US3341880A - Tank cleaning apparatus - Google Patents

Tank cleaning apparatus Download PDF

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Publication number
US3341880A
US3341880A US480608A US48060865A US3341880A US 3341880 A US3341880 A US 3341880A US 480608 A US480608 A US 480608A US 48060865 A US48060865 A US 48060865A US 3341880 A US3341880 A US 3341880A
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US
United States
Prior art keywords
pipe
tank
hose
standpipe
reel
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US480608A
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English (en)
Inventor
Einar T Young
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sunoco Inc
Original Assignee
Sun Oil Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to FR1489637D priority Critical patent/FR1489637A/fr
Application filed by Sun Oil Co filed Critical Sun Oil Co
Priority to US480608A priority patent/US3341880A/en
Priority to GB34398/66A priority patent/GB1103909A/en
Priority to DE19661557573 priority patent/DE1557573A1/de
Priority to BE685691D priority patent/BE685691A/xx
Priority to NL6611620A priority patent/NL6611620A/xx
Application granted granted Critical
Publication of US3341880A publication Critical patent/US3341880A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays

Definitions

  • ABSTRACT F 'EHE DHSCLGSURE For cleaning underground storage tanks, a vertical standpipe slotted at its lower end and carrying a springbiased pivotally-rnounted guiding member which can extend outwardly through said slot, is pushed downwardly through the tank until its lower end, and also the outer end of the guiding member, engage the tank bottom.
  • a flexible hose to the outer surface of which is adhesively secured a spring steel stiifening tape, is pushed down through the standpipe, its lower end being guided by the guiding member outwardly through the slot and along the tank bottom. The upper end of the hose is connected to a suction pump.
  • the present invention relates to tank cleaning apparatus, and more particularly to means for removing from liquid storage tanks (such, for example, as underground storage tanks used for fuel oil, gasoline, etc.) the scale, sludge, sediment, rust, or other solid material which collects or is deposited therein during use, as well as the water and other extraneous liquids which may accumulate at the bottom of such tanks.
  • liquid storage tanks such as underground storage tanks used for fuel oil, gasoline, etc.
  • the scale, sludge, sediment, rust, or other solid material which collects or is deposited therein during use, as well as the water and other extraneous liquids which may accumulate at the bottom of such tanks.
  • An object of this invention is to provide a new and improved apparatus for rapidly and effectively cleaning fuel oil or gasoline tanks or tanks for containing other liquids, particularly that type of tank wherein only Ia small opening (to wit, the opening ordinarily used for gauging the tank) is available for the insertion of cleaning tools.
  • Another object is to provide a novel tank cleaning apparatus which can be readily inserted through the relatively small opening normally employed for gauging underground gasoline tanks or the like, and which can be readily manipulated to effectively remove scale, rust, sediment, sludge, or water from the bottom of the tank.
  • a further object is to provide a novel easily transportable apparatus for cleaning underground storage tanks, such as the gasoline storage tanks installed at service stations.
  • the apparatus of this invention includes a standpipe which pivotally carries, near its lower end, a springbiased hose-guiding channel.
  • the standpipe is lowered down through the gauge tube of the tank to be cleaned, until it contacts the bottom wall of the tank; the channel, under the urging of its spring, swings outwardly as the pipe is being lowered and its free end comes to rest on the tank bottom such that this channel makes an angle of about 60 with the axis of the pipe.
  • the apparatus also includes a reel carrying a hose assembly which is flexible but which has substantial stiffness in the direction of its length, and a suction pump coupled to the inner or reel end of the hose assembly.
  • the outer or free end of the hose carries a nozzle.
  • This reel is fastened to the upper end of the standpipe after the latter is in position in the tank, and the hose assembly, nozzle end first, is fed downwardly through the standpipe.
  • the nozzle contacts the hose guiding member or channel, and is caused by this channel to turn and move horizontally along the bottom wall of the tank.
  • the suction pump is started and, as the lower section of the hose is fed outwardly along the bottom of ice the tank, the foreign material (water, sediment, etc.) is drawn up out of the tank through the nozzle and hose to the surface.
