US3893262A - Particulate transfer control device - Google Patents

Particulate transfer control device Download PDF

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Publication number
US3893262A
US3893262A US470227A US47022774A US3893262A US 3893262 A US3893262 A US 3893262A US 470227 A US470227 A US 470227A US 47022774 A US47022774 A US 47022774A US 3893262 A US3893262 A US 3893262A
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US
United States
Prior art keywords
way
flow
particulate
closure
control fluid
Prior art date
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
US470227A
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English (en)
Inventor
James A Giese
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.)
Fruehauf Corp
Original Assignee
Fruehauf Corp
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
Application filed by Fruehauf Corp filed Critical Fruehauf Corp
Priority to US470227A priority Critical patent/US3893262A/en
Priority to CA218,894A priority patent/CA1015006A/en
Priority to GB15935/75A priority patent/GB1499594A/en
Priority to ZA00752546A priority patent/ZA752546B/xx
Priority to JP50049200A priority patent/JPS5820756B2/ja
Priority to BE156290A priority patent/BE829003A/xx
Priority to NL7505613A priority patent/NL7505613A/xx
Priority to DK212175A priority patent/DK212175A/da
Priority to BR3797/75A priority patent/BR7502977A/pt
Priority to NO751714A priority patent/NO751714L/no
Priority to SE7505528A priority patent/SE7505528L/xx
Priority to ES437701A priority patent/ES437701A1/es
Priority to DE2521670A priority patent/DE2521670C2/de
Priority to FR7515265A priority patent/FR2271149A1/fr
Application granted granted Critical
Publication of US3893262A publication Critical patent/US3893262A/en
Assigned to FRUEHAUF CORPORATION reassignment FRUEHAUF CORPORATION MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE DECEMBER 23, 1986 DECEMBER 12, 1986, FEBRUARY 27, 1987 (DELAWARE) Assignors: FRUEHAUF CORPORATION, A MI CORP., FRUEHAUF HOLDINGS, INC., A CORP. OF DE, LMC ACQUISITION CORPORAITON, LMC ACQUISITION CORPORATION, A MI CORP.
Anticipated expiration legal-status Critical
Assigned to IBJ SCHRODER BANK & TRUST COMPANY reassignment IBJ SCHRODER BANK & TRUST COMPANY SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FRUEHAUF TRAILER CORPORATION
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0046—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier
    • B24C7/0069—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a gaseous carrier with means for preventing clogging of the equipment or for preventing abrasive entering the airway

