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4909672 Offshore structure
Marine Pollution Bulletin
purge the arm of fluid prior to disconnection in order to prevent fluid spillage.
4900433 VERTICAL OIL SEPARATOR Alan J Dean, Hans Hopper, Skene, United Kingdom assigned to The British Petroleum Company p I c A vertical separator for separating crude oil into liquid and gas phases composed of an outer casing and two further sets of concentric tubing to enclose two annuli and a central passage, one annulus having an inlet to receive crude oil, the other annulus having an outlet for separated gas, each at the top of the separator. The central passage collects produced oil with a pump near its base and a pump drive pipe extending up it. The crude oil may flow down its annulus with a swirling motion which can be induced and assisted by a tangential inlet, and/or a cyclone at the top, and one or more helices in the annulus. The separator may be used for underwater wells and may extend partially or wholly into the sea bed with a protective cemented external casing around it.
4907992 OIL DISTRIBUTION BOX FOR A MARINE CONTROLLABLE PITCH PROPELLER
the housing, and a journal clearance seal between the housing and the servo chamber cylinder in register with the passage and the passageway. A normally closed pilot-operated check valve in each passageway isolates the servo chamber from the clearance seals except when oil is supplied to the auxiliary servo to produce a pitch change.
4908127 DEVICE FOR THE COLLECTION OF VARIOUS SUBSTANCES PRESENT IN A LIQUID Jacques J Metais, 75006 Paris, France Devices enabling to collect substances dispersed in a liquid or floating on the surface of a liquid. The device may be configured as a floating barrier, for example a boat or a buoy. It comprises at least a housing (1) communicating with the liquid through orifices (3), (5) fitted with shutters (4), (6), and with the atmosphere through orifices (2). A certain alternating variation of the level of the surface (S) of the liquid with a respect to the housing is determined, and maintains a circulation of streams between the liquid medium and the housing. Substances of various natures and densities, brought by the streams (a) entering the housing are collected by the latter, they may be conveyed up to the discharge ports. The invention may be applied for example to combat chronical and accidental sea pollutions, and to collect various samples of said marine medium.
4909672 Joseph Cavallaro, Arthur J Richards, Charles Busche assigned to Bird-Johnson Company
OFFSHORE STRUCTURE Michael V Hancock assigned to Earl and Wright
An oil distribution box for a marine controllable pitch propeller of the type having a main hydraulic servo within a hub for controlling the pitch of propeller blades rotatably carried by the hub and including a directional valve actuated by a tubular valve rod extending through the propeller shaft from the oil distribution box comprises an outer stationary housing, a shaft received within the housing and coupled to the propeller shaft and an auxiliary servo chamber cylinder coupled to the shaft. A piston received in the servo chamber is coupled to the valve rod. Oil is supplied to the valve rod through an elongated annular supply chamber defined between the shaft and the valve red by spaced-apart seals, a port in the valve rod opening to the supply chamber, a port in the shaft opening to the supply chamber and a journal clearance seal between the housing and shaft in register with the port in the shaft. Oil is supplied to the servo chamber selectively to the chamber sections on the respective opposite sides of the piston through, for each section of the servo chamber, a supply-return passageway in the cylinder communicating with the servo chamber, a passage in 362
A lattice framework to form or when forming an offshore structure capable of supporting a deck above the water for offshore operations, such as drilling for oil or gas for exploration or production as well as radar stations and the like where it is desired to maintain a stable platform in a fixed position over the sea bed, having four main legs which branch out into buttresses to support a spread base at the lower part of the structure and in which two of the main legs form launch rails on which the structure can be launched from a barge.
4910912 AQUACULTURE IN NONCONVECTIVE SOLAR PONDS 0 Presto Lowrey Apparatus is presented for cultivating aquaculture and mariculture crops predominantly in the
purge the arm of fluid prior to disconnection in order to prevent fluid spillage.
4900433 VERTICAL OIL SEPARATOR Alan J Dean, Hans Hopper, Skene, United Kingdom assigned to The British Petroleum Company p I c A vertical separator for separating crude oil into liquid and gas phases composed of an outer casing and two further sets of concentric tubing to enclose two annuli and a central passage, one annulus having an inlet to receive crude oil, the other annulus having an outlet for separated gas, each at the top of the separator. The central passage collects produced oil with a pump near its base and a pump drive pipe extending up it. The crude oil may flow down its annulus with a swirling motion which can be induced and assisted by a tangential inlet, and/or a cyclone at the top, and one or more helices in the annulus. The separator may be used for underwater wells and may extend partially or wholly into the sea bed with a protective cemented external casing around it.
4907992 OIL DISTRIBUTION BOX FOR A MARINE CONTROLLABLE PITCH PROPELLER
the housing, and a journal clearance seal between the housing and the servo chamber cylinder in register with the passage and the passageway. A normally closed pilot-operated check valve in each passageway isolates the servo chamber from the clearance seals except when oil is supplied to the auxiliary servo to produce a pitch change.
4908127 DEVICE FOR THE COLLECTION OF VARIOUS SUBSTANCES PRESENT IN A LIQUID Jacques J Metais, 75006 Paris, France Devices enabling to collect substances dispersed in a liquid or floating on the surface of a liquid. The device may be configured as a floating barrier, for example a boat or a buoy. It comprises at least a housing (1) communicating with the liquid through orifices (3), (5) fitted with shutters (4), (6), and with the atmosphere through orifices (2). A certain alternating variation of the level of the surface (S) of the liquid with a respect to the housing is determined, and maintains a circulation of streams between the liquid medium and the housing. Substances of various natures and densities, brought by the streams (a) entering the housing are collected by the latter, they may be conveyed up to the discharge ports. The invention may be applied for example to combat chronical and accidental sea pollutions, and to collect various samples of said marine medium.
4909672 Joseph Cavallaro, Arthur J Richards, Charles Busche assigned to Bird-Johnson Company
OFFSHORE STRUCTURE Michael V Hancock assigned to Earl and Wright
An oil distribution box for a marine controllable pitch propeller of the type having a main hydraulic servo within a hub for controlling the pitch of propeller blades rotatably carried by the hub and including a directional valve actuated by a tubular valve rod extending through the propeller shaft from the oil distribution box comprises an outer stationary housing, a shaft received within the housing and coupled to the propeller shaft and an auxiliary servo chamber cylinder coupled to the shaft. A piston received in the servo chamber is coupled to the valve rod. Oil is supplied to the valve rod through an elongated annular supply chamber defined between the shaft and the valve red by spaced-apart seals, a port in the valve rod opening to the supply chamber, a port in the shaft opening to the supply chamber and a journal clearance seal between the housing and shaft in register with the port in the shaft. Oil is supplied to the servo chamber selectively to the chamber sections on the respective opposite sides of the piston through, for each section of the servo chamber, a supply-return passageway in the cylinder communicating with the servo chamber, a passage in 362
A lattice framework to form or when forming an offshore structure capable of supporting a deck above the water for offshore operations, such as drilling for oil or gas for exploration or production as well as radar stations and the like where it is desired to maintain a stable platform in a fixed position over the sea bed, having four main legs which branch out into buttresses to support a spread base at the lower part of the structure and in which two of the main legs form launch rails on which the structure can be launched from a barge.
4910912 AQUACULTURE IN NONCONVECTIVE SOLAR PONDS 0 Presto Lowrey Apparatus is presented for cultivating aquaculture and mariculture crops predominantly in the