  • FIG. 1 is a view Ipartly in section illustrating a portion of an underground tank with which the tank cleaning apparatus of this invention is adapted to be used, showing the tank cleaning apparatus in position for cleaning the tank;
  • FIG. 2 is a transverse cross-section of a hose assembly, taken on line 2 2 of FIG. l;
  • FIG. 3 is a view, partly broken away and on an enlarged scale, of the free end of the hose assembly, showing a nozzle attached thereto;
  • FIG. 4 is a top view of the apparatus of FIG. l, showing the reel in position at the top of the standpipe;
  • FIG. 5 is a horizontal cross-section taken on line 5-S of FIG. 1.
  • Sludge, sediment, and other refuse (extraneous or foreign) materials accumulate on the bottom and side walls of tanks used for containing fuel oil, gasoline, or other liquid materials.
  • This sludge and sediment collects or is deposited, in particular, on the bottom and side walls of gasoline tanks and the invention will be described in this connection, although it will be understood that the apparatus has other uses.
  • the sludge consists of scale and rust which form on the inside of the tank and tend to gradually drop to the bottom of the tank.
  • sediment accumulates from the gasoline.
  • condensation occurs on the inside of the tank; the resulting water accumulates and, of course, settles at the lowest point in the tank, since its specific gravity is higher than that of the gasoline.
  • the sludge or sediment produced by this mixture of materials is extremely ditiicult to remove from the tank bottom and walls, particularly in the case of a tank for the storage of gasoline.
  • the sludge or sediment, as well ⁇ as the water, should be removed from a gasoline tank, as they are likely to be drawn through the suction line toward or to the customers gasoline tank, with the result that his fuel line strainer, or his fuel line, are likely to become clogged, or contaminated with water.
  • the apparatus of this invention has been developed for the purpose of removing such sludge, sediment, water, or other waste materials accumulating in fuel oil, gasoline, or other liquid storage tanks, particularly of the underground type.
  • the numeral 1 indicates the bottom wall of an underground gasoline storage tank. While the invention is shown, in this particular view, as applied to an underground tank, it will be appreciated that this is merely for purposes of illustration, and that the apparatus shown may be used with tanks otherwise located.
  • the tank may be of any desired size or shape, although usually gasoline storage tanks are cylindrically shaped.
  • the apparatus by way of illustration, will be described, insofar as its operation is concerned, in connection with the cleaning of tanks having a bottom with upwardly curving side walls, since this is the most usual type encountered.
  • the gauge tube 3 for the tank projects upwardly from the tank substantially to ground level, and is normally covered by a cap (not shown).
  • the upper end of tube 3 is secured firmly in the earth, as by means of asphalt or concrete formed in situ around the tube.
  • the apparatus for removing the sludge, sediment, water, or other waste (extraneous) material from the tank comprises, in general, a exible member or hose assembly 4, a s-tandpipe 5 adapted to be positioned within tube 3, and a nozzle 6 connected to the hose.
  • the nozzle and the exible member or hose are adapted to be guided over the bottom 1 and portions of the side walls of the tank by the standpipe 5, as will be described, and when in use, the hose assembly 4 is positioned within the major portion of the length of standpipe 5.
  • the ilexible member or hose assembly 4 (FIG. 2) comprises a flexible hose 7 of the elastomeric material known as neoprene, 1/2 inch in LD. and some fifty feet in length, having a curved spring steel tape 8 (whose length is comparable to but somewhat less than that of the hose) cemented (as indicated ⁇ at 9) to the hose, by means of a suitable adhesive such as an epoxy or polysuliide resin. Due to this construction, the hose assembly is flexible, yet has substantial stiffness in the direction of its length. That is to say, the tape 8 holds the hose 7 substantially rigid in one direction or in one plane, while permitting it to flex substantially freely in that plane.
  • a suitable adhesive such as an epoxy or polysuliide resin
  • a nozzle 6 is secured to one end of the hose assembly 4, by means of a pair of screws 10 (FIG. 3) which pass through openings in the tape 8 and thread into suitable tapped holes provided in the body of the nozzle 6.
