Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7331207 | Metal shaping apparatus A power hammer assembly providing forming capabilities while remaining economical with respect to performance, vibration, footprint size and acquisition costs. The power hammer assembly can provide for a single stroke speed and/or a single set stroke with respect to... | 02/19/2008 |
| 7290431 | Rivet squeezer A pneumatically operated rivet squeezer is described, having features that allow for the miniaturization of a squeezer to a size smaller than portable rivet squeezers presently available. A first feature of the invention is that a return spring is accommodated withi... | 11/06/2007 |
| 7219526 | Portable pneumatic compression riveter A portable pneumatic compression riveter consists of a valve, air cylinder and rivet head assembly consisting of an alligator style set of jaws or a c-yoke style jaw set that is used to upset solid rivets used primarily, but not limited to, the aerospace industry. D... | 05/22/2007 |
| 7107814 | Pneumatic precision pliers The invention relates to a device for pneumatically operating a tool which can be driven by means of pressure, such especially, pneumatic pliers. The device has a cylinder comprising one or more pneumatically operated, nonpositively fitted pistons arranged in a row,... | 09/19/2006 |
| 6634205 | Hydraulic control method for hydraulic press A tryout of a metal mold for a mechanical press suitable for mass production is carried out with a hydraulic press in accordance with the same motion curve as that of the mechanical press so as to reduce metal mold corrections at a job site as much as pos... | 10/21/2003 |
| 6564610 | Hydraulic tool having mechanical actuator with internal bypass valve A hydraulic compression tool having a frame, a hydraulic fluid reservoir on the frame, a ram movably connected to the frame, a conduit system in the frame between the reservoir and the ram, a pump provided in the conduit system, a mechanical actuator prov... | 05/20/2003 |
| 6543115 | Process and device for joining by punching and riveting A method as well as an apparatus manufactures a punch riveted joint, wherein at least two layers are pressed by a holding-down device against the die and a rivet, in particular a semitubular rivet, is provided for joining the layers. The holding-down devi... | 04/08/2003 |
| 6266875 | Method for connecting a wire to a press-connecting terminal A press-connecting punch (3) for press-fitting the sheathed wire (40) into a slot between each pair of opposed press-connecting blades (33) of the press-connecting terminal (30), supported on a bed (1), is moved downward to act on the sheathed wire (40) p... | 07/31/2001 |
| 6260262 | Wire press-connecting apparatus A press-connecting punch (3) for press-fitting the sheathed wire (40) into a slot between each pair of opposed press-connecting blades (33) of the press-connecting terminal (30), supported on a bed (1), is moved downward to act on the sheathed wire (40) p... | 07/17/2001 |
| 6240758 | Hydraulic machine A hydraulic machine for operation such as for pressurizing a workpiece and molding products from materials by using a reciprocation mechanism comprising a hydraulic cylinder unit. The cylinder unit comprises two types cylinder chambers having different cr... | 06/05/2001 |
| 5852868 | Machine including a plurality of crimping stations for preparing electrical harnesses The present invention relates to a machine for preparing or making electrical harnesses. The machine includes a plurality of crimping stations situated along a horizontal linear conveyor (5) that moves clamps (6) holding lengths of wire (28). Each crimpin... | 12/29/1998 |
| 5823104 | Press for cold working of metal workpieces The invention is a press for cold working of metal workpieces. The invention includes a double-acting linear hydraulic power drive cylinder, a continuous press frame for accepting reactive forces that develop during the operation of the press, and a contr... | 10/20/1998 |
| 5613396 | Index-feed machining system An index-feed machining system having such a construction that a plurality of machining units on which a cassette incorporating a plurality of machining means is detachably mounted are disposed at intervals of mp (m being a given positive integer, p being... | 03/25/1997 |
| 5526668 | Index-feed machining system An index-feed machining system having such a construction that a plurality of machining units on the bodies of which cassettes incorporating a plurality of machining tools are detachably mounted are disposed at intervals at mP (m being a given positive in... | 06/18/1996 |
