Famous Patents
The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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 |
| 7316177 | Hydraulic hand pump with locking device A method and apparatus is provided that includes a hand pump having a handle locking mechanism, a counter bored nut, pivoting links, and unloading valve assembly. The unloading valve assembly allows a pump operator to pump a larger volume of hydraulic fluid and/or t... | 01/08/2008 |
| 7299739 | Hydraulic cylinder A fluid pressure cylinder has a piston rod 18 fixed to a piston 26 and projecting outside a cylinder body 23. A lock surface 43 inclining to a radial direction of the piston rod 18 is formed in an engagement member 31 provid... | 11/27/2007 |
| 7290478 | Stop for a slide assembly A rodless slide assembly is provided illustratively having a longitudinally-extending cylinder, a carriage, a stop assembly, and a catch assembly. The longitudinally-extending cylinder comprises first and second ends and a path of travel extending therebetween. The ... | 11/06/2007 |
| 7290479 | Stop for a slide assembly A rodless slide assembly is provided illustratively having a longitudinally-extending cylinder, a carriage, a stop assembly, and a catch assembly. The longitudinally-extending cylinder includes first and second ends and a path of travel extending therebetween. The c... | 11/06/2007 |
| 7287457 | Structure for retaining a piston assembly in position relative to a cylinder A fluid actuator and retainer assembly, such as a master cylinder assembly for a vehicular braking system, includes a housing having a groove, a cylinder provided within the housing, and a piston assembly. The piston assembly includes a piston disposed within the cy... | 10/30/2007 |
| 7287376 | Hydraulic cylinder, in particular slave cylinder for a hydraulic clutch actuation system for motor vehicles A hydraulic cylinder comprises a piston assembly with a piston and a piston rod, a cylinder housing with a housing bottom, a pressure chamber in the cylinder housing delimited by the piston and housing bottom, a spring element which prestresses the piston assembly a... | 10/30/2007 |
| 7285423 | Penetrable pressure proof sealing for a container A seal mechanism, apparatus and method are suggested for confining a chemical reaction in a reaction vessel that is accessible through a self-sealing diaphragm. A movable plunger is reversibly operable between a retracted position where the diaphragm is accessible f... | 10/23/2007 |
| 7281464 | Inlet monitor and latch for a crust breaking system A system for selectively controlling movement of a piston between first and second positions, the system comprising a controller selectively actuated to enable fluid communication between a device and a source of pressurized fluid, a control valve for enabling fluid... | 10/16/2007 |
| 7240605 | Actuator with a variable run The invention concerns a pneumatic and/or hydraulic actuator. The pneumatic and/or hydraulic actuator is one in which the run of a driving shaft, which is pneumatically operated by a piston, can vary on the basis of the insertion in the body of the actuator or at le... | 07/10/2007 |
| 7237471 | Continuously lockable adjustment device A continuously lockable adjustment device for immobilizing elements which are movable relative to each other includes a stepped cylinder having a first cylinder step and a second cylinder step, the second cylinder step having a larger cross-sectional area than the f... | 07/03/2007 |
| 7234386 | Three chamber hydraulic cylinder for an active vehicle suspension with integrated load leveling A hydraulic actuator for an active of semi-active vehicle suspension system has a cylinder with a piston therein. A piston rod is attached to the piston and extends out of the cylinder. First and second chambers are formed on opposites sides of the piston enabling t... | 06/26/2007 |
| 7195224 | Blowout preventer and locking mechanism A blowout preventer having a main body, a ram system with ram apparatus, a movement system with movable shaft apparatus connected to the ram apparatus, the ram apparatus movable from a first open-ram position to a second closed-ram position, the movable shaft appara... | 03/27/2007 |
| 7063521 | Collapsible handgrip for inflator An inflator includes a hollow handgrip and an air cylinder having a shaft. One end of the shaft is connected with a piston in the cylinder and the other end of the shaft is provided with a stud extending out of the cylinder. A bottom wall and an opening are arranged... | 06/20/2006 |
