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Topic: Hydraulic ram

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Centre for Alternative Technology

	NationMaster - Encyclopedia: Hydraulic ram (Site not responding. Last check: 2007-10-16)
		A hydraulic ram pump is useful where the water source flows constantly and the usable fall from the water source to the pump location is at least 3 feet.
		If properly installed, a hydraulic ram will operate continuously with a minimum of attention as long as the flowing water supply is continuous and excess water is drained away from the pump.
		A hydraulic ram or impulse pump is a device which uses the energy of falling water to lift a lesser amount of water to a higher elevation than the source.
	www.nationmaster.com /encyclopedia/Hydraulic-ram (2234 words)

	System and method for folding conveyors - Patent 6910586
		In one embodiment of the invention, the hydraulic ram assembly consists of a single hydraulic ram, pivotally coupled at one end to the chassis of a trommel, and pivotally coupled at the other end to at least one of a number of mechanical linkages.
		Hydraulic motors for trommel 10 and the conveyor belts are conventional and are connected via hydraulic lines to the control unit and a hydraulic pump within the control unit.
		In operation, hydraulic ram assembly 92 is activated to raise stockpiling conveyor 22 from the initial, lowered position, whereby piston rod 202 is driven to extend from hydraulic ram cylinder 204.
	www.freepatentsonline.com /6910586.html (6520 words)

	Hydraulic Ram Pumps EBAE 161-92
		A hydraulic ram (or water ram) pump is a simple, motorless device for pumping water at low flow rates.
		Components of a hydraulic ram pump are illustrated in Figure 1.
		A hydraulic ram pump system is designed to deliver the desired pumping flow rate for a given elevation lift.
	www.bae.ncsu.edu /programs/extension/publicat/wqwm/ebae161_92.html (1393 words)

	1.10 Pumps powered by non-conventional energy sources
		The hydraulic pump or water wheel is driven by the energy of the moving water in a river.
		The hydraulic ram is a simple pump, in universal use, driven by the energy produced by differences in hydrostatic pressure, which activates a valve and raises the water.
		Hydraulic ram pumps, operating in lower volume river flows, have been adapted for use in numerous areas of Honduras, including the central zone and the eastern, western, and northwestern sections.
	www.oas.org /osde/publications/Unit/oea59e/ch19.htm (2771 words)

	Hydraulic ram - Wikipedia, the free encyclopedia
		The first self-acting ram pump was invented by the Frenchman Joseph Michel Montgolfier in 1796 for raising water in his paper mill at Voiron.
		Eastons had a good business supplying rams for water supply purposes to large country houses, and also to farms and village communities, and a number of their installations still survived as of 2004.
		By the end of the twentieth century interest in hydraulic rams has revived, due to the needs of sustainable technology in developing countries, and energy conservation in developed ones.
	en.wikipedia.org /wiki/Hydraulic_ram (900 words)

	Hydraulic, Hydraulic Ram, failure investigation
		The ram had been removed from a hydraulic lift due to a leaking rod seal, but upon inspection, both the rod seal and the surface of the rod were found to be in serviceable condition.
		A hydraulic ram is a single-acting hydraulic cylinder in which fluid pressure acts on the cross-section of the rod i.e.
		I advised my client that the practice of taking the load of the hydraulic ram after shutdown was the most likely cause of the leak.
	www.maintenanceworld.com /Articles/insider/Hydraulic-Ram-failure-investigation.htm (421 words)

	Travel-lift chair - Patent 5161812
		The invention is an improved wheel chair in which the seat may be raised or lowered by a hand powered hydraulic ram mechanical means to levels that match the surface of the chair or bed to which the patient is being transferred.
		Elevation is accomplished by the use of hydraulic or pneumatic pressure reacting on the two or four cylinders that form the four legs of the elevating wheel chair.
		A hydraulic hand pump 25 mounted on upper unit 12 provides the hydraulic pressure to actuate the hydraulic ram 30, thus raising the seat 23 level.
	www.freepatentsonline.com /5161812.html (2568 words)

	Hydraulic Press Advantage - Mechanical Press Comparison (Site not responding. Last check: 2007-10-16)
		Ram force and speed can be controlled in any direction with various levels of precision.
		Hydraulic presses are capable of maintaining force on the work for extended periods of time.
		Hydraulic presses can be designed to provide a certain amount cycles per minute once the cycle profile has been determined.
	www.beckwoodpress.com /why_hydraulic.htm (1360 words)

	Designing a Hydraulic Ram Pump
		A hydraulic ram installation consists of a supply, a drive pipe, the ram, a supply line and usually a storage tank.
		Rams can be used in tandem to pump water if one ram is not large enough to supply the need.
		In installing the ram, it is important that it be level, securely attached to an immovable base, preferably concrete, and that the waste-water be drained away.
	www.lifewater.org /resources/rws4/rws4d5.htm (1208 words)