  • Nozzle 6 has therein a bore 11 of the same diameter as the LD. of the hose 7. Beginning at the end of the nozzle which is adjacent hose 7, the major portion of the length of bore 11 is aligned with the hose opening; near its opposite end, the nozzle bore includes a portion 11a which extends downwardly at an angle of 30 to the remainder of the bore, toward the longitudinal center line (extended) of tape 8.
  • the hose assembly 4 is mounted on a reel 12 which will be referred to further hereinafter.
  • the end of hose 7 opposite to nozzle 6 has thereon a hose coupling 13 (FIG. 4) which threadedly engages a pipe fitting 14 mounted in the stern of a T 15 positioned at the center of reel 12.
  • the aligned arms of the T 15 are concentric with the axis about which the reel 12 is adapted to rotate, and the stern of the T rotates about these aligned arms when the reel is rotated in the manner described hereinafter.
  • a pipe 16 is mounted in one of the two aligned arms of the T 15, and this pipe extends through a side plate 17 of the reel 12 and is coupled into one side of a rotary pipe joint or swing joint 18.
  • Pipe 16 rotates with the reel 12, and communicates (through T 15 and items 14 and 13) with the reel or surface end of hose 7.
  • a solid shaft 19 is mounted in the other one of the aligned arms of the T 15.
  • the swing joint 18 allows rotation of pipe 16 (when reel 12 is rotated) with respect to a stationary or xed pipe 20 one end of which is coupled into the other side ofthe rotary joint 18, while maintaining fluid communication between pipes 20 and 16.
  • the other end of pipe 20 is threaded into one end of a transparent sight tube 21 the other end of which is coupled, by means of a pipe coupling 22, to a pipe 23 which extends to the intake of a suitable suction pump (not shown).
  • a keeper spring 24 for example an ordinary screen door spring, is utilized to keep the hose from becoming unwound from the reel.
  • One end of spring 24 is attached to rotary joint 18 (which is located outside the main body of the reel) by means of a ring 25, this spring passing over the outer turns of hose on the reel and the other end of the spring being fastened to one of the side braces of the reel, at the opposite side from the joint 18, by means of a hook 26.
  • the standpipe 5 is about twelve feet long, and this standpipe is designed to be passed down through the gauge tube 3 and through the interior of the tank to be cleaned, until the lower end of the standpipe comes to rest on the tank bottom 1, as illustrated in FIG. 1.
  • the standpipe which will be described in more detail hereinafter, is part of the tank cleaning apparatus of the invention, and is transported on the truck, along with the 4reel 12 containing the hose assembly, and the suction pump.
  • underground gasoline storage tanks at service stations are so located that the top 47 of the tank is about three feet below ground level 2, which means that the tank gauge tube 3 is about three feet long; as previously mentioned, both ends of the gauge tube 3 are firmly anchored in position.
  • the vertically-extending standpipe can serve as a suitably rigid support or mounting means for the reel 12 of hose.
  • the upper end of standpipe 5 extends a suitable distance above ground level 2 when the standpipe is in operative position.
  • a centrallyapertured pipe block 27 (whose central aperture is slightly larger in diameter than the O D. of standpipe 5), which is split or slitted at one side along a diameter of the aperture, is positioned around the upper end of standpipe 5, and is then tightened in this position by means of a bolt 28 which passes entirely through the block 27 from one side to the other thereof, this bolt passing transversely through the gap in the block and carrying at one end a threaded operating handle 29 by means of which the aforesaid tightening is effected.
  • a predetermined orientation azim-uthal relation) between the block 27 and the standpipe 5 is effected by means of a pin 3i) (which is xedly secured to block 27 and which extends along a diameter of the aperture in this block) which enters a narrow upwardlyopening sl-ot 31 cut through the upper end of standpipe 5, at one side thereof.
  • a pair of Outrigger arms 32 which extend at right angles to the axis of the standpipe, are positioned at respective opposite sides of block 27. Arms 32 are bolted at one end (as at 28 and 33) to opposite sides of block 27 and are bolted at their opposite ends to the lower ends of respective uprights 34 (FIG. 1) which extend at right angles to the outriggers 32.
  • Pipe 16 passes with a loose tit through an aperture provided near the upper end of one upright, and shaft 19 passes with a loose iit through an aperture provided near the end of the other upright.