| 7013792 | Actuator provided with locking mechanism A piston rod is formed in a diameter smaller than an inner diameter of a hollow cylinder. The piston rod is inserted in the cylinder so as to be relatively movable in an axial direction of the cylinder. A locking mechanism comprises a first surface provided on the i... | 03/21/2006 |
| 6969042 | Blowout preventer and ram actuator A blowout preventer with a main body; a base releasably connected to the main body, the base having a base space therein, the base having a ram shaft opening; a primary piston movably disposed within the base space; a ram shaft to which the primary piston is connect... | 11/29/2005 |
| 6955531 | Pump for inflating and deflating an inflatable object with a rotatable nozzle assembly A pump is capable of inflating and deflating an inflatable object. The pump includes a cylinder, a piston and a nozzle. The cylinder defines an outlet through which air can only flow into the cylinder and an inlet through which air can only flow from the cylinder. T... | 10/18/2005 |
| 6663361 | Subsea chemical injection pump A chemical injection pump for injecting chemicals into subsea system at depths up to 10,000 feet is described which uses a minimum of moving parts by employing an actuator, for instance a solenoid, to power a double acting actuator rod and plungers thereo... | 12/16/2003 |
| 6602061 | Easy-to-hold hand pump A hand pump includes a head, a cylinder, a piston rod, a first handle, and a second handle. The head includes a valve-engaging portion for engaging with a valve of an article to be inflated. A first end of the cylinder is connected to the head. A piston i... | 08/05/2003 |
| 6519941 | Water-activated locking mechanism A water-activated locking mechanism has a housing with a chamber formed therein. Compressed water-absorbent fiber pellets are housed in the chamber. Ports in the housing allow water to enter the chamber when the housing is immersed in water. Mounted in th... | 02/18/2003 |
| 6508161 | Simplified piston pump A simplified piston pump which is featured in that the number of components for the assembling thereof can be minimized, that the assembling thereof can be simplified, and low in manufacturing cost thereof. This simplified piston pump comprises; a cylinde... | 01/21/2003 |
| 6325601 | Manual air pump having selectable high pressure and high volume modes A manual air pump includes an outer cylinder comprising a chamber therein, a head provided to an end of the outer cylinder, the head including an outlet passage communicated with the chamber for supplying air to an object to be inflated, and an inner cyli... | 12/04/2001 |
| 6250205 | Positioning arrangement for retaining a handle of a floor pump A floor pump includes a cylinder and a piston rod having a lower end reciprocatingly received in the cylinder and an upper end beyond the cylinder. A handle is attached to the upper end of the piston rod for manual inflation operation. The handle includes... | 06/26/2001 |
| 6089674 | Lockable wheel spindle assembly A spindle assembly for reliably locking a vehicle wheel to a vehicle. The spindle assembly includes a slotted sleeve that is engageable with a central opening of the wheel, to cooperate with a plurality of lugs in locking the wheel in place. The slotted s... | 07/18/2000 |
| 6004092 | Swinging arm loading refuse collection vehicle arm restraint A side loading refuse collection vehicle has a lift arm extendible and rotatable relative to the vehicle, the lift arm carrying grabber apparatus at an end for grasping a refuse container which may be lifted and dumped into the top of the body of the vehi... | 12/21/1999 |
| 5957031 | Hydraulic cylinder In order to facilitate a simple and cost-effective manufacture of a hydraulic cylinder, the cylinder tube (3) is provided as smooth stock with connectors (9) set up, preferably stud-welded, for the hydraulic attachments (1,2). Assembly parts provided in t... | 09/28/1999 |
| 5937730 | Pneumatically operable drive unit with a temperature dependent irreversibly releasable lock joint A drive unit is designed as a diaphragm drive with return springs for shifting an associated actuator, connected by a diaphragm plate and a driving diaphragm, into a safety position. The drive unit also includes actuating springs that are held in a compre... | 08/17/1999 |
