Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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 |
| 5704425 | Measurement port coupler and probe interface A measurement port coupler (26) having an improved measurement port (70) to allow fluid from the exterior of the measurement port coupler to be sampled by a probe (124) located on the interior of the measurement port coupler. A valve (72) in the measureme... | 01/06/1998 |
| 5704426 | Zonal isolation method and apparatus A new zonal isolation method and apparatus perforates a plurality of zones of a formation, while isolating each perforated zone from every other zone, with one trip into wellbore, and without requiring the circulation of a kill fluid throughout the wellbo... | 01/06/1998 |
| 5704427 | Portable well service rig The present invention provides a device for removing well casing from plugged and abandoned oil wells. The invention includes a unitary platform structure sufficiently small that the structure may be transported by boat to offshore well platforms and be l... | 01/06/1998 |
| 5704428 | Disaster preventive apparatus A disaster preventive apparatus has a gas cylinder support to which the head of a gas cylinder filled with CO2 gas is fixed, and the support is screwed in a top cover. When a bottom cover is turned by one hand while the top cover being held by ... | 01/06/1998 |
| 5704429 | Control system of an excavator A control system of an excavator. The excavator includes a lower running body, an upper pivoting body, a working device having a plurality of links attached to the upper pivoting body, a pivoting device, and a running device, actuators for actuating the w... | 01/06/1998 |
| 5704430 | Ground driven row cleaning apparatus An improved row cleaning apparatus to selectively clean away residue from conservation tilled fields without cultivation of the soil. When mounted on tractor-drawn implements, including planters, the cleaning action of the present invention improves depth... | 01/06/1998 |
| 5704431 | Active face packer wheel The invention provides a packer wheel to be towed behind agricultural equipment such as an air seeder, the wheel being used to pack the soil in which seed or fertilizer has been placed. The packer wheel includes a hub and a body extending from the hub to ... | 01/06/1998 |
| 5704432 | Coupling and centering device for attachment to a journal used in connecting the lower steering arm of a three point hitch of a tractor A coupling and centering device is attached to a journal (38) of a carrying frame (37) of an agricultural implement. The coupling and centering device has a catching ball (7) and a catching profile (14). The catching profile (14) has a sleeve (15) and a c... | 01/06/1998 |
| 5704433 | Power tool and mechanism A power tool has an application mechanism (300) for connection to the output of an epicyclic gearbox provided with a torque control ring. The mechanism has a body (310) journalling a chuck spindle (302). Outside the body is a clutch control arrangement co... | 01/06/1998 |
| 5704434 | Hydraulic torque impulse mechanism A hydraulic torque impulse mechanism comprising a rotatively driven drive member (10) which has a concentric fluid chamber (12) as well as radially acting cams (25, 26, 28), an output shaft (16) which extends into the fluid chamber (12) and which has two ... | 01/06/1998 |
| 5704435 | Hand held power tool including inertia switch A hand held power tool includes a motor coupled to an output element and an inertia switch operative to disable the output element upon movement of the tool at a rate greater than a determined rate. The inertia switch disables the output element by open c... | 01/06/1998 |
| 5704436 | Method of regulating drilling conditions applied to a well bit A method of regulating drilling conditions applied to a given well bit comprises assaying the compressive strength of the formation in an interval to be drilled by said bit. Wear of critical bit structure of the same size and design as in said given bit a... | 01/06/1998 |
| 5704437 | Methods and apparatus for drilling holes laterally from a well A method and apparatus for enhancing production from a well by lowering a tubular conductor into the well to a position in which the conductor extends downwardly from near the surface of the earth to a zone beneath the surface, and advancing a drilling un... | 01/06/1998 |
| 5704438 | Rotary borer A rotary borer has a body (10) mountable on a drill steel and one or more cutting tips (30) at a front of the body (10). Each tip (30) is tapered and is frictionally received in a corresponding tapered slot (22) in the body (10). The slot (22) has a trail... | 01/06/1998 |
| 5704439 | Electric wheelchair and seat mount-dismount apparatus therefor An electric wheelchair includes a pair of car body support posts, each having an elbow support post, a front support post and a bottom support post. The car body support posts are formed in a U-shape with the open part directed backward, and with the elbo... | 01/06/1998 |
| 5704440 | Energy distribution method for hydrid electric vehicle A method for distributing energy in a vehicle having a hybrid electric drive system that includes an internal combustion engine and at least one electric motor which deliver torque to a primary drive shift having at least two drive wheels operatively asso... | 01/06/1998 |
| 5704441 | Driving controller of the electromotive bicycle The driving controller of a electromotive bicycle is installed on a electromotive bicycle comprising a driving motor and a battery, wherein, the large gear is installed with an arc-shaped slot, compressing spring, and two graphite brushes, and the portion... | 01/06/1998 |
| 5704442 | Frame structure for a motorcycle A frame structure for a motorcycle provided with a sub-frame extending forwardly from pivot plates fixed at the lower ends of a main frame. The sub-frame includes a U-shaped member having right and left opening ends thereof connected to the pivot plates a... | 01/06/1998 |
| 5704443 | Drive unit for motor vehicles Drive for a four-wheel drive vehicle, comprising a transversely mounted in-line engine (1) and an automatic gearbox (8) placed parallel to the engine on one side thereof. The automatic gearbox has two output front wheel drive shafts (19,20) directed in op... | 01/06/1998 |
| 5704444 | Adaptive vehicle drive system for extreme operating conditioning An adaptive torque control and distribution system for a motor vehicle having a transfer case, primary driveline and drive wheels and secondary driveline and drive wheels for operation in extreme off road conditions such as sand. The transfer case include... | 01/06/1998 |
