Did You Know...
...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7536944 | Air pressure cylinder for positioning control A slight-vibration-suppressing mechanism is attached to a piston rod 6 of an air pressure cylinder that stops the piston at a target position by means of a positioning control. The slight-vibration-suppressing mechanism includes a friction member formed of a ... | 05/26/2009 |
| 7273026 | Roller follower body The present invention relates to a roller follower, comprising an outer surface, enclosing a first cavity, a second cavity, and a transition opening, wherein the first cavity includes a first inner surface configured to house a cylindrical insert the second cavity i... | 09/25/2007 |
| 7216581 | Piston locking actuator A locking actuator may be locked in an extended position. A piston with a first and a second end defines a recess that originates proximate to the first end. A strut is adapted to at least partially nest within the recess and the strut is adapted to hold at least on... | 05/15/2007 |
| 7195197 | Techniques for controlling a fin with unlimited adjustment and no backlash A fin control assembly includes a housing, an arm configured to couple to a fin and to steer the fin relative to the housing, and a locking member disposed within the housing. The locking member is configured to (i) lock the arm in a substantially fixed state to inh... | 03/27/2007 |
| 7125058 | Locking device with solenoid release pin A locking device with a solenoid release actuator includes a housing, a plunger axially slidable within the housing, a biasing member for biasing the plunger in a first direction, one or more locking balls, and the locking balls disposed in an aperture in the housin... | 10/24/2006 |
| RE38843 | Hydrostatic slewing drive A hydrostatic slewing drive suitable for use in construction equipment, in particular excavators, has a pinion shaft that is rotationally mounted in a housing. A slewing pinion is connected to the pinion shaft. An axial piston motor that utilizes a swashplate constr... | 10/25/2005 |
| 6604450 | Hydrostatic slewing drive A hydrostatic slewing drive suitable for use in construction equipment, in particular excavators, has a pinion shaft that is rotationally mounted in a housing. A slewing pinion is connected to the pinion shaft. An axial piston motor that utilizes a swashp... | 08/12/2003 |
| 6543686 | Identification card and billing process with an identification card A method and apparatus for billing connections of a subscriber identified by a SIM card in a telecommunications network to the subscriber user, including determining the duration and time of the connection using a time-measuring device integrated into the... | 04/08/2003 |
| 5655878 | Higher harmonic control apparatus for a helicopter rotor A control system has an HHC actuator having a basal portion and a movable portion. A load acting on the control system is detected by a semiconductor gauge. The load detected by the semiconductor gauge is compared with a threshold value in a computer. If ... | 08/12/1997 |
| 5540138 | Lockup and release device A coupling mechanism, comprising a relatively fixed member and a relatively moveable member, is configured such that said moveable member may be securely connected in a locked position with said relatively fixed member by remote control of a shiftable mem... | 07/30/1996 |
| 5220706 | Air damper An air damper utilizing only recirculating internal air for dampening in one direction of movement an openable object includes inner and outer cylinder members, primary and secondary shafts, first and second controllable orifice structures, primary and se... | 06/22/1993 |
| 5063828 | Actuator with a lock mechanism An actuator including a cylinder having a longitudinal bore, a piston slidably and sealingly inserted into the cylinder, and a lock mechanism for temporarily locking the piston, the cylinder including a cylinder body having the longitudinal bore, a cylind... | 11/12/1991 |
| 4836091 | Hydraulic work support A spring actuated plunger work support seeks variable tolerance level of workpiece and is hydraulically locked in place to provide resistance to workpiece deflection imposed by processing loads. A collet with independent steel segments in a molded rubber ... | 06/06/1989 |
| 4700925 | Pressure medium operated servomotor arrangement The servomotor arrangement has a moving system comprising a piston movable in a cylinder. A latching or retaining member movable transversely of the direction of movement of the system is provided to retain or latch the moving system. The latching member ... | 10/20/1987 |