| 5823300 | Brake device of linear moving body In a brake device of a linear moving body, a brake member is provided with a hole and a rod is fitted to the hole in clearance fit, and the brake member is moved slantwise and rotational moment is produced in the brake member thereby brake is applied to t... | 10/20/1998 |
| 5816767 | Transport locking system for movable-deck vehicle A transport locking system for a movable-deck trailer includes a telescoping sleeve which is positioned in parallel with a main deck piston and cylinder unit beneath the trailer deck. The main cylinder and the telescoping sleeve are placed in a neutral po... | 10/06/1998 |
| 5632192 | Spring brake actuator with indicator for fully released condition A unique indicator system is incorporated into a release tool for a spring brake actuator. The indicator provides an indication of when the release tool has is fully released. The release tool is preferably of the type wherein a threaded member does not e... | 05/27/1997 |
| 5623525 | Tool for lifting tie rod during shroud repair A tool for lifting a tie rod off of the refueling floor and lowering the tie rod into the downcomer annulus of a boiling water reactor during a shroud repair operation. The tie rod lifting tool can be attached to the end of a strongback suspended from a h... | 04/22/1997 |
| 5504297 | Apparatus for electrical resistance spot welding An improved welding apparatus and method of use including a pair of opposed electrodes mounted on arms which are fixed against outward displacement during the application of the welding current. One of the arms includes a pneumatic cylinder for moving an ... | 04/02/1996 |
| 5447028 | Axle driving apparatus An axle driving apparatus which is so constructed that an input pulley for engine power is set lower in mounting position with respect to the axis of a driving axle so as to enable the platform of a vehicle to be lowered. The engine position lowers to pro... | 09/05/1995 |
| 5400694 | Hydraulic cylinder with internal safety valve An internal safety valve for preventing the discharge chute from rapidly falling due a sudden loss of hydraulic fluid pressure. A safety valve assembly for use in a hydraulic cylinder consisting of a safety valve located in the barrel of a hydraulic cylin... | 03/28/1995 |
| 5341722 | Positioning apparatus used for machine tools etc. A positioning apparatus can perform high-accuracy positioning in a short time without a Curvic (trademark) or positioning coupling. With provision of a hydraulic motor having a rotary shaft fixed to a turret head and a hollow type rotary encoder for detec... | 08/30/1994 |
| 5179888 | Split clamp linear solenoid valve positioner A control force input system for a balance beam pneumatic valve positioner which does not allow the controlled apparatus to make a full travel motion when the overall control signal is removed. The control force is transmitted to the balance beam or other... | 01/19/1993 |
| 5179887 | Captive cylinder linear solenoid valve positioner A control force input system for a balance beam pneumatic valve positioner which does not allow the controlled apparatus to make a full travel motion when the overall control signal is removed. The control force is transmitted to the balance beam or other... | 01/19/1993 |
| 5094583 | Main tail locking device for a trailer A main tail lock for a hydraulic tail trailer comprising a pair of spaced-apart locks which are pivotally secured to the frame of the tail and which are pivoted between locked and unlocked positions by a lock cylinder. When the locks are in their unlocked... | 03/10/1992 |
| 5081910 | Locking linear actuator A power cylinder assembly including means to positively lock the piston rod of the assembly in the forward extended position of the cylinder assembly. The locking means includes a pair of cam plates that are moved radially outwardly into locking engagemen... | 01/21/1992 |
| 5079995 | Auxiliary remote-controlled release device for a positively acting mechanism The positively acting mechanism comprises a jack (2) with a rod (10) connected, at one of its ends, to a member whose actuation or retention it ensures, and, at its other end, to a thrust piece (16), on which a spring (18) comes to bear, in order to actua... | 01/14/1992 |
| 5056418 | Self-adjusting automatic locking piston for RAM blowout preventers An improved self-locking piston for use in ram blowout preventers has a hollow cylindrical outer piston which slidably contains an inner locking piston. The inner locking piston has a tapered, frusto-conically shaped front section with a plurality of circ... | 10/15/1991 |
