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The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 7273200 | Safety equipment for building sites The invention relates to a construction safety assembly. The inventive assembly comprises: safety posts with non-skid ends, which are provided with means for the rapid connection of a barrier; and, optionally, an upper jack-type safety element having a lower horizon... | 09/25/2007 |
| 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 |
| 7032785 | Caulking gun having angle adjustment function A caulking gun includes a gun body, a push rod, a push plate, an adjusting knob, and a piston lever. Thus, the adjusting knob is rotated to move away from the push plate to increase the incline angle of the push plate, so that the push plate is locked on the push ro... | 04/25/2006 |
| 7032786 | Caulking gun having angle adjustment function A caulking gun includes a gun body, a push rod, a push plate, an adjusting seat, a driving member, and an elastic member. Thus, the adjusting seat is movable in the gun body by rotation of the driving member to adjust the incline angle of the push plate by guidance ... | 04/25/2006 |
| 6763566 | Method and device for demounting/remounting hammers, hammer axles and/or protective caps of rotors of hammer crushers A method and apparatus involving releasing the rotor (1) and turning it to and fixing it at top dead center, attaching an extractor head to an exposed end of the hammer axle. A cross-piece (2.1) is applied and a releasable element of a slide (2.4 | 07/20/2004 |
| 6602019 | Device for fixing, tensioning or pulling an extensible traction element, in particular, a cable The device has two supports (15, 16) which can be moved in relation to each other in a transverse direction to the axis (2) of the traction element (1). Several clamping jaws (19, 20) are displaceably mounted in pairs opposite each other on said supports.... | 08/05/2003 |
| 6347817 | Locking device for use in a cargo support to lock a retractable tube A locking device installed in a cargo support to lock a retractable tube, including a holder frame fastened to the outer tube of the retractable tube, a rack moved in a longitudinal sliding way defined between two parallel lugs of the holder frame, a driv... | 02/19/2002 |
| 6164626 | Apparatus for holding a workpiece An apparatus for moving a movable assembly along a mast is provided. The movable assembly has a bore adapted to receive the mast passing through it. The movable assembly has a release and retain mechanism; a uni-directional drive mechanism; and a switchin... | 12/26/2000 |
| 5918860 | Uplift assembly An uplift assembly has a first uplifter, a second uplifter, a rod enclosed by the first uplifter and the second uplifter, a first positioning plate connected to the first uplifter, a second positioning plate connected to the second uplifter, a first clamp... | 07/06/1999 |
| 5915882 | Jack-up platform locking apparatus and method A locking mechanism is disclosed for use on the legs of a jack-up offshore platform. Each chord of the legs includes a rack for cooperation with pinions used in raising and lowering the legs. The locking mechanism of the invention includes a rigid frame a... | 06/29/1999 |
| 5782043 | Seismic correction system for retrofitting structural columns A system is provided for relieving the downwardly acting load on a structural column, such as a reinforced concrete column supporting a roadway, bridge, overpass, or other massive structure. Horizontally oriented keyways are formed into the concrete colum... | 07/21/1998 |
| 5622355 | Lifting and supporting apparatus A lifting and supporting apparatus having a vertically oriented robe interconnected to a smaller, vertically oriented rod by a lifting device. A large bracket or the like is secured to the robe so as to provide a surface upon which an object can rest. The... | 04/22/1997 |
| 5385335 | Method for lifting modular furniture An apparatus is provided for lifting modular furniture. The apparatus comprises a central shaft and housing slidably mounted on the shaft. Either the housing or the shaft is supported by a base support and the other of the housing and shaft is moveable. T... | 01/31/1995 |
| 5337428 | Adjustable bed with mechanical jack An adjustable bed includes a base frame, a mattress frame and linkage for mounting the mattress frame for relative movement with respect to the base frame. A mechanical jack is operatively connected to the base frame and the linkage for moving the mattres... | 08/16/1994 |
| 5261643 | Apparatus for lifting modular furniture An apparatus is provided for lifting modular furniture. The apparatus comprises a central shaft and housing slidably mounted on the shaft. Either the housing or the shaft is supported by a base support and the other of the housing and shaft is moveable. T... | 11/16/1993 |
| 5259478 | Pump jack with release mechanism An improved pump jack of the type comprising a metal frame that has two parallel spaced frame members carrying upper and lower shackle assemblies arranged to grip a supporting pole, and a pump arm coupled to the frame and the upper shackle assembly for ra... | 11/09/1993 |
| 4961562 | Apparatus for engaging beams An improved apparatus and method for engaging beams is disclosed. A frame is positioned so that each end of the frame is adjacent to opposing surfaces of the beam. A shoe is located between one surface of the beam and the upper end of the frame, and a ser... | 10/09/1990 |
| 4955584 | Pump jack A pump jack for traveling up and down a pole includes a frame member which supports a lower shackle having a front and a rear gripping rods applying a clamping force for gripping the pole. A pump arm pivotally supports and operates an upper shackle also h... | 09/11/1990 |
| 4942941 | Anti-spin handle for pump jack A pump jack for traveling up and down a pole includes a frame member and upper and lower shackles supported on the frame member. A pump arm is coupled to the pump jack and is operated for alternatively gripping the pole by the upper and lower shackles. Th... | 07/24/1990 |
| 4708567 | Motive power device for a delivery device for a silo or a similar upright container Motive power device for a delivery device located at the base of an upright silo in the shape of a worm screw rotatable about its longitudinal axis, which is swivelable around a central bearing across a circular annularly shaped bottom surface of the silo... | 11/24/1987 |
