Did You Know...
...that in the early 1940s GE engineer James Wright was charged with a task of utmost importance to the war effort: develop a cheap substitute for rubber that could be used to produce tires, gas masks and a whole host of military gear. Wright tackled the task diligently -- and wound up inventing Silly Putty.
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| Number | Title | Issue Date |
| 7588095 | Outer bearing retention structures for ratchet hammer mechanism Provided are various embodiments of structures that may utilized in a power driver, particularly in a power driver having an optional reciprocating “hammer” action, that may be utilized for retaining an outer bearing during driver assembly and during subsequent ... | 09/15/2009 |
| 7581599 | Percussive device for a rock drilling machine, method for achieving a reciprocating piston movement and rock drilling machine A percussion device (1) with a reciprocating percussion piston (3), includes a first chamber (5) that can be pressurized for forward driving of the percussion piston (3) and a second chamber (8) that can be periodically pressurized... | 09/01/2009 |
| 7441608 | Percussion device with a transmission element compressing an elastic energy storing material A percussion device for a rock drilling machine or the like, which includes providing an impact, i.e. a stress pulse, to a tool connected to the percussion device. The the stress pulse is provided by way of a stress element of liquid, which is supported to a body of... | 10/28/2008 |
| 7392855 | Vibratory pile driving systems and methods A drive system for driving and/or extracting an elongate member. The drive system comprises a piston drive assembly, a hydraulic system, and a vibration drive assembly. The piston drive assembly comprises a piston member, and the piston member engages the elongate m... | 07/01/2008 |
| 7389603 | Modular sign post A modular signpost including a first section, a second section that mounts onto the first section, and a third section that mounts onto the second section. The first section includes a ground mounting structure, a base tube and a guide tube. The second section inclu... | 06/24/2008 |
| 7367397 | Downhole impact generator and method for use of same A downhole impact generator (60) is adapted to be moved to a target location within a wellbore (68) for transmitting a jarring force to a well tool (72) positioned in the wellbore (68). The downhole impact generator (60) includes a... | 05/06/2008 |
| 7347282 | Steerable soil penetration system A steerable soil penetration system having a steerable penetration head, which compacts and does not cut away the surrounding soil and which is connected to an elongate flexible tubing such that the orientation of the penetration head can be varied relative to the t... | 03/25/2008 |
| 7325625 | Floor covering removal and impact tool An impact tool particularly useful for floor removal material includes an elongated removable rod having an upper end and a lower end. A handle is connected to the upper end of the rod, and an anvil is fixed to the lower end of the rod. A collar is mounted above the... | 02/05/2008 |
| 7318266 | Method of hanging an object A hammer hanger is useful for hanging objects off the ground. The hammer hanger includes a Slide hammer tube that impacts a stake to insert the stake into and remove it from the ground. The slide hammer comprises a slide hammer tube that is slidingly captured on the... | 01/15/2008 |
| 7308949 | Concrete drill A concrete drill for drilling concrete or the like by a diamond bit (5) attached to a front end of a bit drive shaft (4) projected forward from a main body (1) by driving to rotate the bit drive shaft (4) by a drive source (2) cont... | 12/18/2007 |
| 7303027 | Grounding rod driving system A grounding rod driving system for facilitating installation and extraction of a grounding rod includes a sleeve slidably receiving a grounding rod. The sleeve slides along the grounding rod when the grounding rod is being driven into a support surface. A driver is ... | 12/04/2007 |
| 7299872 | Hydraulic-mechanical jar tool A jar mechanism comprises a housing having a fluid chamber therein, a piston encircled by an annular metering sleeve and movably mounted in the fluid chamber for movement between a first position and a second position, and a jar member moveably mounted in the housin... | 11/27/2007 |
| 7290622 | Impact device with a rotable control valve An impact device includes a frame to which a tool is connectible, and a stress element that is supported on the frame and disposed between the frame and the tool. A hydraulic control system leads pressurized hydraulic fluid into and out of a hydraulic fluid space su... | 11/06/2007 |
