Bizarre Patents
Ballistic resistant body covering
A ballistic resistant body covering for protecting the torso, groin and neck area from ballistic missiles.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7258515 | Tool 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 |
| 7258348 | Machining fixture for centering and holding workpiece A centering and holding fixture includes a base, a piston disposed within a piston chamber at least partially located within the base, and a radially flexible ring connected to the piston by force transmission apparatus operable to contract and expand the radially f... | 08/21/2007 |
| 7175579 | Machine tool with gripper and/or tool magazine system A tool magazine system and a gripper for a machining spindle. The gripper is fed to the tool laterally with respect to the rotational or longitudinal axes of the tool, particularly substantially at right angles to the axis, and should grasp the tool. ... | 02/13/2007 |
| 6969073 | Chuck assembly with a sealing member A chuck assembly includes a housing formed with an hydraulic fluid inlet, a sleeve mounted in the housing and formed with an annular groove, a shaft mounted rotatably in the sleeve and formed with a first fluid passage, a chuck unit mounted in the shaft, a piston su... | 11/29/2005 |
| 6938903 | Tool holder for a tool, especially a boring, milling or grinding tool, which can be rotated about a rotational axis The invention relates to a tool holder for receiving a tool, especially a boring, milling, or grinding tool, which can be rotated about a rotational axis and which comprises a clamping shank. In a preferred form of embodiment, said clamping shank comprises a receivi... | 09/06/2005 |
| 6913268 | Rotation-independent actuation of a machine element The invention relates to rotating machine element that contains a mechanism actuated by a fluid pressure. The aim of the invention is to allow for a supply of actuation fluid also during the rotation. To this end, a non-rotating control element (2) is mounted... | 07/05/2005 |
| 6814528 | Device for supporting a machine part when subjected to force The invention relates to a device for supporting a first machine part when a second machine part is subjected to force, the second machine part being mounted on the first machine part or being accommodated therein, in particular device for supporting a shaft (1 | 11/09/2004 |
| 6726415 | Actuating device for a tool or workpiece tensioning jack in a machine tool spindle The invention relates to an actuating device for a tool or a workpiece tensioning jack in a machine tool spindle. The actuating device includes a pressure piston which is arranged inside a housing for actuating the tool or workpiece tensioning jack. In order to prov... | 04/27/2004 |
| 6645131 | Hydrostatic tool system An hydrostatic tool system including a tool assembly having a hydrostatic tool holder for holding a rotating tool, for example a machine or cutting tool. The hydrostatic tool system may also include a tool storage system, a tool transport system and a too... | 11/11/2003 |
| 6601856 | Method and device for the dynamic lubrication of a power chuck Moving parts of the chuck are enclosed in a sealed cavity which is provided with a circulating lubrication. The power which drives its flow is derived from the force needed for opening and shutting the tongs of the chuck. In a chuck with hydraulically act... | 08/05/2003 |
| 6581509 | Rotary cylinder assembly for a machine tool A rotary cylinder assembly for a machine tool is provided that includes a lock check system that locks the work piece to the machine tool chuck and prevents extension and retraction of the work piece in the event of loss of hydraulic or pneumatic pressure... | 06/24/2003 |
| 6305697 | Clamping jaw device A rotary clamping device for use in clamping and holding a metal casting tree during cutting of the metal casting tree includes a cylinder having a piston rod for actuating a plurality of clamping jaws. In one embodiment, a conically shaped cam engages ex... | 10/23/2001 |
| 6270084 | Pneumatic chuck assembly A rotary chuck having a chuck body supporting a plurality of clamping jaws for movement between open and closed positions and defining a cylindrical piston chamber containing an axially movable double acting piston coupled to a jaw actuator. A plurality o... | 08/07/2001 |
| 6257122 | Clamping cylinder The invention relates to a clamping cylinder for operating, for instance, a chuck by means of a pull pipe or pull rod installed preferably in a turning machine. The clamping cylinder has a cylinder casing (4) comprising a screwed-on cover plate (5), an ax... | 07/10/2001 |
| 6186515 | Air-cooled hydraulic chuck actuator A chuck actuator has a cylinder housing rotatable about a main axis and forming a chamber, a piston axially subdividing the chamber into a pair of compartments and axially displaceable in the chamber, and a stem centered on the axis, extending from the ho... | 02/13/2001 |
| 5997011 | Retaining device, in particular for a workpiece A retaining device has clamping elements arranged on a housing that act as detachable locking elements and can be radially displaced when a pressure member located in the housing is axially displaced. First and second pressure media can act upon the press... | 12/07/1999 |
| 5941146 | Work spindle A work spindle for a machine tool. The work spindle has a spindle guard tube, a clamping arrangement, a clamping force generator, which is arranged on the spindle guard tube and operates the clamping arrangement, and which has at least one first cylinder ... | 08/24/1999 |
| 5901967 | Changeable chuck system In a changeable chuck system which can grip and release a workpiece by means of a chuck C by itself, fluid shut-off valves 20a and 20b are provided on a fluid supply portion provided on the tip of a main spindle 2 of a machine tool. When the chuck C is mo... | 05/11/1999 |
| 5873687 | Tool unit with hydraulic feed passage A tool unit according to the invention has an arrangement wherein a shaft-like mount portion having a step is disposed on one of a tool body or a tool holder. The other of the tool body or the tool holder, includes a recessed fitting portion or bore shrin... | 02/23/1999 |
| 5785325 | Shaft bearing on a machine tool A shaft bearing for mounting the shaft ends of a rotating workpiece to be machined, especially an intaglio printing cylinder, has a rotatably mounted clamping chuck clamping the shaft end and having a hollow clamping head. The clamping head has gripping p... | 07/28/1998 |
