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Class 83/461 - Liquid pressure actuating means


Subclass of Class 83 - Cutting
Definition: Device wherein the clamp is driven by fluid pressure means,
No. of patents: 51
Last issue date: 08/21/2007


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NumberTitleIssue Date
7258515Tool holding fixture and insert tool
The invention is based on a tool holder for a power tool (i0), in particular for a hand-guided power angle grinder, having a slaving device (12) by way of which an inserted tool (14), which has a disklike hub (64), can be operatively conn...
08/21/2007
7066222Veneer slicer
In a slicer having a table for supporting a workpiece from which a slice is to be sliced, a knife is linked at opposite end portions of the knife to cranks for moving the knife in strokes having components generally transverse and parallel to the knife. The table wi...
06/27/2006
7059229Counterbalanced advancing metal cutting saw
An advancing power saw used for any metal cutting application. The power saw is provided with an oscillating mechanism that drives the saw up and down in a vertical direction. A hydraulic cylinder advances the saw toward the metal being cut while the saw is oscillat...
06/13/2006
7036578Tubing guide and coiled tubing injector
A coiled tubing injector assembly includes a coiled tubing injector and a tubing guide. The tubing guide has an automatic clamping mechanism that includes a pair of clamping slips. The clamping slip will automatically move from an open position in which coiled tubin...
05/02/2006
6979153Deep-grooving insert having stepped cutting edge
A deep-grooving chip-forming cutting insert includes a rear mounting portion, a front cutting portion, and a pair of side walls, each side wall extending along the front and rear portions. The front cutting portion includes a front end surface, a top surface, and a ...
12/27/2005
6227086Radial log clamp
A rotating log saw clamp having a clamp infeed section and a clamp outfeed section located adjacent a log saw blade. The clamp infeed section and clamp outfeed section are coupled for rotation together with the log during sawing of at least a portion of t...
05/08/2001
6178860Matcutter with clamping system and cutting head
A system for clamping sheet material against an underlying support surface employs linear arrays of clamp units, each unit including a separate clamping member having a head portion with a flat top surface and a peripheral element constructed to engage an...
01/30/2001
6062552Preassembly cutter clamp for use during tire production
A cutter clamp assembly for holding the elongated strip of tire material during the cutting process, whereby predetermined lengths of tire material are created to be formed into a tire. The cutter clamp is an air actuated clamp that is pivoted into engage...
05/16/2000
5996458Lead cutting apparatus of electronic component
A lead cutting apparatus of an electronic component, which is capable of cutting of leads of the component to a specific length independent of the shape and size of the component. This apparatus includes a table with a flat surface on which an electronic ...
12/07/1999
5941149Holddown bar for textile-centering and -cutting machine
A holddown bar assembly for a textile-centering and cutting machine through which a web is advanced in a direction has a lower bar underneath the goods and extending transversely of the direction a full width of the web and an upper support bar above the ...
08/24/1999
5765461Cut-off pieces feed and rest mechanisms for a steel cutting machine
Material feed and placement mechanisms for a steel cutting machine result in a power saving and accurate clamping device. A workpiece is moved into cutting position and clamped in place by the feed mechanism. After being cut by the cutting machine, the cu...
06/16/1998
5701791Workpiece processing machine with retractable clamping device
A workpiece being processed on a machine tool is moved by control devices to the tool head or work station of the machine mechanically or automatically. A stop defines an area around the work station from which the holding devices must be kept to prevent ...
12/30/1997
5638732Apparatus for cutting of elastomeric materials
An apparatus for cutting an elongated body of elastomeric material includes a tensioned wire which is oscillated in a generally up and down motion while traversing through the elastomeric material. The wire acts as a cutting blade and prepares the cut sur...
06/17/1997
5590700Vacuum flitch table with self-cleaning vacuum valve
A vacuum valve includes a valve body with a cylindrical sidewall having a vacuum inlet coupled to a vacuum source and a vacuum outlet. A piston is disposed within the valve body for movement between an open position and a closed position and provides a va...
01/07/1997
5542325Sheet cutting apparatus
A cutting device for cutting sheet material having an elongated work table disposed on a base support. The work table if for supporting the sheet material to be cut and includes a first and second portion, and a center portion, with the center portion rig...
08/06/1996
5528968Punch press with automated sheet rotation
An automated workpiece rotation is accomplished by clamping the workpiece, to the lower turret of a turret punch press in the press carriage grippers and rotating the turret 180° to reorient an oversized workpiece in order to enable completion of a punch...
06/25/1996
5509336Apparatus for supporting and restraining a log of paper during the cutting thereof by a log-saw
The apparatus for holding a log or long roll (L) of web material during the cutting thereof along a plane perpendicular to the log axis, includes: a plurality of clamping elements distributed in a circle around the log (L). The clamping elements can be mo...
04/23/1996
5497686Device for optimizing the unproductive motions of the holdfast beam in a machine that cuts material
An arrangement for optimizing the unproductive motions of a holdfast-beam in a machine that cuts sheets of material that are stacked on a bench. A hydraulic beam descends onto the stack of sheets to hold them fast before they are cut, and rises again afte...
03/12/1996
5497685Apparatus for optimizing cutting of stacked sheets of material in a cutting machine
An arrangement for cutting stacked sheets of material resting on a bench. A hydraulically actuated holdfast beam descends onto the material to be cut, and the cutter travels perpendicular to the surface of the bench adjacent to the holdfast beam. A sensor...