Definitions

  • ABSTRACT App The invention pertains to control means for apparatus for pneumatic transfer of a particulate material of the [52] U.S. Cl 51/12; 51/12 t pe having an air flow-way intersected by a particu- [51] Int. Cl. 824C 7/00 late flow-way.
  • the control means includes respective [58] Field of Search 51/8 R, 12 closure means for the air flow-way and particulate flow-way and a fluid-actuated sequencing mechanism [56] References Cited for sequentially operating the closure means. When UNITED STATES PATENTS both closure means are open.
  • Mead 51 12 may be operamd by a Single Comm cause 3O7OI924 [/1963 Hastrui) I I I I I M 51/12 X closing of the particulate flow-way first, followed by 3,089.285 5/1963 Moore 51 12 x closing of the air y- 3,l39,705 7/1964 Histed 51/12 X 3.201.901 8/1965 Pauli 51/12 7 Clam, 5 Drawmg F'gures 1 PARTICULATE TRANSFER CONTROL DEVICE BACKGROUND OF THE INVENTION 1.
  • the invention pertains to apparatus for pneumatic transfer of particulate materials and in particular to abrasive blasting apparatus.
  • Such apparatus is commonly called sand blasting apparatus because sand is one of the most popular abrasives used.
  • Such equipment generally comprises a heavy duty hose and nozzle.
  • the hose is connected to the outlet of an air directing member having an air flow-way therethrough. Compressed air is supplied to the air flow-way and flows through the flow-way, hose, and nozzle at a rapid rate and under high pressure.
  • the apparatus also includes an abrasive container adjoining a particulate directing member which has a particulate flow-way therethrough communicating with the air flow-way. Sand or other particulate abrasive is deposited in the air flow-way through the particulate flow-way in the path of the compressed air.
  • the air thus picks up the sand and carries it along the hose and out through the nozzle on the end of the hose with a considerable velocity.
  • the operator uses the nozzle to direct the sand against a target.
  • the air flow-way and particulate flow-way usually form a generally T-shaped flow-way system.
  • the present invention offers a new solution to this problem which is simpler and more convenient, and solves the problem in a more complete and satisfactory manner.
  • the control means of the invention includes respective closure means for the air flow-way and the particulate flow-way.
  • a sequencing mechanism having control fluid passageways therein is operatively connected to the closure means.
  • a single switch or the like is provided for selectively causing a control fluid to flow in a desired flow pattern in the control fluid passageways.
  • the invention provides for the selection of a first flow pattern to be used when the closure means are both open and it is desired to close them so as to shut down the equipment.
  • the sequencing mechanism operates to cause the closing of the particulate flow-way first, followed by closing of the air flow-way, by their respective closure means. It is therefore an object of the invention to provide for closing of the particulate flow-way first, followed by closing of the air flow-way, upon shutdown.
  • the invention provides for selection of a second flow pattern to be used when both closure means are closed and it is desired to open them to start up the equipment.
  • the sequencing mechanism causes opening of the air flow-way first followed by opening of the particulate flow-way. Therefore another object of the invention is to provide for opening of the air flow-way first followed by opening of the particulate flow-way upon start-up of the apparatus.
  • Yet another object of the invention is to provide control means by which both the air flow-way and the particulate flow-way can be opened or closed in a desired sequence by operation of a single switch or the like.
  • the sequencing mechanism is devised, by virtue of the relative sizes of the passageways therin, so as to control the relative speed with which the two closure means are opened and closed.
  • the closing of the air flow-way proceeds at a slower rate than that of the particulate flow-way
  • the opening of the particulate flow-way proceeds at a slower rate than that of the air flow-way.
  • Each of the closure means preferably comprises a movable operator such as a diaphragm or piston operative to open the flow-way in response to greater pressure on one side thereof and to close the flow-way in response to greater pressure on the other side.
  • a movable operator such as a diaphragm or piston operative to open the flow-way in response to greater pressure on one side thereof and to close the flow-way in response to greater pressure on the other side.
  • Appropriate ones of the control fluid passageways in the sequencing mechanism are directly connected to areas on appropriate sides of the movable operators so that the control fluid can enter and leave these areas to operate the closure means.
  • the control fluid of the sequencing mechanism operates movable operators which in turn cause opening and closing of the flow-away.
  • FIG. 1 is a top plan view of a pneumatic particulate transfer apparatus incorporating the control means of the invention.
  • FIG. 2 is a view partly in section and partly in elevation taken along the lines 2-2 of FIG. I.
  • FIG. 3 is a sectional view of the sequencing mechanism taken along the lines 33 of FIG. 1.