  • Fastening means 35 (including a nut which engages threads provided on the outer end of shaft 19) holds the upper ends of the uprights 34 in position at one side of the reel, and the swing joint 18 does the same at the other side of the reel. In this manner, the stationary uprights 34 support the reel 12 and journal the same for rotation about the axis provided by shaft 19 and pipe 16.
  • a pair of fixed angularly-extending braces 36 are provided, one at each side of the reel. One end of each brace 36 is bolted at 33 to the block 27, and the other end. of
  • each brace is bolted to its corresponding upright 34, intermediate the ends of the upright.
  • the pipe coupling 22 is secured to one of the Outrigger arms 32 by means of a block 37 whose base is bolted to the Outrigger arm 32 at the rotary joint side of the reel. Coupling 22 passes through an aperture provided near the outer end of block 37, and a set screw 38 is threaded through block 37 yat this aperture and bears against coupling 22.
  • a substantially rectangular slot 39 is cut through one side of standpipe 5 at the lower end thereof, this slot opening at the lower end of the pipe and being rounded at its upper or closed end.
  • An elongated channel-shaped or U-shaped hose guiding member 40 is pivotally mounted inside standpipe 5, in such a position as to be capable of moving inwardly and outwardly through slot 39.
  • This pivotal mounting is effected by means of a pair of dia-v metrically-opposite pivot screws 41 (FIG. 5) whose heads are rotatably mounted in respective diametrically-opposite holes in standpipe 5 and whose Shanks thread tightly into respective tapped holes provided in the opposite side walls of member 40, near the inner end of this member.
  • the side walls of this member extend somewhat beyond the base or bottom wall of the U.
  • a pair of internal grooves 42 are provided in the wall of standpipe 5 opposite slot 39, these grooves being aligned respectively with the side walls of slot 39.
  • the pivotal mounting of member 40 in standpipe 5 allows this member to be rotated (the member then movin in the inward direction through slot 39, toward a position wherein its length extends more or less parallel to the axis of pipe 5) a suicient amount to allow pipe 5 to be pushed downwardly through pipe 3.
  • the side walls of this member extend beyond the base or bottom wall thereof to provide a shoe portion 49a at the outer end of the member, the edges of these side walls extending upwardly and outwardly at an angle of about 30 from the plane of the base of the U. This causes the upper faces of the side walls of this member to project some distance beyond the termination or end of the bottom wall of the U. This is shown in FIG. l, and the reason for it will become apparent hereinafter.
  • Means are provided for resiliently biasing the hose guiding member 40 to swing outwardly about its pivots 41, away from the axis of pipe 5.
  • This means comprises a thin member 43 made of spring steel and formed into an arcuate shape at one end.
  • the flat upper end of the pivot spring member 43 is fastened to the inner wall of pipe 5 by means of a pair of vertically-spaced rivets 44 which are located slightly above the pivot screws 41, a semielliptical ller member 45 being interposed between the spring 43 and the inner cylindrical wall of pipe S, to provide a planar mounting surface for the planar surface of the spring.
  • the width of the flat or leaf spring 43 is slightly less than that of the bottom wall of the U member 40, and the outer surface of this spring bears against the bottom wall of member 40.
  • spring 43 acts to resiliently bias member 4I) away from the axis of pipe 5 and outwardly through slot 39.
  • the cap is first removed from the upper end of the gauge tube 3 of the tank to be cleaned. Then, the standpipe 5 is brought up to the gauge tube, with the guiding member 40 end of the pipe lowermost. The guiding member 40 is then swung inwardly (i.e., toward the axis of pipe 5), about its pivots and against the bias of spring 43, to a degree suicient to allow the lower end of pipe 5 to be inserted into tube 3. The slot 39 in pipe 5 allows the member 40 to swing inwardly in this manner. After this has been done, the standpipe 5 is inserted into tube 3, with the slotted end 31 of pipe 5 uppermost, and is pushed down vertically through tube 3, and on through the interior of the tank, until the lower end of standpipe 5 contacts the tank bottom 1.
  • the loaded reel 12 is brought up to the standpipe 5 (whose upper end extends above ground level 2, as previously stated), and is secured to the upper end of pipe 5 by tightening the handle 29. Then, the keeper spring hook 26 is released and the nozzle or free end of the hose assembly 4 is inserted into the upper end of standpipe S, and the hose assembly is pushed downwardly through pipe 5. This can readily be done since the hose assembly 4 has a substantial degree of stiffness in the direction of its length. Of course, the reel 12 rotates about its substantially horizontal axis to unwind the hose assembly therefrom as the latter moves downwardly through pipe 5.