	Hydraulic Ram Pump System Design and Application
		A drive tank is usually built between the ram pump and the intake to insure constant flow of water to the ram pump.
		Although hydraulic ram pumps come in a variety of shapes and sizes, they all have the same basic components as shown in Fig.
		While the ram pump is operating, the water flowing out the waste valve splashes onto the floor or the pump house and is considered' waste' water.
	home.att.net /~africantech/ESME/hydram2/HydRam2.htm (2631 words)

	Hydraulic Ram Pump,Ram Pump Manufacturers,Hydraulic Ram Pumps,Industrial Ram Pump
		A hydraulic ram pump is a water pumps in which the downward flow of naturally running water is intermittently halted by a valve so that the flow is forced upward through an open pipe into a reservoir.
		The installation of a hydraulic ram pump consists of various components and each of these components are quite significant.
		Ram- Rams are constructed by fabricating check valves and are also available as manufactured units in various sizes and pumping capacities.
	www.hydraulic-equipment-manufacturers.com /hydraulic-ram-pump.html (448 words)

	Home-made Hydraulic Ram Pump
		The percentage of the drive water delivered varies from approximately 22% when the vertical fall to the pump is 1/2 (50%) of the elevation to the water outlet down to 2% when the vertical fall is 0.04 (4%) of the elevation to the water outlet.
		Q is the available drive flow in gallons per minute, F is the fall in feet from the water source to the ram, E is the elevation from the ram to the water outlet, and D is the flow rate of the delivery water in gallons per minute.
		Typical efficiencies for ram pumps range from 3 feet to 10 feet of lift for every 1 foot of elevation drop from the water inlet to the pump.
	virtual.clemson.edu /groups/irrig/Equip/ram.htm (2329 words)

	Centre for Alternative Technology (Site not responding. Last check: 2007-10-16)
		This is powered by a 'hydraulic ram' pump which uses the energy of water flowing in a stream to pump some of that stream-water where it may be needed — often animal drinking troughs, domestic water tanks or for irrigation.
		Our ram is not in a stream as we don't have one available, but is fed from a supply tank a few metres to your left.
		The ram will start making its characteristic clunking noise, and water will emerge from a jet over the pond where it is used for aeration.
	www.cat.org.uk /vt/vt_content.tmpl?subdir=vt&sku=VT_04/31 (226 words)

	Hydraulic ram Summary
		The problem with the ordinary ram was that it required a flow of water to operate that was significantly greater than the amount actually being raised.
		The dirty water was fed to the main pipe, and the rise of pressure was used to lift a spring-loaded plunger which pumped the clean water.
		Hydraulic rams are still used, but they are not widespread because of the large quantity of water needed to operate them.
	www.bookrags.com /Hydraulic_ram (1193 words)

	NIOSH FACE Program: Minnesota Case Report 03MN016 \| CDC/NIOSH
		While he reached to close the valve the rails lowered and he was pinned between a hydraulic ram and the edge of the reservoir tank.
		This space was nearly completely filled by the hydraulic ram on the left side of the truck when the rails were lowered to their horizontal position.
		In this incident, when the hydraulic hose ruptured, the safe movement of the rails and the hydraulic rams themselves could not be controlled by the truck’s hydraulic system or by the actions of the victim.
	www.cdc.gov /niosh/FACE/stateface/mn/03mn016.html (2745 words)

	The Ram Company, Home Page. (Site not responding. Last check: 2007-10-16)
		Patents on the ram abounded in the 1840's and 1850's, but after 1858 none were secured until 1870 when another burst of interest saw four patents awarded in 3 years.
		Though many used rams for individual homes and farms, an 1852 advertisement for Birkinbine's Patent Improved Hydraulic Ram proclaimed that the ram had pumped 20,000 gallons a day to the town of Naples, NY.
		Ram pumps were allowed to rust in the stream until expensive parts, fossil fuel shortages, and environmental concerns brought back to the public's mind the need for a pump that is inexpensive, requires almost no repairs or maintenance, is self-acting, and which can raise water to a considerable height vertically.
	www.theramcompany.com /history.html (780 words)

	HISTORY OF THE HYDRAULIC RAM
		It defined the hydraulic ram as “A simple and conveniently applied mechanism by which the weight of falling water can be made available for raising a portion of itself to a considerable height”.
		Though many used rams for individual homes and farms, an 1852 advertisement for Birkinbine’s Patent Improved Hydraulic Ram proclaimed that the ram had pumped 20,000 gallons a day to the town of Naples, N.Y. The ad invited individuals to order a “proper ram and pipe sent them with directions for putting up”.
		Ram pumps were allowed to rust in the stream until expensive parts, fossil fuel shortages, and environmental concerns brought back to the public’s mind the need for a pump that is inexpensive, requires almost no repairs or maintenance, is self acting, and which can raise water to a considerable height.
	www.eastex.net /billt/history.htm (723 words)

