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Actor Zeppo Marx patented a "Cardiac Pulse Rate Monitor" in 1969.
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| Number | Title | Issue Date |
| 8002599 | Systems and methods for underwater descent rate reduction Systems and methods for underwater descent rate reduction are provided. In one embodiment, a method for underwater descent rate reduction for an underwater delivery vehicle is provided. The method comprises: opening a first valve based on a first hydrostatic pressur... | 08/23/2011 |
| 7435148 | Hydrostatic EPIRB release A hydrostatic release for securing an emergency position indicating radio beacon (EPIRB) to a shipboard surface to withstand high G-forces while having a release mechanism that if the ship were to sink will release the EPIRB at a pre-determined water pressure which ... | 10/14/2008 |
| 6878024 | Hydrostatic release mechanism A hydrostatic release mechanism is provided which comprises a sealed housing having an interior volume and a tunnel adapted to receive a tether extending therethrough. A depth sensor is mounted to the sealed housing and has a diaphragm covering an opening between th... | 04/12/2005 |
| 6561863 | Pressure actuated triggering system The system and method of the present invention provides an inflation device, such as a life preserver, that is automatically actuated by hydrostatic pressure. A diaphragm that is moveably responsive to fluid force created by fluid pressure actuates a firs... | 05/13/2003 |
| 6224442 | Release unit A device for releasing a link between a first object and a second object is disclosed. The device comprises a body having a holding means for securing the body to the link; a releasing means for releasing the link; a pyrotechnic composition for actuating ... | 05/01/2001 |
| 5573343 | Hydrostatic release device The application describes a hydrostatic release device, suitable for releasing life-saving equipment carried on a ship or aircraft when the ship or aircraft sinks or ditches in the sea. A change in ambient pressure is detected by a pressure sensor which o... | 11/12/1996 |
| 5518430 | Triggering mechanism The present invention provides a triggering mechanism that utilizes stepped triggering of successively higher-pre-loaded, counterdirected, nested stages. The present invention thus presents a triggering mechanism whereby an input force of a first value ca... | 05/21/1996 |
| 5438949 | Hydrostatic release with a composite plunger assembly A hydrostatically releasable coupling assembly for releasably securing a buoyant object to a vessel with a lashing strap. The coupling assembly includes a pair of lashing plates, a cooperative latching mechanism carried by the lashing plates for releasabl... | 08/08/1995 |
| 5419725 | Triggering mechanism The present invention utilizes low-friction, stepped triggering of successively higher-pre-loaded, counterdirected, nested stages in a compact configuration to efficiently multiply an input force. The present invention thus presents a novel force-multiply... | 05/30/1995 |
| 5365873 | Hydrostatic pressure sensors A hydrostatic pressure release for releasing a life raft or the like when a ship sinks has a flexible diaphragm sealing a chamber on one side and exposed externally on its opposite side. A ceramic vent plug is mounted on the diaphragm so that it is protec... | 11/22/1994 |
| 5199374 | Aerial location self-actuating emergency sea surface marker for capsized vessels An emergency location marker system for capsized vessels is housed in an emergency location marker canister or container (10) secured by a bracket (22) to an exposed or outside surface of the vessel (60). An inflatable aerial location marker (40) is defla... | 04/06/1993 |
| 5197911 | Automatic release mechanism A release mechanism for a buoyant object which includes a strap enclosing the object, an engaging mechanism for releasably engaging ends of said strap and an actuator for actuating the release of the ends of said strap in response to an increase in water ... | 03/30/1993 |
| 5080684 | Floating device for releasing safety equipment Floating device for releasing safety equipment, this device being fixed on a unit such as a ship and comprising a support on which a movable member is fixed under the influence of hydrostatic pressure, this member acting on a bolt by means of which the sa... | 01/14/1992 |
| 4981453 | Emergency transmitter buoy and bracket assembly An emergency position indicating radio beacon is controlled by an annular switch ring which rotates to ON, OFF, SET, and TEST positions. In the SET position, the buoy transmitter automatically turns on in response to removal of the buoy from a mounting br... | 01/01/1991 |
| 4968277 | Automatic flotation device An automatic flotation device is disclosed which uses an electric circuit to fire a detonator or allow a spring loaded arm to open a CO2 cartridge which then in turn inflates a bladder which lifts a swimmer to the surface. The circuitry utilize... | 11/06/1990 |
| 4961714 | Mounting arrangement for a marine radio distress beacon An arrangement for mounting a radio distress beacon (1) comprises a split casing (4) which is bouyant and which is normally held together and to the deck of a vessel by a harness (7). If the vessel should sink the harness is released, the casing rises to ... | 10/09/1990 |
| 4848262 | Pressure sensitive release device A release mechanism is triggered when the pressure differential on the siall of a sealed container reaches a predetermined threshold level at which the container either implodes or explodes to sufficiently decrease the spacing between the ends of the con... | 07/18/1989 |
| 4721486 | Automatic marker buoy release mechanism A marker buoy releasing mechanism for marking the location of a sunken boat includes an air tight housing having a differential pressure switch mounted therein for sensing the pressure within the housing and externally thereof. When the differential press... | 01/26/1988 |
| 4668200 | Life buoy with a radar responder A life buoy equipped with a radar responder adapted to transmit waves in response to radar waves from a searcher, the life buoy comprising a hull member of a rigid plastic hollow construction, the hull member water-tightly accommodating a receiving antenn... | 05/26/1987 |
| 4571788 | Double action pressure release An apparatus for use in a fluid medium which activates at a deeper depth and then releases at a lesser depth. A rod depresses a spring in a housing. The rod is prevented from being ejected from the housing by a ball bearing which engages between openings ... | 02/25/1986 |
| 4563108 | Pressure actuated release mechanism A pressure-actuated release mechanism is assembled using a prebuckled pipe segment as a pressure-triggering mechanism. The trigger mechanism is employed to attach buoys to an offshore structure or pipeline under construction. The attached buoys move with ... | 01/07/1986 |
| 4195380 | Life saving apparatus for vessels A life saving buoy of the type intended to float off the deck of a sinking vessel and to remain anchored to the vessel by an anchoring cable, to provide a mooring for life boats or life rafts and to give signals to aid rescurers; having improved structura... | 04/01/1980 |
| 4067199 | Method and apparatus of launching floats to lighten underwater conduits To enable the release and consequent recovery of a support float which supports a load, e.g. a pipe, as it is lowered to the sea bed, a marker buoy is lowered with the float to be released when the load reaches the sea bed, the marker buoy having an infla... | 01/10/1978 |
| 4065823 | Hydrostatically activated release mechanism This invention relates to a hydrostatically activated release mechanism for vehicles which are subject to accidental submersion in water. The release mechanism contains an activating device, a latching mechanism which is connected to buoyant seat cushions... | 01/03/1978 |
| 4040135 | Emergency locator system for locating and retrieving sunken vessels An emergency locator system for locating and retrieving sunken vessels and vessels in distress comprising in combination a base, a buoyant float releasably mounted thereon and a long line connecting the base and float. The base is adapted to be mounted on... | 08/09/1977 |
| 4020514 | Bottom release mechanism for a sonobuoy A bottom release mechanism for a sonobuoy is provided in which a removable end cap is provided with a deformable detent member in the form of either a leaf spring or frangible member, which normally maintains a spring-loaded pin in locking engagement with... | 05/03/1977 |