  • the suction pump When the nozzle has reached the guiding member 40, the suction pump is connected to conduit 23 at the surface and is started up (if this has not already been done). Then, the hose assembly 4 i-s pushed further downwardly to cause nozzle 6 to move outwardly fro-m pipe 5 and horizontally along the tank bottom 1. Sludge, sediment, water, etc., are then drawn up by the pump from the bottom of the tank as the nozzle moves in a substantially straight line horizontally along the bottom of the tank, away from pipe 5. The operator, -by watching sight tube 21, may determine when the cleaning process has been completed, Then, the hose is reeled in until the nozzle 6 is within the contines of pipe 5.
  • the reel 12 is rotated slightly in azimuth (i.e., it is rotated bodily in a horizontal plane) to cause the pipe 5 and the hose guiding member 40 to rotate to a slightly different angular position relative to the tank bottom 1, so that another cleaning swipe may be effected as the hose is again pushed downwardly and is guided by member 40 to follow a slightly different straight-line path along the tank bottom 1.
  • the hose assembly 4 is reeled in and the reel is uncoupled from pipe S. After the hose reel has been removed from pipe 5, the latter is drawn upwardly, out of gauge tube 3.
  • the pivotal mounting of guiding member 4t) in pipe 5 enables this member to swing into pipe 5 sufficiently to permit the pipe to be readily withdrawn from tube 3.
  • a substantially rigid standpipe adapted to be lowered through said opening into contact with the bottom of the tank, an elongated hose guiding member having one end thereof pivotally connected to said pipe within the same at a location near the lower end thereof, said guiding member being constructed and arranged to swing outwardly with respect to said pipe beyond the contines thereof and to extend downwardly from its pivot at an arcuate angle to the axis of said pipe when the free end of said member and the lower end of said pipe are in contact with the tank bottom; and means for resiliently biasing said member to swing outwardly about its pivot, away from said pipe.
  • a substantially rigid standpipe adapted to be lowered through said opening into contact with the bottom of the tank, said pipe having in its wall an elongated slot opening into the lower end of the pipe; and an elongated hose guiding member having one end thereof pivotally connected to said pipe within the same at a location spaced from the lower end thereof, said guiding member being constructed and arranged to swing outwardly through said slot beyond the confines of said pipe and to extend downwardly from its pivot at an angle not in excess of approximately 60 to the axis of said pipe when the free end of said member and the lower end of said pipe are in contact with the tank bottom, whereby an elongated hose, which is flexible yet which possesses substantial stffness in the direction of its length, may be passed down through said standpipe to be guided by said member to a position wherein it extends along the tank bottom.
  • means for guiding said hose substan tially vertically downwardly through said opening and toward the bottom of the tank, and thence laterally along the bottom thereof, comprising a substantially rigid standpipe adapted to be lowered through said opening into contact with the tank bottom, an elongated hose guiding member having one end thereof pivotally connected to said pipe within the same at a location near the lower end thereof, said guiding member being constructed and arranged to swing outwardly with respect to said pipe beyond the confines thereof and to extend downwardly from its pivot at an acute angle to the axis of said pipe when the free end of said member and the lower end of said -pipe are in contact with the tank bottom; and means for rcsiliently biasing said member to swing outwardly about its pivot, away from said pipe.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
US480608A 1965-08-18 1965-08-18 Tank cleaning apparatus Expired - Lifetime US3341880A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR1489637D FR1489637A (US07608600-20091027-C00054.png) 1965-08-18
US480608A US3341880A (en) 1965-08-18 1965-08-18 Tank cleaning apparatus
GB34398/66A GB1103909A (en) 1965-08-18 1966-08-01 Tank cleaning apparatus
DE19661557573 DE1557573A1 (de) 1965-08-18 1966-08-18 Tankreinigungsvorrichtung
BE685691D BE685691A (US07608600-20091027-C00054.png) 1965-08-18 1966-08-18
NL6611620A NL6611620A (US07608600-20091027-C00054.png) 1965-08-18 1966-08-18