| 7273113 | Reversible penetrating machine with a differential air distributing mechanism The invention represents a new design of a reversible penetrating machine (90) with a pneumatically controlled differential air distributing mechanism. This design eliminates the springs, the rear anvil assembly, and several other components found in the prior machi... | 09/25/2007 |
| 7263920 | Torque impact wrench A torque impact wrench having an elongated tubular metal housing. The front end of an impact wrench is secured to the rear end of the housing by a motor mount. The front end of the drive shaft of the impact wrench is inserted into the rear of an impact socket. The r... | 09/04/2007 |
| 7255516 | Method and apparatus for replacement of underground pipe An impactor for use with a directional boring machine for replacement of underground pipes includes a bursting head having a rearwardly opening recess and a front end opening that communicates with the recess. An inlet pipe is connected at its front end to a distal ... | 08/14/2007 |
| 7252154 | Percussion device with a transmission element compressing an elastic energy storing material A percussion device for a rock drilling machine or the like, which comprises means for providing an impact, i.e. a stress pulse, to a tool connected to the percussion device. The means for proving the stress pulse include a stress element (4) of liquid, which... | 08/07/2007 |
| 7234417 | Tethering device A tethering device (10) comprising a support member (12) and a rotatable member (14) rotatably mounted on the support member (12) and about which a flexible tether line (16) can be wound for tethering an animal or object to the sup... | 06/26/2007 |
| 7215412 | Flagpole reflectors for laser range finders A system and method are provided for determining a distance to a target. The method includes sending light, at a first time, to a light reflector mounted in a reflector device, receiving light reflected from the light reflector at a second time, and determining the ... | 05/08/2007 |
| 7207247 | Hammer head wrench An L-shaped wrench with a handle and a shank attached to a hammer head. The hammer head may be hexahedral with the handle and shank attached to adjacent flats with opposing flats forming impact surfaces for applying an axial force along the handle or shank with an i... | 04/24/2007 |
| 7204321 | Concrete drill A concrete drill for drilling concrete or the like by a diamond bit (5) attached to a front end of a bit drive shaft (4) projected forward from a main body (1) by driving to rotate the bit drive shaft (4) by a drive source (2) cont... | 04/17/2007 |
| 7175141 | Removable sign support system A removable sign support system for supporting a sign on the ground includes a substantially upright support post, configured to removably receive a sign post. The support post has a substantially horizontal base affixed to its bottom end, with a plurality of spikes... | 02/13/2007 |
| 7159676 | Fluid distributor device for down-hole-drills A fluid distributor device is for a percussive drill assembly including a generally tubular casing (2) having a longitudinal centerline and a piston (6) disposed within the casing so as to define a reservoir chamber (27) in the casing. The distr... | 01/09/2007 |
| 7156189 | Self mountable and extractable ultrasonic/sonic anchor Self drilling anchors and related methods and apparatus. In one embodiment an apparatus comprises a drill bit, a hammer mechanism for hammering the drill bit in a first direction and in a second direction, and a selection mechanism for controlling whether, at a give... | 01/02/2007 |
| 7152692 | Hydraulic hammer having a sealing bushing A hydraulic hammer having a sealing bushing includes a percussion piston that delivers strokes to a tool. A lower part of the percussion piston is sealed with respect to a frame by the sealing bushing, which includes one or more lower seals. The sealing bushing does... | 12/26/2006 |
| 7152694 | Post driver A post driver is powered by a pair of hydraulic cylinders, one on either side of the hammer to provide a balanced lifting force to the hammer. A post retaining cap is formed to provide a recess for the post. The orientation of the driver may be controlled about a ho... | 12/26/2006 |
| 7137458 | Impact mechanism for a hammer drill An impact mechanism for a hammer drill, which has a housing and a drill bit protruding outside the housing, is provided. The mechanism includes firstly an impact platform within the housing; the impact platform is in connection with the drill bit for receiving impac... | 11/21/2006 |
