US3785105A - Centrifugal blasting wheel - Google Patents

Centrifugal blasting wheel Download PDF

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Publication number
US3785105A
US3785105A US00241226A US3785105DA US3785105A US 3785105 A US3785105 A US 3785105A US 00241226 A US00241226 A US 00241226A US 3785105D A US3785105D A US 3785105DA US 3785105 A US3785105 A US 3785105A
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US
United States
Prior art keywords
blade
blades
central opening
wheel
centrifugal blasting
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
US00241226A
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English (en)
Inventor
A Freeman
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.)
Wheelabrator Corp
Original Assignee
Wheelabrator Frye Inc
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Filing date
Publication date
Application filed by Wheelabrator Frye Inc filed Critical Wheelabrator Frye Inc
Application granted granted Critical
Publication of US3785105A publication Critical patent/US3785105A/en
Assigned to WHEELABRATOR CORPORATION, THE reassignment WHEELABRATOR CORPORATION, THE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SIGNAL APPLIED TECHNOLOGIES INC.
Assigned to SIGNAL APPLIED TECHNOLOGIES INC., A CORP OF DELAWARE reassignment SIGNAL APPLIED TECHNOLOGIES INC., A CORP OF DELAWARE MERGER (SEE DOCUMENT FOR DETAILS). EFFECTIVE ON 03/29/1985 DELAWARE Assignors: WHEELABRATOR-FRYE INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/04—Forming boards or similar elements the form surface being of wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/06—Impeller wheels; Rotor blades therefor

