Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7744072 | Positioning device An exemplary positioning device used for moving a workpiece to a targeted position, the positioning device includes: a pulling member, a platform, a guiding member, two opposite positioning members, and a cable. The guiding member is located on the platform. The pos... | 06/29/2010 |
| 7066458 | Powered clamp assembly A powered clamp assembly is provided having an actuator, a cam member, a jaw arm, and a bearing member. The cam member has a camming surface and is driven by the actuator. The jaw arm is pivotable about an axis. The bearing member is attached to the jaw arm, as well... | 06/27/2006 |
| 7015066 | Method for stress reduction in flip chip bump during flip chip mounting and underfill process steps of making a microelectronic assembly A method of making a microelectronic assembly buying restraining a substrate in a fixture at room temperature, placing a flip chip on the substrate so that conductive bumps on the flip chip are aligned with contact pads on the substrate, heating the flip chip, the s... | 03/21/2006 |
| 6966104 | Reinforcing bar tool and method A tool for forming a high strength reinforcing bar coupling driving self-locking wedge sleeves over each end of a contractible jaw assembly bridging the abutting ends of the bar to be joined. The sleeves are seated in collars engaged by the distal ends of arms drive... | 11/22/2005 |
| 6948708 | Gripper provided with an adjustable sensor assembly A fluid actuated parts gripper assembly is provided. The fluid actuated parts gripper assembly has a pair of opposable pivoting jaw members, a fluid driven actuator, a linkage structure, a sensor target, a mounting and a sensor. The linkage structure is driven by th... | 09/27/2005 |
| 6902160 | Locating pin with integrated clamp The present invention is directed to a locating and clamping fixture for locating and clamping a workpiece, wherein the fixture comprises a generally hollow body and a floating clamping arm. A first cam follower is located within the body, and a drive pin comprising... | 06/07/2005 |
| 6830273 | Parallel gripper A parallel gripper includes a housing and two adjustable gripper base jaws which are displacably guided in a jaw guiding recess. The base jaws are moved relative to one another by a wedge hook gearing that is adjusted by a piston guided in the housing. The jaw guidi... | 12/14/2004 |
| 6783310 | Self-centering element A self-centering element for clamping workpieces via deflecting pins, which act between a drive element and self-centering slides. Deflecting pins, which are provided with grooves in which carrier prisms are arranged, are introduced in pairs into recesses in a housi... | 08/31/2004 |
| 6648316 | Device for centering and clamping a sheet metal assembly or a mechanical part The device includes a hollow pilot equipped with at least two retractable hooks and driven by a piston provided with a groove, the whole assembly being mounted on a supporting nosepiece. The piston is locked in clamping position by a three-point system ac... | 11/18/2003 |
| 6634630 | Clamping and lifting mechanism A clamp for clampingly engaging a portion of a workpiece and for lifting the workpiece from a work surface. The clamp comprises a fluid actuated piston and cylinder assembly, a frame assembly, first and second clamp arms supported by the frame assembly fo... | 10/21/2003 |
| 6609705 | Device for the floating clamping of a workpiece to be machined A device for the floating clamping of a workpiece to be machined. The device has a pair of clamping pistons and a pair of clamping jaws which are capable of being advanced onto mutually opposite sides of the workpiece with the aid of the two clamping pist... | 08/26/2003 |
| 6588816 | Modular stamped parts transfer gripper A modular gripper assembly having body with a yoke structure (44) defined at one end thereof and an actuator at an opposite end for reciprocally driving a piston assembly (58) within the yoke structure (44). A pair of opposable jaw members (49) having thr... | 07/08/2003 |
| 6471200 | System for guiding the jaws in grippers operated by a fluid A gripper includes a body, at least two jaws (11, 11'), which can move linearly on the body in opposite directions and at least one fluid-type piston (12, 12') that is arranged in the body and is intended to control the movements of the jaws. The jaws are... | 10/29/2002 |
| 6199848 | Fluid power gripper A fluid power gripper which contains a receiving space, in which two pistons are located able to be moved axially by fluid power in opposite drive directions, such pistons being kinematically coupled by a synchronization means. The synchronization means c... | 03/13/2001 |
| 6102383 | Combined centering and clamping device for use in the automotive industry The invention relates to a combined centering and clamping device that is actuatable by a pressure medium, and is especially useful in auto body building industry. Through this invention, large-area clamping of the work product around the circumference of... | 08/15/2000 |
| 6095507 | Pneumatic clamp A clamp having a pneumatic cylinder with an actuating rod connected to one end of a drive arm which has its other end attached to a crankshaft which in turn has crankpins eccentrically mounted thereon to drive inner and outer clamp arms between retracted ... | 08/01/2000 |
| 6058592 | Locator actuation method An apparatus for locating a workpiece on a processing surface includes a first locator arm assembly, a second locator arm assembly, and a pivotal member. The first locator arm assembly includes a first surface disposed for lateral movement and mating enga... | 05/09/2000 |
| 6056281 | Adjustable stoppers and mounting assemblies for parts grippers Adjustable stoppers for limiting the angle at which pivotal gripper jaws are opened. The stoppers include a stop block and at least one stopper pad which is made from a shock absorbing material such as urethane. The stoppers are secured to a pivotal one o... | 05/02/2000 |
| 6019357 | Uniforce hydraulic clamp A preferred clamping apparatus includes an hydraulic pull cylinder having a piston rod connected to the shaft of a wedge-shaped clamp operator received in a complementally shaped opening defined in a clamp block having a shiftable jaw. In operation, retra... | 02/01/2000 |
| 5954320 | Clamping device for a machine tool The clamping device has two jaws between which a workpiece to be machined is immobilized on the table of a machine tool. Each jaw is supported by a carriage, and the carriages are coupled so as to move in a mirror symmetric fashion with respect to a plane... | 09/21/1999 |
