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Topic: Head (hydraulic)

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	Head positioning for a belt grinder - Patent 4262455
		A hydraulic cylinder is provided for moving the contact wheel assembly with respect to the vertical column for controlling the height of the grinding head with respect to the work table.
		The hydraulic cylinder is used for raising and lowering the grinding head assembly.
		Hydraulic cylinder 62 is disposed between a fixed portion of bed 20 and table 22 and as the operating rod of cylinder 62 moves between its extended and retracted position table 22 is also moved.
	freepatentsonline.com /4262455.html (7946 words)

	Dakota--Hydrology 6--Steady-state Flow System
		The hydraulic head at any point in the flow system is a measure of the potential energy per unit weight of ground water at that point (Freeze and Cherry, 1979).
		In a confined aquifer the hydraulic head is above the top of the aquifer unit whereas in an unconfined or water table aquifer unit, the hydraulic head is within the unit.
		The hydraulic head difference between the Dakota aquifer and the overlying water table in the Denver basin and adjacent areas to the east.
	www.kgs.ku.edu /Dakota/vol1/hydro/hydro06.htm (1022 words)

	Combined pneumatic-hydraulic press head with high actuation speed - Patent 5247871
		Presses with combined pneumatic-hydraulic actuation generally comprise a head which is constituted by a substantially cylindrical body in which a main cylindrical chamber is defined; a main piston is axially slidingly accommodated in said chamber and its stem protrudes from one side of the head.
		In this manner, the press head operates like a hydraulic press and the pressure increase determined by the advancement of the actuation stem 19 is discharged onto the main piston 4 and thus onto its stem 4a, which performs the treatment of the part 8.
		The press head thus conceived is susceptible to numerous modifications and variations, all of which are within the scope of the inventive concept; all the details may furthermore be replaced with technically equivalent elements.
	www.freepatentsonline.com /5247871.html (3226 words)

	(via CobWeb/3.1 planetlab2.netlab.uky.edu) (Site not responding. Last check: 2007-09-02)
		The hydraulic conductivity of a soil is a measure of the soil's ability to transmit water when submitted to a hydraulic gradient.
		The hydraulic conductivity depends on the soil grain size, the structure of the soil matrix, the type of soil fluid, and the relative amount of soil fluid (saturation) present in the soil matrix.
		The saturated hydraulic conductivity is then evaluated as a function of the geometrical dimension of the cavity in the piezometer tube, the dimensions of the aquifer, and the measured rate of rise of the water table in the tube.
	web.ead.anl.gov.cob-web.org:8888 /resrad/datacoll/conuct.htm (5000 words)

	Hydraulic head - Wikipedia, the free encyclopedia
		Hydraulic head is a specific measurement of water pressure or total energy per unit weight above a datum.
		Hydraulic head can similarly be measured in a column of water using a standpipe piezometer by measuring the height of the water surface in the tube relative to a common datum.
		The pressure head is the equivalent gauge pressure of a column of water at the base of the piezometer, the velocity head is the kinetic energy from the motion of water, and the elevation head is the relative potential energy in terms of an elevation.
	en.wikipedia.org /wiki/Head_(hydraulic) (1276 words)

	USGS OGW, Branch of Geophysics: Vertical Flowmeter Logging
		Hydraulic head is an indicator of the total energy available to move ground water through an aquifer.
		Fluid flows from the fracture with higher head toward the fracture with lower head, causing vertical flow in the borehole.
		The composite head in an open hole is the sum of the transmissivity-weighted heads of the individual fracture zones and is dominated by the head of the most transmissive zone.
	water.usgs.gov /ogw/bgas/flowmeter (1589 words)

	GroundwaterSoftware.com - January 2006 Newsletter: Water Level Meter
		Hydraulic head is the driving force behind groundwater flow.
		The dimensions of the head terms are length; meters of water or feet of water, where 'of water' emphasizes that these measurements are dependent on the fluid density.
		The instrumentation required in the field to measure hydraulic head is a tube or pipe inserted into the ground in which the elevation of water can be measured.
	www.groundwatersoftware.com /newsletter/jan06/index.htm (845 words)

	TimberKing \| Serving American Sawyers Since 1929
		Standard hydraulics and electric blade cluth mean you stand in one place to operate mill.
		Hydraulic controls are direct-drive for smooth, variable control...eliminates jerky on/off found with electric-control hydraulics.
		Standard hydraulics and electric blade clutch mean you stand in one place to operate mill.
	www.timberking.com /1600.htm (838 words)

	Groundwater Movement
		Many factors influence groundwater movement such as hydraulic head, hydraulic gradient, and velocity which was based on Darcy's Law.
		It is the change in hydraulic head over the change in distance between the two monitoring wells or dh/dl.
		Velocity is calculated by using hydraulic conductivity, porosity, and hydraulic gradient.
	www.co.portage.wi.us /Groundwater/undrstnd/gwmove2.htm (534 words)

