"The wireless music box has no imaginable commercial value. Who would pay for a message sent to nobody in particular?"
David Sarnoff, American radio pioneer ; 1921
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| Number | Title | Issue Date |
| 7213852 | Lifting apparatus without electric cable The invention relates to a spreader system without electric cables for lifting goods containers. The spreader system comprises a spreader and two pulley sets. Each pulley of the pulley sets is fitted with a geared ring, and gears are fixed on the headblock of the sp... | 05/08/2007 |
| 7195296 | Portable remote hydraulic activator An apparatus that remotely actuates a hydraulic motor of a hydraulic device including a mounting device supported by the hydraulic device; a hydraulic pump located on the mounting device for supplying pressurized fluid to the hydraulic motor; a driving device locate... | 03/27/2007 |
| 6896305 | High-load capability non-explosive cable release mechanism A high-load capability non-explosive cable release mechanism for retaining the adjacent ends of two cables and releasing them upon receiving a signal from a remote source. The cable release mechanism has a casing for housing two non-explosive actuators (NEAs), which... | 05/24/2005 |
| 6474922 | Remote operation auxiliary hoist control and precision load positioner An electromechanical, remotely operated Auxiliary Hoist Control and Precision Load Positioner system and device is disclosed utilizing a Radio Frequency Hand Controller transceiver Unit distal to a Radio Frequency Hoist Controller Transceiver Unit for rai... | 11/05/2002 |
| 6241298 | Release mechanism The present invention relates to a release mechanism (1) for use in supporting a load (6) from a crane. The release mechanism (1) comprises a remotely operable release hook (2) for supporting by a cable (4) a load (6). The hook (2) is provided with an eje... | 06/05/2001 |
| 6010171 | Apparatus for lifting objects having a hollow cylindrical core with remote power-actuated release Prior lifting probes automatically release from the core of the paper roll as soon as the roll is placed on a surface and the lifting pressure from the cable is released. In some situations that can be undesirable, since some adjustment or juggling of the... | 01/04/2000 |
| 5871249 | Stable positioning system for suspended loads A stable positioning system for a suspended payload. A stabilizer, control unit and positioner are located above a suspended payload. The stabilizer includes a plurality of flywheels within a casing. The axis of rotation of each flywheel is aligned with o... | 02/16/1999 |
| 5636888 | Remote-controlled latch assembly A remote-controlled latch assembly having a latch plate assembly with a latch plate attached to a shank of a hoist hook. A latch is attached to the latch plate and is disposed across a throat of the hook. A latch operating assembly is also attached to the... | 06/10/1997 |
| 5609378 | Automatic crane hook safety latch A device for remotely opening the safety latch of a hook characterized by an actuating link attached to the safety latch that is selectively movable between a first position, opening the safety latch, and a second position, closing the safety latch. The d... | 03/11/1997 |
| 5580113 | Remote control crane/load safety shackle A crane/load safety shackle that includes a yoke having a slot that opens along one side edge of the yoke, and a buckle opening for securing the yoke to a crane load line such that the slot opens downwardly. A pin moveably slidably extends laterally acros... | 12/03/1996 |
| 5443294 | Single-line clamshell bucket A single-line clamshell bucket is provided comprising an upper sheave housing and an upper sheave assembly connected to the upper sheave housing. The bucket also comprises a lower sheave assembly vertically aligned beneath the upper sheave assembly in a m... | 08/22/1995 |
| 5205544 | Remotely controlled winch A remotely controlled winch designed for use with a tower crane located at a building site to enable a building panel to be raised from the bed of a truck into the proper position for installation on the side of the building. The building panel normally r... | 04/27/1993 |
| 4773689 | Apparatus for clamping to the end of a pipe Releasable spider-type clamping apparatus for clamping to the end of a pipe comprises a system including a normal industrial line connection between a supply and control unit and the spider and a controllable operating device on the spider itself for oper... | 09/27/1988 |
| 4709952 | Choker hook assembly In logging and other handling operations a cable is looped about an elongated object and cinched tight through a choker hook assembly in order to transport the objects. A remotely controlled hook assembly has a body and a releasable latch arm through whic... | 12/01/1987 |
| 4664559 | Remotely operated magnetic release for anchored aquatic instrumentation A latch mechanism (release) for use in anchoring equipment and devices submerged in water, held closed by a permanent magnet and which can be automatically or remotely opened by diverting the magnetic field. The release is held closed by the magnetic attr... | 05/12/1987 |
| 4611842 | Releaseable hook This invention is for a remotely controlled release hook. The operator of the release hook is at a safe distance away from the release hook and therefore away from a dangerous and hazardous area. The operator need not travel, in hazardous conditions, to t... | 09/16/1986 |
| 4573725 | Remote controlled crane hook coupler A remote operable coupler for rapidly connecting the loading hook of a crane, or the like, to a load to be hoisted comprises a load collar that is attached to the load and an upper unit support on the crane hook. The load collar has a funnel shaped apertu... | 03/04/1986 |
| 4569548 | Remotely releasable choker An improvement in a remotely controlled hook assembly that has a body with an eye and a releasable latch arm together with a slidable pin for locking the latch arm includes a cam surface mounted on the latch arm. The cam is in line and engagable with the ... | 02/11/1986 |
| 4526413 | Remote controlled self-powered excavator apparatus A self-contained system eliminates need for hydraulic or other lines from a crane to a grapple or clamshell bucket on the end of the crane hoist line. A wireless (radio or sonic) portable remote-control unit sends signals to a hydraulic power system carri... | 07/02/1985 |
| 4417758 | Remotely releasable choker In logging and other handling operations, a cable is often looped about the elongated object and cinched tight through a choker hook assembly in order to transport the objects. A remotely controlled hook assembly has a body, including an eye for the passa... | 11/29/1983 |
| 4416480 | Pneumatic release for load hook The lifting of a load moves a piston to pump a charge of air into a small compressed air reservoir above a load hook. A remote control radio signal opens a valve to transmit the air pressure to the load hook causing the hook to release itself from its loa... | 11/22/1983 |
| 4381872 | Remote controlled clamshell bucket apparatus and method of using same The disclosed invention relates to a single hoist line operated clamshell bucket apparatus and method of use. The bucket apparatus is loaded in the usual manner at a first location for transporting bulk material to a second location where it is discharged... | 05/03/1983 |
| 4303269 | Lifting and material handling apparatus The invention relates to a lifting apparatus which can be used to handle, for example, containers, steel ingots, packages, logs, pulp, steel sheets, and so forth. It consists of a lifting arrangement, a hinge block, and lower lifting arms pivotably connec... | 12/01/1981 |
| 4293155 | Log handling and transport system A grouping of elongated objects such as logs are supported in a pair of elongated wire slings that are releasably attached to an overhead frame. When loading logs onto ships, the overhead frame is attached to the ship's gear for use. For loading, the fram... | 10/06/1981 |
| 4136415 | Underwater release mechanism An underwater release mechanism for a shackle including a shaft releasably journaled in a casing and held in position by a frangible link to be spring biased to release a shackle hook upon remote actuation causing the link to fracture whereby the shackle ... | 01/30/1979 |
| 4043580 | Cable-controlled grab device A cable-controlled grab device possessing a pair of scoops directly and linkably connected to a support yoke. A central shaft has the scoops pivotably mounted at opposite ends thereof. An upper portion of tackle is secured to the yoke while between a lowe... | 08/23/1977 |