| 5948284 | Equalizing cam rocker fixture assembly for a resistance welding gun An apparatus for contacting and applying a force to opposite sides of a workpiece, such as a resistance welding device adapted for use on an automated assembly line. The apparatus is configured to be extremely rigid to ensure accurate movement and positio... | 09/07/1999 |
| 5873566 | Locator actuation apparatus An apparatus for locating a workpiece on a processing surface includes a first locator arm assembly, a second locator arm assembly, and a pivotal member. The first locator arm assembly includes a first surface disposed for lateral movement and mating enga... | 02/23/1999 |
| 5816567 | Fluid operated clamp including integral frame and slide member support A pneumatically actuated clamp and gripper including a fluid actuated piston and cylinder assembly and a clamp arm supported for pivotal movement and having a moving end for clampingly engaging a workpiece. The clamp includes a link having one end pivotal... | 10/06/1998 |
| 5687961 | Fluid operated clamp including integral frame and slide member support A pneumatically actuated clamp and gripper including a fluid actuated piston and cylinder assembly and a clamp arm supported for pivotal movement and having a moving end for clampingly engaging a workpiece. The clamp includes a link having one end pivotal... | 11/18/1997 |
| 5657973 | Device for gripping a workpiece A device for moving gripping jaws into engagement with a workpiece comprises a housing defining a chamber and first and second ends for closing opposite ends of the chamber. First and second pistons are located in the chamber and are movable toward and aw... | 08/19/1997 |
| 5637200 | Compact disk locking apparatus Apparatus for locking a workpiece, such as a compact disc, in a vacuum chamber includes a locking mechanism, movable between a locked position and an unlocked position, and a sealed bellows assembly that is coupled to the locking mechanism. The locking me... | 06/10/1997 |
| 5556235 | Rock bolter The present invention relates to a device for setting rock bolts. The device employs a common element for affixing the end of a feed shell with respect to a rock surface, stabilizing the feed shell and providing a common centralizer for centering all subs... | 09/17/1996 |
| 5555635 | Control and arrangement of a continuous process for an industrial dryer Flotation drying apparatus for the staged (indirect) heating of solvent laden air recirculating within a drying enclosure, and a method of optimally controlling and directing solvent laden recirculation air such that condensation and sapping of solvent an... | 09/17/1996 |
| 5505811 | Sidewall applicator for heat fusion of a fitting to a plastic pipe A sidewall applicator for heat fusion of a fitting to a plastic pipe has first and second spaced apart paralleled main shafts each having a lower end that is supported by rounding shells to the exterior of the plastic pipe so that the main shafts are supp... | 04/09/1996 |
| 5503378 | Clamping chuck The invention pertains to a clamping chuck consisting of a fork-like clamp jaw holder (1) to which an adjusting element (2) moving back and forth in the longitudinal extension of the clamp jaw holder (1) is provided for the relative movement of the clamp ... | 04/02/1996 |
| 5279342 | Woodworking machine An apparatus for precisely forming curved surfaces on a wooden workpiece in which the workpiece is automatically centered on a work table which is controllably movable inwardly and outwardly relative to a rotating cutter. The rotating cutter is slidably m... | 01/18/1994 |
| 5250141 | Hand-held apparatus for vulcanizing the bead zone of a pneumatic tire A hand-held apparatus for vulcanizing the damaged bead zone of a pneumatic tire. The apparatus includes tongs to engage the bead to be repaired and a hold-up element to engage the diametrically opposite point on the bead. At least one transport and manipu... | 10/05/1993 |
| 5201501 | Unit for grasping and clamping circular objects A unit is provided for grasping and clamping generally circular shaped parts such as lenses, comprising a central body on which three grasping and clamping elements are mounted adapted to bear tangentially on said part at three points or regions of tangen... | 04/13/1993 |
| 5181703 | Apparatus for installing wooden decking An apparatus for installing wooden deck planks on a supporting frame of joists has an actuator mounted on a base plate with an output shaft movable between an open position and a closed position. A control device is mounted on the frame for selectively co... | 01/26/1993 |
| 5152568 | Extendible gripper A fluid pressure actuated gripper including a fluid pressure actuated motor including a cylinder and a piston with the piston being fixedly mounted by a purality of support rods upon a fixed base. The support rods are slidably and sealingly received in th... | 10/06/1992 |
| 5146962 | Woodworking machine An apparatus for precisely forming curved surfaces on a wooden workpiece in which the workpiece is automatically centered on a work table which is controllably movable inwardly and outwardly relative to a rotating cutter. The rotating cutter is slidably m... | 09/15/1992 |
| 5127866 | Mechanically indexed mask stretching apparatus Method and apparatus are disclosed for tensioning uniform foil shadow masks by clamping the edges of a mask and moving the clamps through a preselected fixed displacement, thereby obviating the need for extensive controls on the tensioning process.... | 07/07/1992 |
| 5039074 | Machine tool fixture Machine tool fixture for clamping a workpiece characterized by jaw members nested in an overlapped relation with jaw closing cam surfaces in laterally spaced relation defining a slot in which is positioned a complemental cam section of a cam plunger movin... | 08/13/1991 |
| 4926731 | Band saw for cutting shaped pieces of bar stock The present invention relates to a band saw machine having the capability to produce finished piece parts by employing a rotatable collet and an index vise to rotate and longitudinally position the piece part, a band saw blade positioned in a blade twist ... | 05/22/1990 |
| 4926728 | Band saw for cutting shaped pieces of bar stock The present invention relates to a band saw machine having the capability to produce finished piece parts by employing a rotatable collet and an index vise to rotate and longitudinally position the piece part, a band saw blade positioned in a blade twist ... | 05/22/1990 |