| 5473926 | Index-feed machining system An index-feed machining system having such a construction that a plurality of machining units on which a cassette incorporating a plurality of machining tools detachably mounted are disposed at intervals of mp (m being a given positive integer, p being a ... | 12/12/1995 |
| 5284044 | Wire joining device A hydraulic wire joining device for connecting at least two wires. The device includes a hydraulic cylinder for clamping a wedge or spacer over at least two wires, and a work fixture for transmitting an cylinder force to the wedge. The cylinder is a two-s... | 02/08/1994 |
| 5069058 | Swaging tool A swaging tool is provided for swaging a fitting and joining two tubes together, especially fittings in difficult-to-access areas. A removable head of the tool holds a first die stationary with respect to a second die moved toward the first die by a doubl... | 12/03/1991 |
| 4831861 | Hydraulic cold extrusion press A cold-extrusion press wherein a platen (4) carries a die part (31) and is capable of being moved towards and away from a stationary table (2) by piston/cylinder devices (5, 6), working piston/cylinder device (7) acts upon extrusion mandrel (11) to exert ... | 05/23/1989 |
| 4823588 | Hand tools including a hydraulic jack for the control of working members The present invention is a hydraulic hand-tool which includes an elongate piston having at least two sections of different transverse cross-sectional areas, a housing including a hollow front end portion having an interior surface defining a plurality of ... | 04/25/1989 |
| 4662207 | Hydraulically operated metal working tool This specification discloses a compact press tool which is capable of accommodating eccentric loadings without jamming or causing hydraulic fluid leakage. Specifically the press tool (1) comprises: a stationary element (2), a movable element (3) and an hy... | 05/05/1987 |
| 4658629 | Hydraulic, pneumatic, pneumatic-hydraulic or combined pneumatic-explosion press Press for manufacturing molded or pressed products, comprising a press tool fixed at one end of a moving cylinder. Said moving cylinder is coaxially mounted inside a fixed guiding cylinder fixed and coaxially suspended inside a cylinder forming the outer ... | 04/21/1987 |
| 4630460 | Fastener-setting tool A pneumatic-hydraulic tool for setting two-part fasteners, for example pull-type blind riveting assemblies, has a power unit comprising a thrust member and pulling means actuated by pistons slidable, one behind the other, in a common cylinder. The pistons... | 12/23/1986 |
| 4611483 | Press and method of making same A metal working press having a base, a die set located over the base, and coaxial primary and secondary rams movable towards and away from the base to drive the die set through a working stroke and return it to an open condition. The die set includes uppe... | 09/16/1986 |
| 4442694 | Floor-mounted forging press having a stationary piston with a bore for supplying a pressure medium, and a moving cylinder A floor-mounted forging press has a static piston arranged on the top beam and a cylinder which slides on the piston and forms a toolholder, and a bore extending through the piston for supplying pressure medium to the cylinder. The piston is hollow and is... | 04/17/1984 |
| 4341106 | Apparatus for controlling the movement of a reciprocatory hydraulically driven element of a metal forming machine A method and apparatus are provided for controlling the movement of a reciprocatory hydraulically driven element of a metal forming machine between extended and retracted positions. Two piston members, having different sized working areas are slidably mou... | 07/27/1982 |
| 4235088 | Servohydraulic press with a closed loop control circuit and method of operating a fluid pressure operated press A fluid pressure operated press has a drive piston which is movable in a cylinder and has a drive surface side and an opposite return surface side which is connected with a ram which operates on a workpiece. An accumulator is connected to the respective c... | 11/25/1980 |
| 4212186 | Pipe expander A tube expander of the type having a series of die members suitable for engaging the inside of a tube to expand it and which are guided for radial movement by a thrust plate, and which are caused to move radially by a mandrel movable axially within the th... | 07/15/1980 |
| 4079617 | Pneumatic press A pneumatic metal forming press which employs at least one pneumatic drive unit which has an expansion chamber defined by a flexible diaphragm acting on a support mechanism and a shock absorber underlying the support mechanism to absorb the impact thereof... | 03/21/1978 |
