Famous Patents
British merchant Peter Durand invented the tin can in 1810.
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 |
| 7409901 | Variable stroke assembly A variable stroke assembly enables the piston stroke length of a positive displacement pump to be varied while maintaining a substantially constant unswept volume in the piston cylinder. Alternatively, a variable stroke assembly enables the piston stroke length of a... | 08/12/2008 |
| 7367258 | Longitudinally adjustable reversible axial piston machine The invention relates to a reversible axial piston machine (1) consisting of a cylinder drum (5) which rotates about a rotational axis (7) and in which pistons can be displaced in cylinders (6), said pistons being supported against an inc... | 05/06/2008 |
| 7337805 | Valve with adjustable stop An adjustable mechanism for a valve or actuator is provided. The adjustable mechanism cooperates with one or more pistons, which in turn cooperates with a valve element to limit the axial displacement of the valve element relative to the valve seat. The adjustable m... | 03/04/2008 |
| 7320198 | Integrated gas spring actuator strut assembly with threaded nut in gas spring An integrated gas strut actuator assembly particularly adapted for providing power actuation of a motor vehicle lift gate or other opening closure. The assembly integrates the function of a counterbalancing gas spring and that of a electrically powered actuator. The... | 01/22/2008 |
| 7223933 | Low impact spot welding cylinder with single piston A weld cylinder having a single piston arrangement is provided. The cylinder has a movable retract piston assembly with the piston arranged within the retract piston assembly. The piston supports a rod that is movable between home, intermediate, work, and advanced w... | 05/29/2007 |
| 7216580 | Multistage stroke cylinder apparatus A multistage stroke cylinder apparatus includes a main cylinder having a main piston and a main rod, an intermediate stop position setting mechanism for setting an intermediate stop position of the main piston, and a return position setting mechanism for setting a r... | 05/15/2007 |
| 7107857 | Apparatus for an anvil system that provides enhanced self-resistive specimen heating when used in a dynamic thermo-mechanical material testing system Apparatus for use in a conventional dynamic material testing system to advantageously provide uniform self-resistive specimen heating with enhanced temperature uniformity. Specifically, an anvil stack (300) in an anvil assembly (200) has a foil interfa... | 09/19/2006 |
| 7047867 | Oscillating device for adjusting the displacement of a fluid pump A device for adjusting the displacement of a fluid pump includes a swashplate supported for pivotal movement about a first axis, and an engine having first and second cylinders. A first piston is located in the first cylinder and secured to the swashplate at a first... | 05/23/2006 |
| 7011469 | Piston joint A joint for positioning between first and second elements includes an outer member and an inner member. The first and second elements are arranged for linear motion along a common axis. The outer member is configured for movement relative to the first and second ele... | 03/14/2006 |
| 6978712 | Variable displacement piston type pump A method of providing variable pumping rate from a piston type pump at a constant drive speed, comprising providing a connecting rod connected to the throw of a crankshaft on one end and to a connecting pin on the other end, constraining said connecting pin to move ... | 12/27/2005 |
| 6976831 | Transmissionless variable output pumping unit A transmissionless variable output pumping unit comprising a multiple crankshaft pump driven by a prime mover. The apparatus includes an adjustment mechanism for adjusting a phase angle between first and second crankshafts. Plungers in the pump are disposed in cylin... | 12/20/2005 |
| 6966249 | Rotary actuator A rotary actuator including a tube. A piston disposed in the tube and configured for displacement there along. The piston having a spline extending radially outwardly therefrom formed by plurality of grooves and a plurality of non-grooved portions. At least some of ... | 11/22/2005 |
| 6962103 | Multi-stroke cylinder A multi-stroke air cylinder providing a precisely directed and controlled stroke in the face of lateral, torsional and tilting loads on a tooling plate. The multi-stroke cylinder utilizes a plurality of mechanically linked pneumatic or hydraulic pistons having diffe... | 11/08/2005 |