	SILENCER - Accessible
		A shear pin allows the head restraint bar to break away, preventing injury to the animal or damage to the equipment should operator error occur during the use of the restraint.
		To use the hydraulic head restraint simply remove the standard neck extender bar located opposite the head restraint (The hydraulic restraint in vertical position works as a neck extender with neck access when extra control of head isn't required).
		The hydraulic head restraint can easily be removed if not needed.
	www.molysilencerchutes.com /Accessibility.htm (302 words)

	TimberKing \| Serving American Sawyers Since 1929
		The B-20 was the first portable bandmill equipped with crucial features like hydraulic chain log turners and hydraulic vertical log stops, features that only now — 20 years later — have been adopted by other brands.
		Hydraulic features mean you spend less time handling logs and more time sawing them.
		Protected hydraulic lines means there’s no need to worry about damage from over-hanging branches and limbs when you’re pulling your mill into a tight spot.
	www.timberking.com /b.htm (830 words)

	Polyurethane Process Industries - Hydraulic System Components (Site not responding. Last check: 2007-09-02)
		Premature failure of hydraulic pumps and manifold blocks, recurring oil leaks and frequent replacement of valves and other components are common signs of pressure spikes and a poorly designed mix head hydraulic system.
		Flow Control Valves increase the life of mix heads and seals by reducing the flow of hydraulic oil to mix head pistons.
		These two-way, hydraulic cartridge valves are pilot operated by solenoid and unload the pump by directing flow back to the tank.
	www.pu-process.com /ppi_pages/products/hydraulic.html (420 words)

	Hydraulic Head - Find, Compare, and Buy at Shopping.com
		Hydraulics feature 2 plies that sandwich a thin layer of oil to...
		Combines clear 12", 13", and 16" Hydraulics with a 14" ST Dry Snare for increased attack and...
		Hydraulics feature 2 plies that sandwich a thin layer of oil to give the fat, wet sound that was pioneered in the '70s.
	www.shopping.com /xGS-Hydraulic_Head (605 words)

	Hydraulics Web : Hydraulic Head (via CobWeb/3.1 planetlab2.netlab.uky.edu) (Site not responding. Last check: 2007-09-02)
		A spreadsheet method of estimating best-fit hydraulic gradients using head data from multiple wells.
		Hydraulic equipment for installation and removal of coupling hubs, compressorwheels, thrust disks, and cross head slides.
		Hydraulics Web excludes all liability of any kind (including negligence) in respect of any third party information or other material made available on, or which can be accessed using, this Website.
	www.hydraulicsweb.com.cob-web.org:8888 /hydraulichead/index.php (798 words)

	D5084-03 Standard Test Methods for Measurement of Hydraulic Conductivity of Saturated Porous Materials Using a Flexible ...
		There are six alternate methods or hydraulic systems, that may be used to measure the hydraulic conductivity.
		Other items, such as use of higher hydraulic gradients, lower viscosity fluid, elimination of any possible chemical gradients and bacterial growth, and strict verification of leakage, may also be considered.
		By tradition in U.S. practice, hydraulic conductivity is reported in centimeters per second, although the common SI units for hydraulic conductivity is meters per second.
	www.astm.org /DATABASE.CART/REF_PAGES/D5084.htm (879 words)

	Tank Head Forming Hydraulic Press - 400 Ton Capaci (Site not responding. Last check: 2007-09-02)
		Another example of Beckwoods design capabilities is our line of Tank Head Forming Presses.
		Used in the tank head forming rocess by a leading building contractor
		100 ton hydraulic blank holding system consisting of 4 cylinders extending a 6" thick pressure plate with a 4" x 6" rib reinforcement with a 24½" diameter hole on center
	www.beckwoodpress.com /store2.asp?item=150 (179 words)

	Torque Tools \| Impact Sockets \| Hydraulic Nut Splitters
		Depth of hex openings is designed to accommodate the full standard fastener head.
		Each model is sold complete with hydraulic cylinder, housing, chisel, set of allen keys, spacer set and is packaged in a rugged steel tool box.
		A load lowering valve is available for hydraulic pumps to control the closing rate of the HS-10K.
	www.torqlite.com /other_products.html (403 words)

	WaterWorld - Flowserve Pump chief chosen to head Hydraulic Institute executive committee
		The Hydraulic Institute is the largest association of pump producers and suppliers in North America.
		The president of the Hydraulic Institute works with the Institute's staff and board to support its mission of serving the interests of member companies and pump users worldwide.
		"The Hydraulic Institute is the industry's primary forum for the exchange of pump industry information for management decision making, and an influential participant in the setting of domestic and international standards.
	ww.pennnet.com /Articles/Article_Display.cfm?ARTICLE_ID=254727&p=41 (535 words)

	Machinery Service & Design, a New Generation of Affordable Hydraulic Rebuilding Equipment
		is an association of companies successfully engaged in the sales and service of hydraulically, pneumatically or electrically operated tools, components, and equipment.
		The disassembly table is a safe and efficient place to disassemble, inspect and test hydraulic cylinders.
		The Nut Buster hydraulic torque wrench is used to remove piston nut and cylinder gland nuts.
	www.ms-d.com (398 words)