  • FIG. 4 is a detailed sectional view of a portion of the particulate flow-way closure means in closed position.
  • FIG. 5 is a diagramatic illustration of the apparatus of FIGS. 1-3 as used with sand blasting equipment.
  • the apparatus 10 has an air directing portion, comprising fittings 30 and 40, and having air flow-way 12 extending therethrough.
  • a particulate flow-way 14 extends through a particulate directing portion comprising slider member 54, resilient annulus 46, and fitting 40, and intersects the air flowway 12 at a right angle.
  • a source of compressed air 16 is connected to the inlet [8 of the air flow-way 12 by means of a hose 20.
  • Another hose 22 is connected to the outlet 24 of the air flow-way 12.
  • a nozzle 26 is provided on the other end of hose 22. In use the operator uses this nozzle 26 to direct the blasting sand onto a target.
  • the air flow-way 12 extends in a generally horizontal direction from its inlet 18 in fitting 30 to a first vertically directed section 28.
  • a diaphragm housing comprising upper and lower members 32 and 34 respectively, is connected to the fitting 30 so that a bore 36 in the lower member 34 registers with the vertically directed section 28 of the air flow-way 12.
  • the bore 36, the diaphragm area 38 defined by the diaphragm housing, and bores 39 in the lower housing member 34 define a continuation of the air flow-way, bores 39 registering with a second vertically directed section 40 of the air flow-way 12 in the fitting 30.
  • the remainder of the air flow-way is substantially horizontal, extending through the fitting 30 and the adjoining pipe-like fitting 40 to the outlet 24 in the fitting 40.
  • a diaphragm 42 clamped between the upper and lower diaphragm housing members 32 and 34 is operative, responsive to the distribution of pressure in the areas adjacent its upper and lower sides to open and close the air flow-way l2 upstream of the particulate flow-way 14 by opening and closing the bore 36.
  • the diaphragm 42 is biased downwardly by a compression spring 44 in the upper housing member 32 so that if the pressure in area 38 above the diaphragm is greater than or equal to the pressure in bore 36, the air flow-way 12 is closed. If the pressure in bore 36 exceeds that in area 38, the diaphragm will move upwardly opening the air flow-way as shown in FIG. 2.
  • the particulate flow-way 14 has three sections. The first of these, bore 48, passes through the fitting 40 to intersect the air flow-way 12.
  • the second section 50 of the particulate passageway passes through an annulus 46 of resilient material held in an annular ridge 52 extending from the outer part of fitting 40 concentric with bore 48.
  • the third section 60 of the particulate passageway extends through slider member 54 which has an annular end 56 which abuts one axial edge of the resilient annulus 46.
  • the other edge of annulus 46 rests on the portion 58 of the outer surface of the fitting 40 which lies between the bore 48 and the ridge 52.
  • the annular end 56 of the slider member 54 is of sufficiently small outer diameter to fit within the ridge 52 when the end 56 bears down against the resilient annulus 46.
  • Annulus 46 is bevelled as 45 and 47 to prevent end 56 and ridge 52 from cutting into the elastomer.
  • the slider member 54 has a piston 60 extending radially therefrom which serves as a particulate flow-way closure operator.
  • An open-ended casing 62 surrounds the piston 60 and a portion of the remainder of slider member 54 to form a snug slideway for the piston 60 and the adjacent portion of the slider member 54.
  • the inner surface of the casing 62 is sealed against the portion 70 of the slider member 54 by seals 72, 74, 76 to provide a closed area 66 on one side of the piston 60.
  • the casing 62 is connected to the fitting 40 by studs 64. When pressure is applied to the area 66 above the piston in excess of the pressure, usually atmospheric, below the piston, the slider member 54 is moved downwardly.
  • the end 56 bears against the resilient annulus 46 axially compressing it and forcing the resilient material to flow radially inwardly closing the section 50 of the particulate passageway through the resilient annulus 46 as shown in FIG. 4.
  • An annular recess 68 is provided in the lower side of piston 60 to receive the ridge 52 when piston 60 moves down. When the area 66 is vented, the resilient material tends to resume its normal shape forcing the slider member 54 upwardly and allowing opening of the particulate passageway.
  • the control means of the present invention also comprises a sequencing mechanism having a network of control fluid passageways therein.
  • the sequencing mechanism operates by means of a control fluid, preferably air from source 16, flowing through the control fluid passageways in given patterns.
  • the sequencing mechanism includes an upstanding part 78 of the upper member 32 of the diaphragm housing, a line 80 by which the sequencing mechanism can be connected to a source of control fluid, a valve 82 in the line 80, and a line 84 which actually serves as an extension of one of the passageways in part 78 by which it is connected to the closed area 66 above piston 60.
  • the upstanding part 78 has a main control fluid passageway therein comprising bores 86 and 88 and small branch bore 98.