| 5549427 | Device for transferring a pressure medium The device for transferring a pressure medium has a stationary outer component with first pressure medium channels and an inner, rotatably drivable component inside the stationary outer component radially spaced at a distance from the stationary outer com... | 08/27/1996 |
| 5435577 | Hydraulic clamping device A hydraulic clamping device for axially clamping pieces of radial symmetry has a base body with a longitudinal axis slipped onto a receiving mandrel. An annular piston is floatingly arranged in the base body. A closed circuit hydraulic system for displaci... | 07/25/1995 |
| 5272897 | Part hold down apparatus for part processing machine An automatic machine for processing parts comprises at least two part hold down apparatuses, each for releasably holding one of the parts in a predetermined position during processing. The apparatuses are shiftable between an open position for accepting t... | 12/28/1993 |
| 5255928 | Adjustable fastening device The invention relates to an adjustable fastening device e.g. for an axially-shaped, tubular, flat or spherical tool or working piece or machine part or a like of a desired shape. The device includes: a body section (1), a clamping means (2), mounted withi... | 10/26/1993 |
| 5221098 | Collet closer A collet closer comprises a housing including a piston and a cylinder for collet opening and closing. A tubular member supported is in said housing and has an extension projecting from the housing. The tubular support member is secured to the piston and m... | 06/22/1993 |
| 5125776 | Hydraulic clamping device A hydraulic clamping device for the axial clamping of bodies of rotation, especially tools, onto a revolving mandrel is provided. It has a base body fixed to a mandrel and a rotary piston which is suspended in a floating manner inside the base body and is... | 06/30/1992 |
| 5044421 | Rotary pneumo-hydraulic clamp A rotary clamping device is used to clamp an investment casting within a cleaning center to permit cutting and cleaning of the investment from the casting. The clamping device includes a piston and cylinder unit which is advanced to shift a clamping assem... | 09/03/1991 |
| 4996908 | Through hole rotating cylinder A through hole rotating cylinder for controlling a workpiece gripping chuck associated with a rotary machine tool. The cylinder includes a cylinder body assembly, piston tube and fluid distributor section rotatable within a housing and defining a central ... | 03/05/1991 |
| 4946178 | Chuck and method of chucking A chuck and methods of chucking or clamping a workpiece for multiple machining operations without requiring rechucking or repositioning of the workpiece employs an arcuate cradle for supporting the workpiece with an abuttment at one of its ends. The workp... | 08/07/1990 |
| 4898397 | Segmented disk clamp A clamp for attaching a plate such as a memory disk onto a spindle comprising a segmented clamp that may be withdrawn within the projected boundary of the interior hole in the disk for convenient unloading and a two part piston clamping means that applies... | 02/06/1990 |
| 4890541 | Fluid-operated actuator with force multiplication A fluid-operated actuator for collets, vises, chucks and other workpiece engagement devices, for example, the actuator having a piston which moves the engagement device toward the workpiece with a force equal to product of the area of the face of the pist... | 01/02/1990 |
| 4870242 | Clamping mechanism for securing an EDM electrode holder in a hydraulic chuck An apparatus for displacing a pressure creating piston in a hydraulic chuck. A toggle clamp having a handle is attached to the hydraulic chuck above the pressure piston by a mounting assembly. An adjustable plunger extension mounted on a plunger is movabl... | 09/26/1989 |
| 4793053 | Quick disconnect device The present invention provides a quick disconnect coupling for a work tool to a machine. The invention in its preferred embodiment provides a coupling having fluid and electrical connections and also providing alignment independent of the locking mechanis... | 12/27/1988 |
| 4745831 | Setting tool for screwing-in threaded rods A setting tool for screwing a threaded rod into a receiving material includes a work driver formed by a sleeve-like member. A retainer part is secured within one end of the sleeve-like member for holding the threaded rod while it is inserted. The end of t... | 05/24/1988 |
| 4738187 | Self-lubricating hydraulic actuator for power chuck A chuck actuator has a cylinder extending along an axis and having an axially extending stem whose outer surface is formed with a pair of central radially outwardly open and axially spaced intake ports, a piston axially displaceable in the cylinder and fo... | 04/19/1988 |
| 4697966 | Pressurized clamp for securing tools or workpieces A pressurized or hydraulic clamp, with piston reset, for securing tools or workpieces, such as grinding wheels, milling tools, and the like, to a shaft. By pressurizing with a hydraulic fluid, a floating piston is pressed out of the clamping unit to hold ... | 10/06/1987 |
| 4644836 | Punch press with vertically reciprocating plunger A punch press has a vertically reciprocating plunger, and a die punch exchangeably secured at the plunger by means of a tool exchange device. The die punch has a die head, and the tool exchange device has an exchange insert with guide elements, and a reta... | 02/24/1987 |
| 4544311 | Mask alignment apparatus A mask aligner (10) includes a ring member (11) having an aperture (13) and a series of internal pneumatic cylinders (14-17) having rolling bearing surfaces (19) at the ends of piston rod shafts (18) wherein when a mask (20) is positioned in the aperture,... | 10/01/1985 |
| 4537410 | Arrangement for supplying a chuck with pressure fluid In a power operated chuck, a radially elastically deformable seal ring is inserted in a recess of a pressure fluid supply ring embracing the chuck body. The seal ring comprises a stiff body portion in which passages are provided for the pressure fluid, an... | 08/27/1985 |
| 4523766 | Chuck assembly A chuck mechanism includes an axially fixed part-positioning pilot coaxially surrounded by a fixed hollow closure sleeve. A cylindrical carrier slides within the sleeve and carries a plurality of part-engaging jaws. A dual area piston is pressure-operated... | 06/18/1985 |