03/12/1996
5492041Pneumatic equipment for synchronous piercing of slits
A slitting equipment, piercing various patterns of ventilation slits in thin material, comprising a frame, a main cylinder, auxiliary cylinders, and a plate with knives. Upon an electric impulse from a bag-making machine, to which the present slitting equ...
02/20/1996
5488886Method of optimizing a machine that cuts material
A method for optimizing the cutting of sheets of material that are stacked on a bench in a cutting machine. Before cutting the sheets, a beam descends to hold the sheets fast while guillotine blade descends and cuts the sheets. After the sheets have been ...
02/06/1996
5377570Apparatus for perforating plastic film saddle bags
An apparatus and method for perforating a plastic film fleader section connecting together a plurality of plastic film bags and forming a pack of saddle bags. The saddle bags are carried on a block with the header on the block and the bags draped thereove...
01/03/1995
5309619Multi-function power shear machines
A power shear machine for processing metal in sheet or plate form. The machine comprises a table base, and a cross-beam both secured between two side members in order to form a part of the machine frame; a shear made of a bottom blade cooperating with a v...
05/10/1994
5267496Tire cutting apparatus
A hydraulically actuated tire cutter includes a first conveyor belt which loads a tire into a tire cutting position between a fixed plate, a moving plate and a plurality of adjustable bars. Twelve corresponding pairs of gripping jaws project from the fixe...
12/07/1993
5176060Truss miter angle saws
An apparatus for simultaneously miter angle cutting to length the end of a wood truss web includes an upright frame having a workpiece guide path, horizontally extending through the frame. A pair of superposed angled saw blades are moved vertically by a p...
01/05/1993
5125304Cutting system for cutting three sides of printed products, particularly folded printed products
To trim a plurality of printed products, which may have different thicknesses, first and second cutting assemblies are provided, each cutting assembly having a cutting knife (98, 59) and a cutting counter element (115, 65). The printed products are held i...
06/30/1992
4919028Shearing machine
The present invention relates to a shearing machine in which the upper shearing blade can be easily adjusted and positioned. The upper blade is held on a pivotal plate member which is pivotally held on a ram by means of a hinge means to be rotated to adju...
04/24/1990
4829865Firewood processor
A wood processor is disclosed for cutting a log into a series of shorter lengths and subsequently splitting the shorter lengths into individual pieces of firewood or the like. The processor includes a carriage for receiving the log. Clamps engage the log ...
05/16/1989
4793230Pressure beam for sawing machines
The pressure beam is adapted to be used in sawing machines for cutting workpieces such as panels or packs of panels (P), of the type comprising a workpiece support table (L) having a straight longitudinal slot defining a cutting line and a sawing tool (Z)...
12/27/1988
4785698Separating device for plates
A continuous strip which is laminated onto plates arranged at a distance from one another and which is composed of a dry resist laminate is introduced into a separating device 1 extending over the width of a strip 20. A drive cylinder 2 is arranged by mea...
11/22/1988
4757731Method and apparatus for selecting the bias upon stacks of sheets in guillotine type cutting machines
A guillotine type cutting machine wherein the length of cuts to be made in stacks of sheets determines the force with which a hold-down device bears upon a stack in the course of the cutting operation to prevent stray movements of the sheets. The force va...
07/19/1988
4750255Machine for disassembling wood pallets
An improved machine for disassembling all or a portion of wood pallets formed of paralleled stringers with deck boards nailed to the top and bottom edges of the stringers, the machine having a horizontal support arm onto which a stringer of a wood pallet ...
06/14/1988
4638699Shear for profile and/or flat and/or solid-section steel stock
A shear for cutting profile and/or flat and/or solid-section steel has at least one vertical frame plate having a front face and a back face and formed with a throughgoing workpiece window, at least one fixed blade carried on the plate at the window, a wo...
01/27/1987
4619166Double-bladed power hacksaw
A hacksaw apparatus, for use in association with a work piece and a source of pressurized hydraulic fluid, wherein the hacksaw apparatus comprises a frame, adaptable to receive and support the work piece, hydraulic cylinders mounted to the frame, and conn...
10/28/1986
4528879Bundle cutter of decentralized compact construction
A cutter for cutting, in stages, irradiated bundles of nuclear fuel rods, pecially from pressurized-water or boiling-water reactors. The cutter includes a feed channel associated with transverse and longitudinal feed devices for the rod bundle. A cutter h...
07/16/1985
4516448Punch and ram assembly for punch press
A punch and ram assembly for a punch press which clamps a workpiece prior to punching with the same mechanism used to strip the workpiece from the punch as the punch is retracted. The elements of the clamping and stripping mechanism are carried and actuat...
05/14/1985
4445410Apparatus for shearing bars, billets, and other elongated stock
A method and apparatus for clamping a bar to be sheared, shearing the bar, and transmitting the shearing forces is disclosed. An infeed clamping assembly and moving shear blade assembly are retained within a housing formed from a plurality of retainer pla...
05/01/1984
4294150Sawing or cutting machine
A sawing machine for the straight or oblique cutting or sawing of profiled sections has two columns maintained parallel by two bridging members and along which slide followers adjustable by nut and screw, and a tool holder which can pass between the follo...
10/13/1981
4241630Vising and feeding apparatus for cutting machines
A cutting machine for subdividing material lengths comprises a roller table establishing a transport path along which the material is directed to a cutting zone. A cutting head assembly has a cutting blade for cutting material located at the cutting zone....
12/30/1980
4236430Swing-away hold-down construction for bar or billet shear
A hold-down construction for a shear used for shearing workpieces from an elongated metal member including an elongated beam having first and second ends and a central portion therebetween, a hold-down assembly mounted on the central portion, a pivotal co...
12/02/1980
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