| 5704445 | Method and apparatus for disabling a motor vehicle A method of disabling a motor vehicle, comprising the steps of, firstly, providing an apparatus for disabling a motor vehicle which includes a plinth-like base small enough to fit in the palm of a person's hand. The base has a first substantially planar s... | 01/06/1998 |
| 5704446 | Electric power steering control An electric power steering control apparatus comprising a vehicle steering wheel, a torque sensor for sensing torque in the vehicle steering column, a motor for providing motive force power assist to the steering system, a controller receiving the torque ... | 01/06/1998 |
| 5704447 | Snap-in, rope loop step pad An individual step pad which can be incorporated into any loop of rope or dock line. The step pad provides a permanent or temporary rescue and utility footing in combination with a piece of rope. The step pad comprises a step pad portion, the step pad por... | 01/06/1998 |
| 5704448 | Modular ladder system A modular ladder system for climbing trees is provided, comprising an upper assembly having a first pair of support members attached to one another by a top step; a lower assembly having a second pair of support members attached to one another by a bottom... | 01/06/1998 |
| 5704449 | Scaffolding planks A scaffolding plank for a framework scaffolding or a suspended scaffolding, which has its object to eliminate a clearance in all directions of the scaffolding plank and to detachably mount a stopper at the back of a hook on a lateral member with a one-tou... | 01/06/1998 |
| 5704450 | Portable and foldable workhorse A portable and foldable workhorse. A pair of parallel rails includes an open space between the rails, the rails providing a flat top support surface and a bottom support surface. A pair of leg assemblies each includes a top surface. A center beam is attac... | 01/06/1998 |
| 5704451 | Ladder stabilizing system A ladder stabilizing system including a pair of mounting assemblies coupled to a lower end of a ladder. Further provided are a pair of stabilizing mechanisms slidably engaged with respect to the mounting assemblies. A pair of feet are pivotally coupled to... | 01/06/1998 |
| 5704452 | Brake piston and pad with automatic coupling together A device for attaching a disk-brake pad (2) to a piston (1) in a brake. The piston (1) has an opened internal volume (100) bordered by a chamfer (101) and exhibiting an internal peripherial widening (102). The device includes a passive fastening component... | 01/06/1998 |
| 5704453 | Brake device having an elbow for guiding a brake cable A brake device for a bicycle includes a brake arm and a stud pivotally coupled to the brake arm. The stud includes a ring and a head formed in one end. A casing has an opening and a notch formed in each of the two ends. The ring is rotatably engaged in on... | 01/06/1998 |
| 5704454 | Fatigue and impact resistant railway brake shoe A bonded composition type railroad brake shoe is disclosed in which the keybridge cavity of the brake shoe backing plate is filled with composition brake lining material for reinforcement and dampening of the keybridge. An insert located in the keybridge ... | 01/06/1998 |
| 5704455 | Automatic brake booster An automatic brake booster having the functioning of an automatic brake, or more specifically, an improvement of bellows contained in a shell thereof is disclosed. The bellows comprises a stepped tubular member having portions of different diameters, name... | 01/06/1998 |
| 5704456 | Hydrodynamic torque converter In a hydrodynamic torque converter, a secondary circulation which is provided for the cooling of the hydraulic fluid in the primary circulation chamber, and when there is a lockup clutch also for the actuation of this lockup clutch, runs through a stator ... | 01/06/1998 |
| 5704457 | Parking system for a vehicle A driving force from a motor is transmitted through a pinion, a first gear, a second gear, a third gear, a link, a control lever, a control shaft, a parking shaft and a parking lever to a parking pole. A lost motion spring is mounted between the control s... | 01/06/1998 |
| 5704458 | Freewheel cage with reinforcing ring A freewheel cage (1) arranged between two concentric metal machine components (2,3) and comprising at least one reinforcing ring (14) and a plurality of segments (4) made of an injectable or castable material and arranged on a periphery of the reinforcing... | 01/06/1998 |
| 5704459 | Positive displacement coupling device Volumetric coupling (38) having multiple hydraulic pumps, controlled by a ring (40) which links the discharge side directly to the suction side for each pump when the coupling is uncoupled, and seals the discharge side when the coupling is coupled.... | 01/06/1998 |
| 5704460 | Friction clutch assembly for a motor vehicle with a clutch actuator A friction clutch with an actuator for automated operation, having an electronic control system preferably located separately from the actuator. Whereby to reduce the intensity of the control currents for the electric motor of the actuator, there can be a... | 01/06/1998 |
| 5704461 | Rotational control apparatus Rotational control apparatus (A) in the preferred forms of fan clutches is disclosed including shoulder bolts (78) extending through axially extending voids (146) formed in axially extending portion (66) and flange (76) of first and second shell housings ... | 01/06/1998 |
| 5704462 | Cylinder for hydraulically operated clutches and brakes and hydraulically operated clutch assemblies for motor vehicles A cylinder for hydraulic systems, in particular for motor vehicles, includes a housing with an axial boring, in which a piston fastened to a piston rod is displaced axially in a guided manner, and one end surface of which is pressurized with hydraulic flu... | 01/06/1998 |
| 5704463 | Coin returning mechanism, applicable to public modular telephones A coin return mechanism for public telephones has a coin box 1 with an access door 13 and a cam 15. The access door 13 and cam 15 are mounted on a shaft 14 that turns when door 13 is pushed, and return to the their resting position when the door is no lon... | 01/06/1998 |
| 5704464 | Passenger sensor for an escalator or moving walk A passenger sensor for a conveyor includes a transmitter assembly that is positioned within a channel in the conveyor balustrade. The transmitter assembly includes a plurality of transmitters that are spaced along a cable to form a transmitter chain. Each... | 01/06/1998 |