Definitions

  • a centrifugal blasting wheel which permits [52] US. Cl. 51/9 rapid and easy blade removal and replacement by viding: a control cage and impeller which can be removed from a central opening defined by the inner ends of the radially extending blades; a blade holdin means which utilizes the spacers holdin side plates apart to engage a holdin B24c 5/06 [58] Field of Int.
  • the invention relates generally to centrifugal blasting wheels. More specifically, it relates to an improved structure for holding the throwing blades of such wheels.
  • Centrifugal blasting wheels which are well known in the art are usually constituted by a rotatable wheel formed of a pair of side plates maintained in a spaced apart relationship.
  • a plurality of radially extending blades are mounted between the side plates and receive particulate material from an impeller mounted at the center of the wheel.
  • the blades are subject to wear due to the impact of the blast material on their surfaces and must be replaced periodically.
  • the blades have been designed to be inserted between the side plates from the periphery of the wheel and held inplace by elements such as spring locks, set screws or the like mechanically interengaging each other between the blades and the side plates.
  • Such retaining means have required special removal tools in some cases, extensive time for blade replacement and are themselves subject to wear and therefore require periodic replacement.
  • FIG. I is a side view in section of a centrifugal blasting wheel in accordance with the invention.
  • FIG. 2 is a view along the lines 2-2 of FIG. 1;
  • FIG. 3 is a perspective illustration of a blade constituting an aspect of the invention.
  • FIGS. 1 and 2 of the drawing there is shown a centrifugal blasting wheel in accordance with the invention.
  • a complete wheel assembly comprises the wheel itself 2 mounted in the housing 4.
  • a motor 6 rotates the wheel to propel particulate blast material out of an opening 8 in the bottom of the housing.
  • the material itself is supplied through a feed spout 10 to the center of the wheel as will be described.
  • the wheel 2 comprises a pair of side plates 12 and 14 maintained in a spaced apart relationship by a plurality of circumferentially arranged space means including spacers 16. Each spacer is mounted between the side plates by riveting or swagging its ends 18 in an opening provided for that purpose in the side plates. As may be seen, particularly in FIG. 2, each spacer is formed as cylinders so as to be circular in cross section. A cylindrical sleeve 20 constituting a part of the spacer means encompasses each spacer 16 and is formed from metallic material which is particularly hard so as to resist wear.
  • a hub 22 is secured to the side plate 14 by a suitable means such as by bolts (not shown).
  • the hub in turn is pressed onto a bushing 24 which is locked to a motor shaft 26 by a key 27.
  • the hub 22 is mounted for rotation within a felt seal 28 supported in a circular groove 30 provided in a seal retainer 32 forming a part of the housing 4. While the drive is shown as a direct drive an indirect drive such as one using sheaves and V-belts could be used.
  • the wheel includes a plurality of circumferentially spaced radially extending blades, each designated generally by reference numeral 34.
  • the blades are equally spacedaround the circumference of the wheel and, as may be seen in this embodiment, number eight. However, the number may be lesser or greater, it being desirable of course that an even number of blades be used to achieve wheel balance.
  • Each blade is provided with a throwing surface 36 and a first or outer end 38 and a second or inner end 40. As may be seen in the illustrated embodiment, the throwing surface 36 adjacent the inner end 40 is curved as shown at 42.
  • the wheel as shown in FIG. 2, is intended to be rotated counterclockwise so that the surfaces 42 are curved to the rear of the throwing surface 36 and opposite to the intended direction of rotation. While it is preferred that blades have the curved inner ends shown, this is not necessary as the blades may be provided with straight ends.
  • each blade is provided with side rails 44 which extend slightly forwardly of the throwing surface 36 and rearwardly thereof. Intermediate' the length of each side rail on the rearwardly extending portion thereof are curved shoulders 46 joining the side rail portion 48 starting from the inner end 40 to the portion 50 starting from the outer end 38. As may be seen, strengthening ribs such as shown at 52 may be provided extending transversely of the length of the side rails. When mounted between the wheel, the side rails engage in opposite grooves 53 in the side plates 12 and 14 extending along a radius passing near each spacer sleeve 20. As may be seen, the sleeves overlie the grooves to a slight degree.
  • the wheel 2 is completed by a hollow vaned impeller 54 mounted at a central opening 56 defined by the inner ends 40 of the blades 34.
  • the impeller is mounted on the shaft 26 by means of a centering plate 58 having a portion 60 extending into one end of the impeller.
  • the centering plate in turn is fastened to the shaft 26 by a cap screw or bolt 61 so that the impeller will be rotated with the wheel when the motor is energized.
  • the centering plate 58 is provided with a radially projecting portion or ledge 62 which is in contact with the inner end 40 of each blade 36 adjacent the side plate 14.
  • an adjustable stationary control cage 64 Surrounding the impeller 54 is an adjustable stationary control cage 64 having a discharge port or slot 66 through which particulate material which has been propelled by the impeller may pass to be engaged by a throwing surface 36 of a blade 34 so as to be propelled thereby out of the opening 8 adjacent a piece part to be cleaned or otherwise treated.
  • One end 68 of control cage 64 engages in an opening in a side wall 70 of the housing 4 and is held there by locking means (not shown) so that it may be adjusted to any desired angular position so as to control the direction of the blast.