  • Bore 86 is formed by boring through portion 78 and then plugging the ends of the bore.
  • Bore 88 extends inwardly from the top of portion 78 to intersect bore 86 and the opening of bore 88 serves as an inlet for the main control fluid passageway.
  • Line 80 is connected to the opening of bore 88.
  • An air closure passageway 90 connects the main control fluid passageway with the area 38 above the diaphragm.
  • a one way valve 92 in the air closure passageway 90 allows control fluid to flow therethrough from area 38 to the main control fluid passageway but not in the opposite direction.
  • a bleed hole 94 of substantially smaller diameter than the air closure passageway 90 also connects the main control fluid passageway with area 38.
  • a particulate closure passageway comprising bore and line 84 connects the main control fluid passageway to the area 66 above the piston 60.
  • One way valve 96 is disposed in the particulate closure passageway so as to allow control fluid to flow therethrough from area 66 to the main control fluid passageway but not in the opposite direction.
  • a bleed hole 102 of substantially smaller diameter than the particulate closure passageway connects the main control fluid passageway to bore 100 of the particulate closure passageway and thus to the area 66.
  • a two way valve 82 is disposed at a convenient location in line 80 between part 78 and the source of control fluid.
  • Valve 82 comprises a hollow valve body 106 with a valve element 104 is disposed therein and rotatable in the valve body 106 by means of a handle 114.
  • Valve body 106 has three spaced apart radial bores 108, 110, and 116 therein. The bores 110 and 116 are connected by suitable connections to the respective upstream and downstream parts of line 80. Bore 108 is open to atmosphere.
  • the valve element 104 has a bent passageway 112 therethrough. in the position shown in solid lines in FIG.
  • valve element 104 is turned so that the ends of passageway 112 are aligned respectively with bores 108 and 116 while bore 110 is blocked by the solid portion of the valve element 104.
  • the valve element 104 can be rotated to place passageway 112 in the position shown in dotted lines in FIG. 2 so that the ends of passageway 112 are respectively aligned with bores 116 and 110.
  • both the air flow-way and the particulate flow-way are opened by their closure means.
  • the valve element 104 In order to close the closure means and thus shut down the apparatus the valve element 104 would be turned to the position shown in dotted lines in FIG. 2 opening line 80. Pressurized control fluid would then flow through the control fluid passageways in its first flow pattern. Thus it would first flow into the main control fluid passageway 88, 86. The control fluid would flow freely through particulate closure passageway 98, l00, 84 past one-way valve 96 and into the area 66 above the piston 60. Piston 60 would move down closing the particulate flow-way relatively quickly. Meanwhile, the flow of control fluid into the air closure passageway 90 would be blocked by the one-way valve 92.
  • the control fluid would slowly bleed into the area 38 above the diaphragm bleed hole 94. Area 38 would gradually become pressurized, slowly pushing the diaphragm down to close the air flow-way after closing of the particular flow-way.
  • the sequencing mechanism not only controls the order in which the two flowways are closed, but also the relative speed with which they are closed. It will also be appreciated that the machine operator would accomplish this sequencing by a single movement of one switch, namely the valve handle 114.
  • valve handle 114 In order to re-open the flow-ways and start up the equipment, the valve handle 114 would be turned to place the valve element 104 once again in the position shown in solid lines in FIG. 2. This causes the control fluid to flow in a second flow pattern in the control fluid passageways.
  • the solid line position of valve element 104 vents the upstanding part 78 to atmosphere so that the pressurized control fluid in areas 38 and 66 tends to begin flowing out of these areas.
  • the fluid in area 38 flows freely through air closure passageway 90 past one-way valve 92, through bore 88, line 80, and valve 82 to atmosphere. This quickly relieves the pressure in area 38.
  • control means of the invention is particularly advantageous and convenient since its control fluid can be compressed air supplied by tapping the source of air to the air flow-way.
  • a control means for use with apparatus for pneumatic transfer of a particulate material of the type including an air directing portion having an air flow-way therethrough, means supplying said air flow-way with compressed air, and a particulate directing portion having a particulate flow-way therethrough communicating with said air flow-way to deposit said particulate material in said air flow-way, said control means comprising:
  • air flow-way closure means operative to open and close said air flow-way
  • particulate flow-way closure means operative to open and close said particulate flow-way
