Impact tool An impact tool enables a front cover part to be easily attached to and detached from a housing body, with a device having a simplified structure. The front cover part has an annular fastening portion clamped to the outer peripheral surface of a front edge portion of... | 12/05/2006 |
| 7096974 | Handle for a hand-held power tool A hand-held power tool including a tool spindle (12) having a motor (6) for driving the tool spindle (12), a handle (18) having a forwardly inclined position in which the handle (18), starting from the spindle axis (W) is inclined,... | 08/29/2006 |
| 7013986 | Impact tool An impact tool enables a front cover part to be easily attached to and detached from a housing body, with a device having a simplified structure. The front cover part has an annular fastening portion clamped to the outer peripheral surface of a front edge portion of... | 03/21/2006 |
| 6938706 | Power tool provided with a locking mechanism A power tool (2) has a first body (6), a second body (4) connected to the first body (6), and a locking mechanism. One of the bodies (4;6) is moveable with respect to the other body (4;6). The locking mechanism is capable of... | 09/06/2005 |
| 6467321 | Device for ultrasonic peening of metals A device for ultrasonic peening of metals is intended for strengthening and relaxation treatment of metal surfaces with an ultrasonic oscillation and includes an ultrasonic generator (1) having the optimized power of from 0.2 to 0.5 kW, a piezoelectric tr... | 10/22/2002 |
| 5267382 | Scaling needle gun shroud A needle scaling device for environmentally safe removal of material such as lead paint or the like, from difficult to clean surfaces, such as bridges. The needle scaling device includes a plurality of reciprocably movable needles which strike the surface... | 12/07/1993 |
| 5010632 | Descaling device A descaling tool for use with a reciprocating hammer for removing foreign substances from metal, wood, stone, or the like. The tool is comprised of an elongated shank, one end having an adapter for receipt into a reciprocating hammer, the other having a b... | 04/30/1991 |
| 4947532 | Scaler holder A holder for a plurality of scalers including a rectangular tube 2 forming the main body portion and including coaxial bores in opposite walls 8,10 to secure the scalers 14 and permit easy removal and axial adjustment of individual tools.... | 08/14/1990 |
| 4940289 | Scabbler for scabbling floors contaminated with hazardous materials A manually steerable machine for scabbling areas which are relatively inaccessible to larger machines is disclosed. Three pneumatically operable piston and cylinder assemblies with bits are mounted on a plate which is mounted in vertically movable relatio... | 07/10/1990 |
| 4805826 | Slag removing apparatus for pad-welding machine Described herein is a slag removing apparatus suitable for use on a padi-welding machine, which permits automation of the pad-welding operation and which essentially includes: a C-shaped roller holder located beneath a movable welding torch and provided w... | 02/21/1989 |
| 4723610 | Percussion device The percussion mechanism of this device, comprising a cylinder, a free piston, an anvil, a tool holder in which a bundle of needles is disposed, the heads of which are applied to the anvil, is mounted to slide in a tubular housing between two springs used... | 02/09/1988 |
| 4694546 | Apparatus for stripping paint An apparatus is disclosed for stripping paint which includes a plurality of rapidly reciprocating needle chisels to strike paint off an article and a pair of brush-polishers to polish the surface of the article so that subsequent paint layers do not adher... | 09/22/1987 |
| 4632190 | Pneumatically-operated multi-needle chisel tool A pneumatically-actuated multi-needle type chisel tool is provided having a hollow cylinder body, a piston ram fitted for axially reciprocal movement in a rearward portion of the cylinder body, an anvil fitted for axially reciprocal movement in an interme... | 12/30/1986 |
| 4630687 | Percussion device A pneumatic hammer comprises a cylindrical housing, in which are a free piston, an anvil, and needles the rear ends of which end in heads designed to rest against the anvil and supported by a tool holder. The anvil comprises a steel cylinder in the latera... | 12/23/1986 |
| 4605073 | Device in needle hammers A device in pressure medium operated needle hammers, the needles (24) being arranged in a reciprocatingly movable working member (3) by at least one flexible holder member (31, 39) and, by a friction grip of the holder member being caused to follow the mo... | 08/12/1986 |
| 4601350 | Electrically-operated multi-needle chisel tool An electrically-operated multi-needle chisel tool including a housing having a front portion and a rear portion. An electric motor is mounted in the rear portion. A cylinder extends forwardly from the front portion of the housing. A piston is disposed in ... | 07/22/1986 |
| 4593767 | Impact device Impact device comprising a housing with a rotatable impeller located eccentrically therein. The impeller includes masses located in radial apertures which, upon rotation of the impeller, are caused to strike the head of an impact tool extending at least p... | 06/10/1986 |
| 4326823 | Rotating cutting tool The invention relates to cutting tools for metal working. The claimed cutting tool (needle-cutter) comprises cutting elements assembled at least into two sets and presenting essentially pieces of wire. The cutting elements are fastened to one another at o... | 04/27/1982 |
| 4183113 | Rotary scraper An improved rotary scraper having a central rotatable hub and a plurality of scraper members pivotally attached to said hub and extending outwardly therefrom for sliding engagement with and at an angle to a work surface is provided. The scraper members ea... | 01/15/1980 |
| 4134193 | Surface-cleansing tool A cluster of pins, serving to clean the surface of a workpiece, are slidably mounted in bores of a guide plate which is spring-urged against a metallic anvil, with formation of a clearance between the plate and the anvil in which the heads of the pins can... | 01/16/1979 |
| 3942208 | Rotary cleaning device A rotary cleaning device comprising a cup-shaped rotatable base member, a cylindrical resilient mounting received in the cup-shaped member, a plurality of elongated cleaning elements essentially in the form of wood screws mounted in the resilient mounting... | 03/09/1976 |
| 3937055 | Method of peening and portable peening gun An improved portable peening gun characterized by a pneumatic motor, an axially reciprocable hammer supported to be driven by the motor from an initial position along a linear path, and an improved peening head including an axially reciprocable rod bundle... | 02/10/1976 |