| 4657438 | Advancing mechanism and system utilizing same for raising and lowering a work platform A work platform (10) is guided for up and down movement along support columns (12). Advance/retract cylinders (50, 52) are interconnected between a portion (26) of the platform (10) and a first support (28). Advance/retract cylinders (64, 66) are intercon... | 04/14/1987 |
| 4615508 | Apparatus for skidding a load on a support Apparatus for skidding a drilling rig of the type having a roller mechanism which includes at least one roller for non-rotatingly supporting at least some of the rig on a platform and at least one roller for rotatingly supporting at least some of the rig ... | 10/07/1986 |
| 4586695 | Continuous tube extractor An apparatus for removing tubes from a tube sheet, wherein the tube to be removed is engaged from the side of the tube with the force for withdrawing the tube being applied against the outer peripheral surface of the tube by a tube-pulling device which, w... | 05/06/1986 |
| 4572481 | Releasable clamping assembly for use with hydraulic jacking apparatus A hydraulic apparatus is shown for moving a heavy load along an I-beam shaped structural member comprising a releasable clamping assembly and a double acting hydraulic jacking cylinder. The releasable clamping assembly includes a ramp plate, a pair of ram... | 02/25/1986 |
| 4552337 | Carpenter jack A friction type carpenter jack has a carrier capable of movement upwardly when the inner surface of a jacking friction bar is capable of frictionally gripping the shaft. A downwardly jacking means also allows the carrier to move along the shaft toward a b... | 11/12/1985 |
| 4537136 | Pipeline vehicle The vehicle has front and rear sets of wheels (24) carried on sprung arms (20). Each wheel can be locked by a clutch (26). One set of wheels is locked while a ram (32) is operated, causing the other set of wheels to roll forward. The main body (10) of the... | 08/27/1985 |
| 4534425 | Cable reaming apparatus and method The technique for replacing an existing underground cable and a specific apparatus for doing so are disclosed herein. The apparatus includes a main body or cable follower which is interconnected with the cable to be replaced for slidable movement along th... | 08/13/1985 |
| 4522129 | Device for charging drillholes A two-piece, telescopic climber, which is insertable into a drillhole behind cylindrically shaped explosive charges, alternately advances one and then the other of its two telescopic pieces in the direction of the drill hole thereby to urge the charges fo... | 06/11/1985 |
| 4494376 | Fluid actuated jack mechanism A jacking mechanism for jacking a well casing or other well pipe vertically, and including a hydraulic control system in which a reversible variable displacement pump acts in one condition to deliver pressure fluid in parallel with another pump to the low... | 01/22/1985 |
| 4463828 | Pump jack A pump jack for traveling up and down a pole. The pump jack includes a frame member supporting a lower shackle member which includes front and rear clamping bars which can apply a coupling force for gripping the pole. A pump arm is pivotally coupled to th... | 08/07/1984 |
| 4460039 | Wellhead valve removal and installation tool A tool (10) for the installation and removal of back pressure valves or plugs in a wellhead under pressure conditions to permit repair and replacement of wellhead outlet valves. The tool (10) comprises an elongate cylindrical housing (31, 32, 33) in which... | 07/17/1984 |
| 4444536 | High speed well working apparatus Disclosed is a rig for working on wells, and including a pair of continuous chains for moving a pair of pipe holders along a mast. Each of the two pipe holders is fixed to a point in each chain. The chains are driven along parallel paths by twin motors wi... | 04/24/1984 |
| 4438902 | Pipe string lift system A system for supporting a long, heavy dredge pipe string from a moving surface vessel, with a minimum of stress being applied to the pipe. The system comprises a gimbaled platform, supported over a central well through a vessel by two horizontal axes perp... | 03/27/1984 |
| 4427180 | Linear hydraulic winch comprising a pair of self-clamping jaws clamping alternately the axial cable A linear hydraulic winch is provided comprising a frame to which are fixed symmetrically two hydraulic double-acting jacks, enclosing two self-clamping jaws for alternately clamping the axial cable to the end of which the load is fixed, aligned along the ... | 01/24/1984 |
| 4405115 | Gripping jack system A jack usable for leveling a marine platform jacket by lifting a tubular leg or pile guide relative to a pile extending upwardly therethrough includes a gripping unit having slips which engage and grip the pile and which in a predetermined elevated condit... | 09/20/1983 |
| 4393961 | Device for coupling parts of a self-raising platform structure A device for coupling together two bodies in any position with respect to each other, which bodies are mounted for a linear displacement with respect to each other, in particular in a self-raising platform structure for coupling together the platform and ... | 07/19/1983 |
| 4389140 | Locking device for a pile-shaped element Locking device for a pile-shaped element for a body having buoyancy and provided with a longitudinal rack adapted to coact with a pinion connected to the body. A rack piece connected with and displaceable relative to the body is adapted to coact with the ... | 06/21/1983 |
| 4385667 | Cable reaming apparatus The technique for replacing an existing underground cable and a specific apparatus for doing so are disclosed herein. The apparatus includes a main body or cable follower which is interconnected with the cable to be replaced for slidable movement along th... | 05/31/1983 |
| 4372707 | Pile installation and removal mechanisms in off-shore rigs and method of using same A temporary rig of the jack-up type for oil and gas exploration. The rig is towed to a selected site where the legs are lowered to the ocean floor and the deck is raised out of the water. Piles are then pushed into the ocean floor by a series of extension... | 02/08/1983 |
| 4367056 | Marine platform jacket jack A jacking mechanism for leveling a marine platform and a jacket supporting the platform by elevating a tubular leg or member of the platform relative to a pile extending through that member, with the jacking mechanism including a first gripping unit adapt... | 01/04/1983 |
