Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 6109303 | Process gas supply unit A process gas supply unit includes an upper module block provided with flow passages, a passage block provided with flow passages connected with the flow passages of the upper module block, and a base block provided with a connection passage connected wit... | 08/29/2000 |
| 6062605 | Weldless joint In a weldless joint 13, screwing a fastening member 13 into a joint body allows two pipes to move closer to each other in an axial direction without rotating. The two pipes can be thus connected without welded. Packings and disposed in the joint body prev... | 05/16/2000 |
| 6056291 | Metal gasket A metal gasket excellent in sealing performance and capable of sealing with a small pressing force. The metal gasket comprises at least one metal sheath with C-shaped cross-section and a ring elastic core surrounded by the metal sheath and the metal gaske... | 05/02/2000 |
| 6050287 | Purge system and purge joint A purge system has a purge gas piping system for substituting inert gas for process gas when a device connected in a process gas piping system is detached therefrom. In the purge system, a purge joint for connecting two pipes in the purge gas piping syste... | 04/18/2000 |
| 5984318 | Gasket holder To provide a gasket holder facilitating attachment and detachment of the gasket holder and capable of preventing positional shift and detachment of a gasket, a first gasket holding portion formed in a straight line and a second gasket holding portion form... | 11/16/1999 |
| 5915409 | Manifold A manifold comprising a supply port, an exhaust port and an output port in which two on-off valves or more different in the number of the output ports or output types are mounted on a manifold base, wherein the two on-off valves or more are mounted on the... | 06/29/1999 |
| 5913401 | Magnetic screw device, method of manufacturing magnetic screw device, and conveying device with magnetic screw A magnetic screw device comprising an internal (male) magnetic screw having the even number of magnetized bands spirally magnetized on an outer surface with contiguous magnetized bands having opposite polarities and an external (female) magnetic screw hav... | 06/22/1999 |
| 5850776 | Fluid pressure cylinders provided with impact absorbing mechanisms A fluid pressure cylinder includes a cylinder body, a piston accommodated in the cylinder body to define first and second pressure chambers therein, means for supplying fluid to each chamber to reciprocate the piston between a first stroke end and a secon... | 12/22/1998 |
| 5848188 | Shape measure device Disclosed herein is a high-resolution shape measuring device having a scanning device capable of scanning an object to be measured at a high constant rotational speed. The shape measuring device includes a laser light source for generating flashing laser ... | 12/08/1998 |
| 5819782 | Gas supply unit To provide a small-sized gas supply unit dispensing with connection parts or the like such as joints, pipes or the like among components or a gas supply unit facilitating maintenance of a manual valve or the like, the gas supply unit is provided with open... | 10/13/1998 |
| 5797604 | Metal gasket A metal gasket excellent in sealing performance and capable of sealing with a small pressing force. The metal gasket comprises at least one metal sheath with a C-shaped cross-section and a ring elastic core surrounded by the metal sheath. The metal gasket... | 08/25/1998 |
| 5751083 | Magnetic screw conveying apparatus A magnetic screw conveying apparatus comprises a rotary shaft 11 rotatably supported, a stepmother 19 for driving the rotary shaft 11 to rotate, a male magnetic screw 15 having magnetized bands with a south pole S and a north pole N alternately magnetized... | 05/12/1998 |
| 5717265 | Compact motor with speed reducing mechanism Disclosed herein is a compact motor with a speed reducing mechanism, including a cylindrical casing having an open end, a stator fixedly provided in the casing, an exciting coil provided in the casing, a rotor provided in the casing and having a high-spee... | 02/10/1998 |
| 5669422 | Slow start valve A slow start valve has a first valve member for opening and blocking a flow passage between an inlet port and an outlet port and a second valve member for opening and blocking a flow passage between the outlet port and an exhaust port, both being integral... | 09/23/1997 |
| 5634390 | Rotary actuator Disclosed is a rotary actuator utilizing magnetic screws which are stably rotatable at a great torque with little torque variation. The rotary actuator comprising (a) a closed hollow cylinder, a piston sliding within the cylinder, and a rotary shaft which... | 06/03/1997 |
| 5401065 | Fluid coupling A fluid coupling provides a cap nut having an internal screw formed inside, a pipe having a mirror-finished surface formed at an end face and a groove in an outer periphery, a device for preventing rotation of the pipe together with the cap nut, in contac... | 03/28/1995 |