  • Particulate material to be propelled by the blades 34 is supplied to the interior of the hollow impeller by a supply system of which the feed spout is a part.
  • the spout is held in position on the housing 2 by a flange 72 and a retaining clamp 74 movably mounted on the housing by a bolt 76 threaded in boss 78 on the housing wall 70.
  • a threaded clamping stud 80 on the free end of the clamp is screwed down on a boss 82 formed on the feed spout 10 to positively hold the spout in assembled position.
  • the wheel In operation, the wheel is rotated counterclockwise as indicated and at the same time blast material is supplied through the feed spout to the hollow interior of the impeller 54.
  • the vanes of the impeller engaging the material impart a velocity having a radial component thereto so as to propel it through the discharge port 66 of the control cage 64.
  • the material leaving the discharge port contacts the throwing surfaces 36 of the blades 34 as they rotate past that port and are accelerated along those surfaces to be propelled through the opening 8 against the piece part.
  • each blade 34 has a length which is less than the diameter of the central circular opening defined by their inner ends 40.
  • the blades When the blades are mounted in the grooves 53 in the wheel they are held against radial outward movement by the engagement of the curved shoulders 46 of the side rails 44 with the matching surfaces of the sleeves 20. Also, when so mounted a portion of their inner ends 40 engage the ledge 62 of the centering plate 58 so that inward radial movement is prevented, Thus, means are provided to positively hold each blade against inward or outward radial movement.
  • a cover 84 of the housing 4 may be opened and a wear plate 86 removed to expose the outer ends of the blades. This may be necessary for during operation of the wheel particulate material may have entered in whatever space may exist between the blade, side rails 44 and the walls of the grooves 53 in which they are mounted, thus requiring a force to be applied to their outer ends in order to free them for radial inward movement.
  • the blades are moved radially inward in grooves 53 until they are free of the grooves at which point they may be moved axially out of the central opening through the side wall for, as stated, their length is less than the diameter of the central opening.
  • Replacement blades may be inserted by passing them into the central opening, engaging the side rails in a pair of opposing grooves and sliding the blade radially outward in the grooves until its movement is stopped by the engagement with a sleeve 20 with the matching curve surfaces 46 on the side rails.
  • the side rail portions 50 are lower than the portions 48 permitting passage of the blades past the spacer sleeves until the surface 46 of the side rails engage the matching surface on the sleeves 20.
  • the control cage, impeller and centering plate may then be reassembled as may the other elements and wheel operation resumed.
  • the side rails need not extend the entire length of the blades but may terminate at orjust after the surfaces 46.
  • the blade need not be curved.
  • the spacer means constituting the spacer and sleeve may be formed as a unitary element. Other modifications may occur to those skilled in the art and it is intended by the claims to cover all such modifications as come within their scope.
  • a centrifugal blasting wheel mounted for rotation comprising: a pair of spaced circular side walls; cylindrical spacer means mounted in said side walls and extending therebetween to maintain them in spaced apart relation; a plurality of circumferentially spaced radially extending blades mounted between said side walls; said blades having inner and outer ends and front and rear surfaces, the front surface thereof constituting a throwing surface; said inner ends of said blades defining a central opening; a hollow vaned impeller mounted in said central opening for rotation with the wheel; a stationary control cage encompassing said impeller and having a discharge port; and one of said side walls having an opening therein substantially coextensive with said central opening to provide access to said central opening, said impeller and said control cage; the improvement wherein: each blade being of a length between its inner and outer ends less than the diameter of said central opening and the opening in said one of said side walls; each blade having a side rail extending along its length on either side of said throwing surface and extending away from its rear surface; each side rail having
  • a centrifugal blasting wheel as defined in claim 1 including a centering plate disposed in said central opening on one side thereof and having a portion engaging the inner ends of said blades.
  • each of said pair of grooves extend radially adjacent said spacer means and a portion of said spacer means overlies said grooves.
  • a centrifugal blasting wheel as defined in claim 5 including a centering plate disposed in said central opening on one side thereof and having a portion engaging the inner ends of said blades.
  • a blade for use with a centrifugal blasting wheel having a first end and a second end, front and rear surfaces, the front surface thereof constituting a throwing surface extending between said first and second ends, a pair of side rails, one of each pair of side rails extending along the length of the blade on either side of said throwing surface and rearwardly thereof, a first portion of each of said side rails extending further rearwardly of said throwing surface than a second portion thereof.
  • each of said side rails extend the entire length of the blade and said surface of each of said side rails is provided intermediate the length thereof.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Crushing And Pulverization Processes (AREA)
US00241226A 1972-04-05 1972-04-05 Centrifugal blasting wheel Expired - Lifetime US3785105A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US24122672A 1972-04-05 1972-04-05