| 6925973 | Piston engine assembly A variable compression piston assembly includes a plurality of pistons, a transition arm coupled to each of the pistons, and a rotating member mounted for pivoting movement to slide along an axis of the drive member. Movement of the rotating member relative to the d... | 08/09/2005 |
| 6915765 | Piston engine assembly A variable compression piston assembly includes a plurality of pistons, a transition arm coupled to each of the pistons, and a rotating member mounted for pivoting movement to slide along an axis of the drive member. Movement of the rotating member relative to the d... | 07/12/2005 |
| 6913447 | Metering pump with varying piston cylinders, and with independently adjustable piston strokes A metering pump includes an actuating mechanism, and a plurality of piston cylinders coupled to the actuating mechanism. A first of the cylinders has a working volume that differs from a second of the cylinders. The actuating member is centrally located and the cyli... | 07/05/2005 |
| 6742440 | Servo-controlled integral stop for use with a servo-controlled hydraulic piston Apparatus, and an accompanying method for use therein, that utilizes working and stopping servo-controlled hydraulic pistons wherein the stopping piston acts as a controlled mechanical stop for the working piston. Both pistons are spaced apart along and coaxially ar... | 06/01/2004 |
| 6651546 | Multi-stroke cylinder A multi-stroke air cylinder providing a precisely directed and controlled stroke in the face of lateral, torsional and tilting loads on a tooling plate. The multi-stroke cylinder utilizes a plurality of mechanically linked pneumatic or hydraulic pistons h... | 11/25/2003 |
| 6474214 | Three-position stop type swing actuator A three-position stop type swing actuator has a main piston freely moving in forward and backward directions in an axial direction within a casing, an output shaft placed at a coaxial position with the main piston in such a manner as to be fixed in an axi... | 11/05/2002 |
| 6408740 | Three position cylinder A three position cylinder assembly having an outer cylinder connected between two bases defining a cap end and a head end. A stationary tubular member is secured to the cap end of the outer cylinder at a port to provide fluid access into the outer cylinde... | 06/25/2002 |
| 6367367 | Brake cylinder device A brake cylinder device with a built-in automatic shoe clearance adjustment device which prevents a chance of misassembly, loosing, or omitting the spacer. The brake cylinder device includes an adjustment bolt screwed into a pair of pistons symmetrically ... | 04/09/2002 |
| 6343537 | Dual stroke cylinder A piston 14 for sliding in a cylinder 12, a rod 16 of the piston 14, and a sleeve 15 fitted over the rod 16 and passing through a rod hole 13 of the cylinder are provided. A lock portion 18 is provided to an outer periphery of a tip end portion of the rod... | 02/05/2002 |
| 5957028 | Actuator for gear shifting mechanisms for motor vehicles An actuator for a gear shifting mechanism of a motor vehicle has a housing with pressure chambers and one connector opening into each pressure chamber for supplying a pressure medium into the pressure chambers. A control member is positioned in the housin... | 09/28/1999 |
| 5934432 | Actuator system for vehicle automated clutches with electric motor actuator and pressurized fluid override An actuator system (31) for controlling engagement and disengagement of an automated vehicular master clutch (C). The system includes an electric motor (86) controlled actuator (62) for precision positioning of the clutch and a pneumatically controlled ov... | 08/10/1999 |
| 5816131 | Fluid-controlled actuator assembly A fluid-controlled actuator assembly for a gearbox of a vehicle. The actuator is provided with a four-position mobile element, with a first and a second chamber separated in a sealed manner from the mobile element, and with auxiliary positioning elements ... | 10/06/1998 |
| 5357844 | Run-up control for the pressure cheek in a drawing apparatus A run-up control for the pressure cheek in a drawing apparatus achieves stoppage times during the run-up phase by having a pressure cylinder with first and second pressure spaces as well as a control piston which is fixed in its position in the control cy... | 10/25/1994 |
| 5279206 | Variable displacement hydrostatic device and neutral return mechanism therefor A variable displacement radial ball pump (11) is disclosed of the type in which the balls (59) are restrained by a cam ring (25), which is pivotable about a cam pivot pin (27) to vary the displacement of the pump. In accordance with the invention, in orde... | 01/18/1994 |