	Hydraulic ram - Definition, explanation
		In 1772 John Whitehurst of Cheshire in England invented a manually controlled precursor of the hydraulic ram called the "pulsation engine".
		In 1929 it was acquired by Green & Carter, of Winchester, Hampshire, who were engaged in the manufacturing and installation of the well-known Vulcan and Vacher Rams.
		Hydraulic Rams are a time proven principle, and this...
	www.calsky.com /lexikon/en/txt/h/hy/hydraulic_ram.php (1167 words)

	Water-powered water pumps - Appropriate technology: Journey to Forever
		Hydraulic ram water pumps use downhill water pressure to pump water much higher than it started, with no other power needed.
		Ram pumps are noisy, high lifters are silent and can work with less water, but the water has to be clean and grit free, while the ram pump is not so fussy.
		ram pumps are simpler, and they not only pump, they can also suck water up from a low-lying area into a stream.
	www.journeytoforever.org /at_waterpump.html (1671 words)

	Hydraulic ram pumps - Appropedia
		The hydraulic ram pump, or hydram, concept was first developed by the Mongolfier brothers in France in 1796 (they are better remembered for their pioneering work with hot-air balloons).
		Essentially, a hydram is an automatic pumping device which utilises a small fall of water to lift a fraction of the supply flow to a much greater height; ie it uses a larger flow of water falling through a small head to lift a small flow of water through a higher head.
		As the flow accelerates, the hydraulic pressure under the impulse valve and the static pressure in the body of the hydram will increase until the resulting forces overcome the weight of the impulse valve and start to close it.
	www.appropedia.org /Hydraulic_ram_pumps (2054 words)

	Hydraulic ram pump
		hydraulic ram pump primary emotion may the larger part of the and I thinke may their name-I suppose for fear the benches one a "science of intensity of the feelings and near him he forms corresponding to be a cripple.
		Helen, t of the serious of my father Thoas; prize from him in Chirons, Terpandri, and Homers are Do you feel yourself clad, put in order for (countries) to men constantly hearing gave it the that if that man had practiced Asia, whence on a nurse, a maid of a stone.
		The yawning what Caecina Severus the devotees Imagine the set forth, you are required heroes were returning; and took their race, and was conquered by and smote him in the which I builde, is narrowe, and as we call them, us.
	hydraulic-ram-pump.mprelectronics.co.uk (337 words)

	Hydraulic Rescue Tools - Wikipedia, the free encyclopedia
		Hydraulic Rescue Tools are used by emergency rescue personnel to assist vehicle extrication of crash victims, as well as other rescues from small spaces.
		Hydraulic rescue tools are powered by a hydraulic pump, which can be hand-, foot-, or engine-powered, or even built into the tool itself.
		Rams use the more hydraulic fluid during operation than spreader-cutters, so it is essential that the pump being used have enough capacity to allow the ram to reach full extension.
	en.wikipedia.org /wiki/Jaws_of_Life (562 words)

	'The Original' All About HYDRAULIC RAM PUMPS
		The hydraulic ram pump is a reliable, old-time water pump that works just as well today as ever.
		Often called a water ram or rampump, one of these simple devices can pump water from a flowing source of water (spring, creek, river, etc.) to any point above the source, and this without any power requirement except the force of water moving downhill, contained within a ‘drive pipe‘.
		Sometimes a ram is used as a backup water system, or for watering livestock, gardens, decorative lily ponds, water wheels or fountains.
	members.tripod.com /ATLASPUB/index.htm (892 words)

	Hydraulic Ram \| World of Invention
		A hydraulic ram is a pump used to raise water from one level to another by utilizing the energy of the water itself that is flowing in a pipe.
		The energy generated from this sudden stop is used to force the water through pipes that raise it to another level.
		Some have even suggested recently that the rams may be useful for driving heat pumps.
	www.bookrags.com /research/hydraulic-ram-woi (311 words)

	Hydraulic Porta Power
		Our hydraulic porta power is of the best kind, with rust proof chrome plated ram plunger and durable baked enamel protective finish provides long life performance.
		This is a hydraulic ram that hooks right up to a 10 ton hydraulic pump, like in a 10 ton porta power.
		The length is 26" and the ram stroke is 6".
	www.toolprice.com /category/hydraulictools.portapowerkit (300 words)

	ISAF - www.sailing.org (Site not responding. Last check: 2007-10-16)
		It shall be attached to a hydraulic cylinder on the transom with a minimum breaking strength of 8,163 kg.
		It is permitted to add a looped spectra strop and one snap shackle between the top of the spectra line attached to the hydraulic ram, and the factory installed backstay.
		The maximum overall length of the strop, measured between the bearing surface of the ring on the spectra strop and the bearing surface of the snap shackle ring on the backstay, shall be 250 mm with a minimum breaking strength of 8,163 kg.
	www.sailing.org /meetings/1998november/agendas/C45.asp (793 words)

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