| 7134512 | Method of downhole drilling and apparatus therefor A downhole drilling apparatus suspended by tubing includes a drill bit driven by an electric motor powered by a cable means. The motor is mounted upon a hollow shaft which allows fluid to pass through, so that a fluid circuit along the tube and back along the annulu... | 11/14/2006 |
| 7121359 | Drilling hammer having an external mechanism for selectively switching operation between impact drilling and chiseling modes The present invention relates to a drilling hammer comprising a hammer tube (13) that is rotationally drivable inside a housing (10), a striking tool (14) located in the hammer tube (13) and provided with a piston (15) that can dri... | 10/17/2006 |
| 7121357 | Method of inserting a grounding rod A method of inserting a grounding rod includes providing an elongated grounding rod that has an upper end and a lower end and also providing a hammer drill. An elongated tubular member has an open first end and an open second end. The tubular member includes a first... | 10/17/2006 |
| 7117955 | Driver cap The driver cap assembly of this invention includes a tubular body and a driver sleeve that may be positioned over and/or about an end of a shafted body. A force is applied to the driver cap such that the other end of the shafted body is driven into a surface. The dr... | 10/10/2006 |
| 7111690 | Manual slide post driver and extractor for “T”-type metal or fiberglass or plastic posts A post driving device is disclosed. The post driving device slides to a desired position and is essentially locked in place through frictional force. As the post is driven into the ground, the device can be adjusted to a new position along the length of the post. | 09/26/2006 |
| 7096980 | Rotary impact well drilling system and method A system and method for applying rotary percussive impacts to a drill bit, according to which an anvil is connected to the bit and a hammer is driven in one direction in the anvil when the bit encounters a relatively large load. Energy is stored during the movement ... | 08/29/2006 |
| 7093669 | Impact tool An impact tool, comprising: a shaft; a stop on the shaft; a slider movable on the shaft for striking the stop to create an impact force; and a handle on the slider to allow a user to move the slider. The handle isolates the impact force from the user by being movabl... | 08/22/2006 |
| 7093670 | Impact drill An impact drill minimizing transmission of vibration to a handle gripped by a user's hand. A spindle extends through a main frame and is movable in its axial direction and rotatable about its axis. A first ratchet is rotatable and axially movable together with the s... | 08/22/2006 |
| 7089694 | Sign post assembly and method for the same A method and apparatus providing a sign post assembly including a stabilizing post member, an outer tubular post and a horizontal post member. The stabilizing post member includes a spike portion and an inner post portion with a blocking portion coupled to the post ... | 08/15/2006 |
| 7086808 | Method and apparatus for on-grade boring A method for installation of an underground pipe includes an initial step of boring a pilot hole through the ground at a predetermined grade angle by extending a drill string having a steerable boring bit mounted thereon through the ground. Upon reaching an end loca... | 08/08/2006 |
| 7080958 | Vibratory pile driver/extractor with two-stage vibration/tension load suppressor A method and apparatus for driving and extracting piles that includes a vibration/tension load absorber assembly mounted between a housing and the vibratory unit which includes shear-type vibration absorbers connected between the housing and the vibratory unit and o... | 07/25/2006 |
| 7066279 | Pneumatic ground piercing tool A ground piecing tool includes a housing and an air distributing mechanism that reciprocates a striker to impact a chisel shaft in response to a supply of compressed fluid including a fluid inlet tube mounted in the bore of the striker having a radial port, a rear e... | 06/27/2006 |
| 7055621 | Method and apparatus for replacement of underground pipe An impactor for use with a directional boring machine for replacement of underground pipes includes a bursting head having a rearwardly opening recess and a front end opening that communicates with the recess. An inlet pipe is connected at its front end to a distal ... | 06/06/2006 |