  • a sequencing mechanism operatively connected to said air flow-way closure means and to said particulate flow-way closure means and having control fluid passageways and including means responsive to a first flow pattern of said control fluid in said control fluid passageways, when said air flow-way closure means and said particulate flow-way closure means are both open, to cause closing of said particulate flow-way by said particulate flow-way closure means first. followed by closing of said air flow-way by said air flow-way closure means;
  • Control means according to claim 1 wherein said sequencing mechanism includes means responsive to a second flow pattern of said control fluid in said control fluid passageways when said closure means are both closed to cause opening of said air flow-way by said air flow-way closure means first, followed by opening of said particulate flow-way by said particulate flow-way closure means, said control means further comprising means for selectively causing said control fluid to flow in said second pattern.
  • Control means according to claim 2 wherein said means responsive to said first flow pattern is further operative to cause the closing of said air flow-way to proceed at a slower rate than the closing of said particulate flow-way and wherein said means responsive to said second flow pattern is further operative to cause the opening of said particulate flow-way to proceed at a slower rate than the opening of said air flow-way.
  • Control means includes an air flow-way closure operator having first and second sides and movable in response to pressure on said first side thereof greater than pressure on the second side thereof to cause closing of said air flow-way;
  • said particulate flow-way closure means includes a particulate flow-way closure operator having first and second sides and movable in response to pressure on said first side thereof greater than pressure on said second side thereof to cause closing of said particulate;
  • sequencing mechanism has therein:
  • a main control fluid passageway a main control fluid passageway, an inlet for delivering said control fluid to said main control fluid passageway, an air closure passageway connecting said main control fluid passageway with a first area on said first side of said air flow-way closure operator, a one-way valve in said air closure passageway operative by pressure in said main control fluid passageway greater than the pressure in said first area to close said air closure passageway, a first bleed hole of smaller diameter than said main control fluid passageway connecting said main control fluid passageway to said first area, and a particulate closure passageway of greater diameter than said bleed hole connecting said main control fluid passageway with a second area on said one side of said particulate passageway closure operator.
  • Control means further includes a one-way valve in said particulate closure passageway operative by pressure in said second area greater than the pres sure in said main control fluid passageway to close said particulate closure passageway, and has therein a second bleed hole of smaller diameter than said main control fluid passageway connecting said particulate closure passageway to said main control fluid passageway.
  • Control means according to claim 1 wherein said control fluid is comprised of compressed air from said supplying means, and wherein said control means includes means for selectively injecting compressed air from said supplying means into the control fluid passageways of said sequencing mechanism.
  • Control means according to claim 1 wherein said pneumatic transfer apparatus is abrasive blasting apparatus and said particulate material is abrasive.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Transport Of Granular Materials (AREA)
  • Nozzles (AREA)
  • Reciprocating Pumps (AREA)
  • Mechanically-Actuated Valves (AREA)
US470227A 1974-05-15 1974-05-15 Particulate transfer control device Expired - Lifetime US3893262A (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
US470227A US3893262A (en) 1974-05-15 1974-05-15 Particulate transfer control device
CA218,894A CA1015006A (en) 1974-05-15 1975-01-29 Particulate transfer control device
GB15935/75A GB1499594A (en) 1974-05-15 1975-04-17 Particulate transfer control device
ZA00752546A ZA752546B (en) 1974-05-15 1975-04-21 Particulate transfer control device
JP50049200A JPS5820756B2 (ja) 1974-05-15 1975-04-24 リユウタイイソウセイギヨソウチ
NL7505613A NL7505613A (nl) 1974-05-15 1975-05-13 Regelinrichting voor gebruik met een inrichting voor het pneumatisch transporteren van een deel- tjesvormig materiaal.
BE156290A BE829003A (fr) 1974-05-15 1975-05-13 Dispositif de commande d'un transporteur pneumatique de particules
BR3797/75A BR7502977A (pt) 1974-05-15 1975-05-14 Dispositivo de controle a ser utilizado com aparelho destinado a transferir pneumaticamente material em particulas
DK212175A DK212175A (da) 1974-05-15 1975-05-14 Styreanordning for apparat til pneumatisk overforing af partikelformede materialer
NO751714A NO751714L (enrdf_load_stackoverflow) 1974-05-15 1975-05-14
SE7505528A SE7505528L (sv) 1974-05-15 1975-05-14 Styranordning vid pneumatisk befordran av kornigt material.
ES437701A ES437701A1 (es) 1974-05-15 1975-05-14 Un dispositivo regulador utilizable en un aparato destinado a transferir neumaticamente un material particulado.
DE2521670A DE2521670C2 (de) 1974-05-15 1975-05-15 Druckmittelbetätigte Steuereinrichtung an einer Sandstrahlanlage
FR7515265A FR2271149A1 (enrdf_load_stackoverflow) 1974-05-15 1975-05-15