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US480608A US3341880A (en) 1965-08-18 1965-08-18 Tank cleaning apparatus

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US3341880A true US3341880A (en) 1967-09-19

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Application Number Title Priority Date Filing Date
US480608A Expired - Lifetime US3341880A (en) 1965-08-18 1965-08-18 Tank cleaning apparatus

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US (1) US3341880A (US07608600-20091027-C00054.png)
BE (1) BE685691A (US07608600-20091027-C00054.png)
DE (1) DE1557573A1 (US07608600-20091027-C00054.png)
FR (1) FR1489637A (US07608600-20091027-C00054.png)
GB (1) GB1103909A (US07608600-20091027-C00054.png)
NL (1) NL6611620A (US07608600-20091027-C00054.png)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954499A (en) * 1974-04-25 1976-05-04 Max Hankin Method and apparatus for removing dew from a green
US4117564A (en) * 1977-09-06 1978-10-03 Alberto Russo Oil tank cleaning apparatus
US4228553A (en) * 1978-11-06 1980-10-21 Genuit Luther L Storage and dispensing apparatus for swimming pool vacuum hose
EP0032813A1 (en) * 1980-01-19 1981-07-29 Emultec Limited Recovery of heavy hydrocarbons from oil sludge
US4721127A (en) * 1986-08-15 1988-01-26 Conlin Carter B Method and apparatus for underground tank cleaning
US4770711A (en) * 1984-08-24 1988-09-13 Petroleum Fermentations N.V. Method for cleaning chemical sludge deposits of oil storage tanks
US5065781A (en) * 1990-03-22 1991-11-19 Cox Ernest J Storage tank cleanout apparatus
US5333639A (en) * 1992-12-04 1994-08-02 Nelson Monte G Illuminated siphon
US9468957B1 (en) 2016-02-01 2016-10-18 King Saud University Storage tank cleaning machine
CN106694410A (zh) * 2016-11-16 2017-05-24 广东技术师范学院 一种计算机光驱定期保养装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3645452A (en) * 1970-04-27 1972-02-29 Goodrich Co B F Tank cleaner

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1660999A (en) * 1926-10-04 1928-02-28 James A Macdonell Well-drilling apparatus
US2332940A (en) * 1940-05-06 1943-10-26 Charles E Senke Tank cleaning apparatus
US2358470A (en) * 1939-11-17 1944-09-19 Houston Oil Field Mat Co Inc Sampling device
CA656111A (en) * 1963-01-15 Tecalemit Limited Formed pipe assemblies
US3183940A (en) * 1962-08-17 1965-05-18 Jesse J Worten Fluid handling apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA656111A (en) * 1963-01-15 Tecalemit Limited Formed pipe assemblies
US1660999A (en) * 1926-10-04 1928-02-28 James A Macdonell Well-drilling apparatus
US2358470A (en) * 1939-11-17 1944-09-19 Houston Oil Field Mat Co Inc Sampling device
US2332940A (en) * 1940-05-06 1943-10-26 Charles E Senke Tank cleaning apparatus
US3183940A (en) * 1962-08-17 1965-05-18 Jesse J Worten Fluid handling apparatus

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3954499A (en) * 1974-04-25 1976-05-04 Max Hankin Method and apparatus for removing dew from a green
US4117564A (en) * 1977-09-06 1978-10-03 Alberto Russo Oil tank cleaning apparatus
US4228553A (en) * 1978-11-06 1980-10-21 Genuit Luther L Storage and dispensing apparatus for swimming pool vacuum hose
EP0032813A1 (en) * 1980-01-19 1981-07-29 Emultec Limited Recovery of heavy hydrocarbons from oil sludge
EP0032813B1 (en) * 1980-01-19 1984-04-11 Emultec Limited Recovery of heavy hydrocarbons from oil sludge
US4770711A (en) * 1984-08-24 1988-09-13 Petroleum Fermentations N.V. Method for cleaning chemical sludge deposits of oil storage tanks
US4721127A (en) * 1986-08-15 1988-01-26 Conlin Carter B Method and apparatus for underground tank cleaning
US5065781A (en) * 1990-03-22 1991-11-19 Cox Ernest J Storage tank cleanout apparatus
US5333639A (en) * 1992-12-04 1994-08-02 Nelson Monte G Illuminated siphon
US9468957B1 (en) 2016-02-01 2016-10-18 King Saud University Storage tank cleaning machine
CN106694410A (zh) * 2016-11-16 2017-05-24 广东技术师范学院 一种计算机光驱定期保养装置

Also Published As

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NL6611620A (US07608600-20091027-C00054.png) 1967-02-20
DE1557573A1 (de) 1970-04-02
BE685691A (US07608600-20091027-C00054.png) 1967-02-20
GB1103909A (en) 1968-02-21
FR1489637A (US07608600-20091027-C00054.png) 1967-11-13

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