	Hydraulic Mill - Turner Mills (Site not responding. Last check: 2007-09-02)
		It features a box tube subframe, log bunks spaced every 24" apart, hydraulic back stops, log loaders, bull dog leveling jacks, power head lift, hydraulic controls, and a remote mounted off to the side of the machine as to not interfere with board handling.
		Also, the power head is driven by #40 roller chains from both sides.
		We locate the pump power plant at the opposite end of the track away from the operator.
	www.turnermills.com /Hydraulic.aspx (195 words)

	Top Head Rigs
		Mast: 55’ x 150,000# one piece hydraulically raised, with cable/hydraulic cylinder 140,000# pullback and 30,000# pulldown, 3” standpipe, 4-part hoisting line, crown block.
		GARDNER DENVER 1500 (Ref#5703) Top Head Drive, triple drum, mounted on Ford F8000 6x6 powered by Cat 3208 diesel, 42’ mast, 10” rotary table, 5 x 6 Gardner Denver duplex mud pump, hydrostatic top head raised by drawworks, 400’ of 4-1/2” x 20’ flush wall reverse drill pipe.
		Hydraulic pivoting capability up to 90º, air compressor, toolboxes, derrick with winch line, cathead.
	www.sunmachinery.com /TopHead.html (6471 words)

	Telecom Tools - T&B 15-Ton Hydraulic Crimping Head
		Description: The TandB 15-Ton Hydraulic Crimper has a long, slim profile allowing for easier access into tight spaces like cable tray and central office applications.
		This 15 ton hydraulic crimper with a non-self-contained hydraulic head can be used to install copper and aluminum lugs and splices up to 1000MCM, C taps, H taps and grid ground connectors.
		The TandB 15-ton head is for use with Burndy P-style dies only.
	www.tecratools.com /pages/telecom/39242.html (237 words)

	Double Head Drilling Systems
		Double head drilling systems based on duplex casing for combination of rotary head and hydraulic drifter.
		Suitable for grounds including hard rock, hard rock banks or gravel, requiring precise drilling (grouting, umbrella drilling or anchor).
		Double head drilling systems based on double casing for combination of rotary head / rotary head.
	www.sysbohr.com /pages_en/doppelkopf_en.html (126 words)

	Buy Evans BD22 Hydraulic Blue Bass Drum Head online at Musician's Friend (Site not responding. Last check: 2007-09-02)
		Transparent blue with no dampening ring, they make the set look more open, and dare I say it, inviting.These heads are really great.
		Make sure you the pillow is touching the batter head.
		don't tune the head too tight and you will get a Very full punchy sound when you mic it.
	www.musiciansfriend.com /product/Evans-BD22-Hydraulic-Blue-Bass-Drum-Head?sku=440292&src=3SOSWXXB (623 words)

	HP75SS-316 Stainless Steel MS75SS CL150SS with High Head Hydraulic Pump Training CD
		The HP75SS features the same low flow, high head hydraulic characteristics plus chemical resistance and optional seal flush.
		Combine the low flow/high head hydraulic characteristics of our MS (Multistage) series pumps with the inherent safety features & potential for the extended MTBF of a magnetically driven (seal not needed) pump.
		Flows to 300 gpm/ Heads to 150 ft
	www.pricepump.com /whatsnew.asp (279 words)

	NORTH STATE TC-1020 Twin-Head Hydraulic Hollow Chisel Mortiser
		NORTH STATE TC-1020 Twin-Head Hydraulic Hollow Chisel Mortiser
		Removable two head construction allows 2 mortises with one stroke, providing high efficiency mortises.
		Hydraulic drive gives the smoothest cut while in heavy mortise operation.
	www.leneavesupply.com /Machinery/NorthState/P04016.aspx (90 words)

	Vertical Hydraulic Head Surface Grinding Machine (via CobWeb/3.1 planetlab2.netlab.uky.edu) (Site not responding. Last check: 2007-09-02)
		Grind head speeds (double speed or single speed optional)
		Segmental Grind wheel 335 mm complete with six fitted grinding segments and tool.
		Hydraulic System complete with electro-pump and central unit.
	marthub.com.cob-web.org:8888 /CompanyProduct/search/100024/3/Vertical_Hydraulic_Head_Su... (85 words)

	HYDRAULIC CHUTES & ACCESSORIES
		MAKE YOUR HYDRAULIC CHUTE PORTABLE, GAS AND ELECTRIC POWER UNITS AVAILABLE
		CLICK HERE TO DOWNLOAD THE BROCHURE PAGE 1 FOR HYDRAULIC CHUTES
		CLICK HERE TO DOWNLOAD THE BROCHURE PAGE 2 FOR HYDRAULIC CHUTES
	www.wwmanufacturing.com /hydraulicchutesa.html (200 words)

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