| 5207111 | Rotary unit The present invention discloses an apparatus for the rotation of, for example, workpieces to be machined, on a carrier which can be set in rotation by a pinion shaft with toothed strips via a rack, the rack being arranged perpendicularly to an axis of the... | 05/04/1993 |
| 5193430 | Air cylinder with intermediate mechanical dead-stop Presented is an air cylinder apparatus including a control mechanism that is operable to interject mechanical dead-stops to control the linear translation of the piston of the air cylinder to predetermined increments of travel.... | 03/16/1993 |
| 5188018 | Linear unit with displaceable ball bearing assembly The present invention discloses a linear unit, especially an apparatus for the machining, transportation and manipulation of workpieces, with a housing and with a carriage which is movable out of the housing and to which a handling appliance or the like f... | 02/23/1993 |
| 5127315 | Brake motor subassembly and process for adjusting such a subassembly A brake motor subassembly comprises a control piston (10) having an internal cavity delimited by a base wall (18) and, at the periphery, by a stepped bore (20, 22, 24) and having a mechanical actuating device acting on the control piston via an automatic ... | 07/07/1992 |
| 5106275 | Arrangement on a pump unit Pump units comprising a metering reciprocating pump with adjustable length of stroke are used in packing machines for filling of packing containers with a metered quantity of flowable contents, e.g. yogurt. Adjustments in the length of stroke in order to ... | 04/21/1992 |
| 5098260 | Position-servo device for positioning a stop in a positive displacement fuel injection system An electro-hydraulic position-servo device to quickly and accurately position a stop element is provided for use with a positive displacement fuel injection system, wherein a shuttle is used to positively displace pre-metered slugs of fuel to unit injecto... | 03/24/1992 |
| 5086863 | All-wheel steering system for motor vehicles An all-wheel steering system for motor vehicles includes an adjusting motor (10) for the rear wheels. The motor has a piston rod on which two fixed working pistons (25 and 25A) and, in a housing segment located between the working pistons, two movable ste... | 02/11/1992 |
| 5071320 | Control system and method for chemical injectors A control system and method for chemical injectors includes a controller which outputs multiple feed set point signals and associated driver signals, each set point signal defining a desired injection capacity for a chemical injector and the associated dr... | 12/10/1991 |
| 5016521 | Self-adjusting servo mechanism for actuating a friction band assembly in a planetary gear set The present invention is directed to a self-adjusting servo mechanism (10). That is, the servo pin (30) presented from the servo mechanism (10) will protract sufficiently to effect operative engagement of a friction band assembly (13) with a rotating memb... | 05/21/1991 |
| 5009068 | Pneumatic cylinder with positioning, braking, and feed rate control A pneumatic piston/cylinder unit comprises primary and secondary pistons operable in first and second cylinder zones respectively. Each of the primary and secondary pistons divide its respective cylinder zone into two chambers, one of the chambers of the ... | 04/23/1991 |
| 4969281 | Hydraulic system for laundry flatwork ironer A hydraulic system for operating the rollers and one or more steam chests in a laundry flatwork ironer. A two-way, variable delivery, high pressure, main pump operates a hydraulic motor driving the ironer rollers. A one-way, fixed delivery, charge pump ke... | 11/13/1990 |
| 4945819 | Clamping apparatus for the rotary spindle of a machine tool The chuck or collet actuating apparatus for a machine tool comprises a rotating clamping cylinder, an axially slidable clamping piston rotating with the clamping cylinder and a coaxial cylindrical projecting portion in the clamping cylinder. The projectin... | 08/07/1990 |
| 4896585 | Adjustable axial piston machine An adjustable axial piston machine is disclosed which has a housing, a cylinder drum and an operating cylinder-servo piston unit capable of being acted upon by control pressure. The cylinder-servo piston unit has a movable part which is being connected wi... | 01/30/1990 |