| 4629167 | Piston cylinder type damper The piston cylinder type damper comprises a cylinder connected to either member of the pair of a main body and an openable object, and a piston connected to the other member of the pair and adapted to fit into the cylinder and the piston incorporates ther... | 12/16/1986 |
| 4619188 | Pneumatic cylinder device with locking mechanism A pneumatic cylinder device with a locking mechanism has a pneumatic cylinder constituted by a cylinder, a piston slidably received in the cylinder and a piston rod extended from the piston outwardly of the cylinder, and a locking mechanism connected to t... | 10/28/1986 |
| 4525999 | Actuator for deploying flexible bodies A pneumatic actuator for deploying flexible bodies and the like is disclosed. The actuator is a plurality of telescoping tubes made of high temperature resistant graphite material which are extended by the pressure of gases produced internally by a gas ge... | 07/02/1985 |
| 4466334 | Hydraulic aircraft/stores cartridge A hydraulic cartridge suitable for releasing stores in aircraft relies on a ressurized piston rod which extends upon release of hydraulic pressure. The piston rod is enclosed in a cylinder and connected to a source of hydraulic fluid. Upon arming of the pi... | 08/21/1984 |
| 4458887 | Gas spring locking mechanism A gas spring comprising a cylinder, a rod slidably extending from the cylinder, and a novel locking mechanism. The mechanism comprises first and second axially contiguous recesses in the circumference of the rod, a locking member normally located in the f... | 07/10/1984 |
| 4422605 | Reverser for jet engine The invention relates to a thrust reverser for the jet engine of an aircraft. According to the invention, the unlocking of the doors with a view to passage from their folded position to their extended position, is effective only after they have been previ... | 12/27/1983 |
| 4367674 | Actuator device An actuator device used with an engine-idle control system of an automobile provided with an air-conditioner, and is adapted so as to operate an operating rod in association with a throttle valve opening lever of an internal combustion engine. The actuato... | 01/11/1983 |
| 4323001 | Operating and bracing jack having an internal locking mechanism A bracing jack comprising a cylinder and a jack bar slidable in the cylinder from a bar extended position to a bar retracted position, the jack having an internal locking mechanism including a hydraulic and a mechanical actuator for unlocking under load.... | 04/06/1982 |
| 4257315 | Assembly with relatively displaceable members An assembly comprising an inner and an outer cylindrical members, the inner member being displaceable within the outer member and provided with an annular recess, a locking ring being housed in the recess to allow displacement of the inner member in a fir... | 03/24/1981 |
| 4242945 | Assembly with relatively displaceable members An assembly comprising an inner and an outer cylindrical members, the inner member being displaceable within the outer member and provided with an annular recess, a locking ring being housed in the recess to allow displacement of the inner member in a fir... | 01/06/1981 |
| 4130205 | Loading arm A loading arm apparatus having a displaceable main shaft formed as a fluid operable cylinder with a fixed piston which may be clamped at any position along its displacement by a fluid operable clamping means operable against its wall. A guide rod placed i... | 12/19/1978 |
| 4024800 | Actuating and bracing jack An actuating and bracing jack comprising a cylinder and a rod which are pivotably connected at their free ends to a fixed member and to a moveable member respectively. The cylinder has at least at one of its extremities, an internal resilient catch member... | 05/24/1977 |
| 3978771 | Mechanical piston retention for free wheeling A fixed displacement fluid motor or pump of the ball or roller piston type in which a plurality of axially or radially extending reciprocating pistons coact with a cam track to produce output motion or to generate pressure fluid output, respectively. A me... | 09/07/1976 |
| 3969988 | Arresting device for impact drive tools An impact drive tool is provided with a percussive piston arranged in a cylinder. A rod on the piston is mounted to drive a nail or other object into a workpiece. A valve arrangement is provided to apply compressed air to the upper surface of the piston, ... | 07/20/1976 |