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US470227A US3893262A (en) 1974-05-15 1974-05-15 Particulate transfer control device

Publications (1)

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US3893262A true US3893262A (en) 1975-07-08

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ID=23866758

Family Applications (1)

Application Number Title Priority Date Filing Date
US470227A Expired - Lifetime US3893262A (en) 1974-05-15 1974-05-15 Particulate transfer control device

Country Status (14)

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US (1) US3893262A (enrdf_load_stackoverflow)
JP (1) JPS5820756B2 (enrdf_load_stackoverflow)
BE (1) BE829003A (enrdf_load_stackoverflow)
BR (1) BR7502977A (enrdf_load_stackoverflow)
CA (1) CA1015006A (enrdf_load_stackoverflow)
DE (1) DE2521670C2 (enrdf_load_stackoverflow)
DK (1) DK212175A (enrdf_load_stackoverflow)
ES (1) ES437701A1 (enrdf_load_stackoverflow)
FR (1) FR2271149A1 (enrdf_load_stackoverflow)
GB (1) GB1499594A (enrdf_load_stackoverflow)
NL (1) NL7505613A (enrdf_load_stackoverflow)
NO (1) NO751714L (enrdf_load_stackoverflow)
SE (1) SE7505528L (enrdf_load_stackoverflow)
ZA (1) ZA752546B (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4624080A (en) * 1983-01-13 1986-11-25 Bilskade-Service Hb Arrangement for use with blasting equipment
WO1990015694A1 (en) * 1989-06-15 1990-12-27 B.H.R. Group Limited Feeding an abrasive mixture
EP0694367A1 (fr) * 1994-07-26 1996-01-31 KEGLER Maurice, GARAGE ET SABLAGE INDUSTRIEL Machine de sablage à commande à distance

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8401652D0 (en) * 1984-01-21 1984-02-22 Vapormatt Ltd Fluid flow control valves

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521931A (en) * 1948-10-18 1950-09-12 William H Mead Grit feed valve
US3070924A (en) * 1958-02-04 1963-01-01 Hastrup Herman Remote control system for fluid actuated mechanism
US3089285A (en) * 1962-04-19 1963-05-14 Pangborn Corp Abrasive blasting apparatus
US3139705A (en) * 1962-12-10 1964-07-07 Histed Howard Sandblast machine with precision sandfeed, remotely started and stopped
US3201901A (en) * 1963-09-30 1965-08-24 Alfred M Pauli Abrasive blasting equipment
US3543444A (en) * 1968-04-25 1970-12-01 Sun Shipbuilding & Dry Dock Co Abrasive blasting system
US3675374A (en) * 1970-11-09 1972-07-11 Carborundum Co Direct pressure treating device
US3768210A (en) * 1972-06-23 1973-10-30 C Johnson Automatic sandblast machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148484A (en) * 1963-01-15 1964-09-15 Jaroco Internat Inc Sandblast generator

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2521931A (en) * 1948-10-18 1950-09-12 William H Mead Grit feed valve
US3070924A (en) * 1958-02-04 1963-01-01 Hastrup Herman Remote control system for fluid actuated mechanism
US3089285A (en) * 1962-04-19 1963-05-14 Pangborn Corp Abrasive blasting apparatus
US3139705A (en) * 1962-12-10 1964-07-07 Histed Howard Sandblast machine with precision sandfeed, remotely started and stopped
US3201901A (en) * 1963-09-30 1965-08-24 Alfred M Pauli Abrasive blasting equipment
US3543444A (en) * 1968-04-25 1970-12-01 Sun Shipbuilding & Dry Dock Co Abrasive blasting system
US3675374A (en) * 1970-11-09 1972-07-11 Carborundum Co Direct pressure treating device
US3768210A (en) * 1972-06-23 1973-10-30 C Johnson Automatic sandblast machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4624080A (en) * 1983-01-13 1986-11-25 Bilskade-Service Hb Arrangement for use with blasting equipment
WO1990015694A1 (en) * 1989-06-15 1990-12-27 B.H.R. Group Limited Feeding an abrasive mixture
EP0694367A1 (fr) * 1994-07-26 1996-01-31 KEGLER Maurice, GARAGE ET SABLAGE INDUSTRIEL Machine de sablage à commande à distance
FR2723020A1 (fr) * 1994-07-26 1996-02-02 Kegler Maurice Machine de sablage a commande a distance

Also Published As

Publication number Publication date
JPS5820756B2 (ja) 1983-04-25
NL7505613A (nl) 1975-11-18
DK212175A (da) 1975-11-16
ZA752546B (en) 1976-05-26
GB1499594A (en) 1978-02-01
ES437701A1 (es) 1977-01-16
BE829003A (fr) 1975-09-01
CA1015006A (en) 1977-08-02
DE2521670C2 (de) 1983-05-19
NO751714L (enrdf_load_stackoverflow) 1975-11-18
DE2521670A1 (de) 1975-11-27
FR2271149A1 (enrdf_load_stackoverflow) 1975-12-12
BR7502977A (pt) 1976-03-23
SE7505528L (sv) 1975-11-17
JPS50146993A (enrdf_load_stackoverflow) 1975-11-25

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