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US3785105A true US3785105A (en) 1974-01-15

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US (1) US3785105A (xx)
AU (1) AU453631B2 (xx)
BE (1) BE797740A (xx)
BR (1) BR7208826D0 (xx)
CA (1) CA972160A (xx)
CH (1) CH556717A (xx)
FR (1) FR2179432A5 (xx)
GB (2) GB1404479A (xx)
IN (1) IN137740B (xx)
IT (1) IT982663B (xx)
SE (1) SE399834B (xx)
ZA (1) ZA728448B (xx)

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894360A (en) * 1974-04-30 1975-07-15 Benfur Eng Co Support-shielding blasting machine blade
US4034516A (en) * 1974-05-17 1977-07-12 Riichi Maeda Centrifugal blasting apparatus
US4073674A (en) * 1975-04-24 1978-02-14 Willy Hortel Method for production of multilayer composite plate
US4203263A (en) * 1977-11-17 1980-05-20 Georg Fischer Aktiengesellschaft Slinging wheel for centrifugal jet machines
US4207712A (en) * 1977-11-17 1980-06-17 Georg Fischer Ag Blade structure for centrifugal wheel
US4227351A (en) * 1978-04-17 1980-10-14 Firma Maschinen Und Werkzeugfabrik Kabel Vogel & Schemmann Centrifugal wheel assembly for spraying apparatus
US4277965A (en) * 1977-11-24 1981-07-14 Cockerill Centrifugal shotting turbine
US4333278A (en) * 1979-09-24 1982-06-08 Wheelabrator-Frye Inc. Bladed centrifugal blasting wheel
US4447993A (en) * 1982-04-16 1984-05-15 Laido Donald A Alignment means for centrifugal blasting wheel
US4480413A (en) * 1979-09-24 1984-11-06 Wheelabrator-Frye Inc. Bladed centrifugal blasting wheel
US4565035A (en) * 1984-04-19 1986-01-21 Kennecott Corporation Impeller even discharge apparatus
US5423715A (en) * 1993-03-15 1995-06-13 The Wheelabrator Corporation Bolt-together blast wheel
US6764390B2 (en) 2001-11-28 2004-07-20 International Surface Preparation Group, Inc. Centrifugal throwing vane
US20050107014A1 (en) * 2003-11-17 2005-05-19 International Surface Preparation Corporation Control cage for abrasive blast wheel
US20090137193A1 (en) * 2005-09-06 2009-05-28 Sintokogio, Ltd. Centrifugally Projecting Machine
US20090286456A1 (en) * 2005-12-20 2009-11-19 Masakatsu Ito Control-cage, a centrifugal shot-blasting device, and a centrifugal shot-blasting device for throwing abrasive grains
US20110117824A1 (en) * 2009-11-16 2011-05-19 Loutzenheiser Mathew Lynn Vane, mounting assembly and throwing wheel apparatus having a locking member tapered in two planes
US20110229335A1 (en) * 2008-12-12 2011-09-22 Masakatsu Ito Machine for centrifugally shooting abrasives
WO2015064263A1 (ja) * 2013-10-31 2015-05-07 新東工業株式会社 遠心投射機
WO2015064262A1 (ja) * 2013-10-31 2015-05-07 新東工業株式会社 側板ユニット及び遠心投射機
WO2015064261A1 (ja) * 2013-10-31 2015-05-07 新東工業株式会社 遠心投射機及びブレード
US9488548B2 (en) 2014-11-10 2016-11-08 Robert Bosch Gmbh Apparatus and method for testing an airbag control unit
CN106536132A (zh) * 2014-07-22 2017-03-22 新东工业株式会社 抛丸处理装置
WO2017061989A1 (en) * 2015-10-06 2017-04-13 Wheelabrator Group Limited System and method for timing impeller vanes with blades in a blast wheel machine
EP3197638A4 (en) * 2014-09-25 2018-08-29 Wheelabrator Group Limited Blade for centrifugal blast wheel machine and method of maintaining a centrifugal blast wheel machine
US20210069862A1 (en) * 2019-09-11 2021-03-11 Air-Bag Packing Co., Ltd. Impeller structure and projection equipment
US11826882B1 (en) * 2022-12-27 2023-11-28 Paul Enegren Blast wheel and quick-connect blade assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1500092A (en) * 1975-10-24 1978-02-08 Tilghman Wheelabrator Ltd Blast impellor wheels
TWI637815B (zh) * 2014-07-23 2018-10-11 日商新東工業股份有限公司 珠擊處理裝置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2376639A (en) * 1943-12-14 1945-05-22 American Foundry Equip Co Centrifugal throwing wheel
DE834340C (de) * 1945-04-25 1952-03-17 Fischer Ag Georg Schleuderrad zum Schleudern von Schleudergut
US2819562A (en) * 1956-05-07 1958-01-14 Wheelabrator Corp Centrifugal blasting wheel and blades for use in same
US3683556A (en) * 1970-04-13 1972-08-15 Raymond M Leliaert Centrifugal blasting wheel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2376639A (en) * 1943-12-14 1945-05-22 American Foundry Equip Co Centrifugal throwing wheel
DE834340C (de) * 1945-04-25 1952-03-17 Fischer Ag Georg Schleuderrad zum Schleudern von Schleudergut
US2819562A (en) * 1956-05-07 1958-01-14 Wheelabrator Corp Centrifugal blasting wheel and blades for use in same
US3683556A (en) * 1970-04-13 1972-08-15 Raymond M Leliaert Centrifugal blasting wheel

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3894360A (en) * 1974-04-30 1975-07-15 Benfur Eng Co Support-shielding blasting machine blade
US4034516A (en) * 1974-05-17 1977-07-12 Riichi Maeda Centrifugal blasting apparatus
US4073674A (en) * 1975-04-24 1978-02-14 Willy Hortel Method for production of multilayer composite plate
US4203263A (en) * 1977-11-17 1980-05-20 Georg Fischer Aktiengesellschaft Slinging wheel for centrifugal jet machines
US4207712A (en) * 1977-11-17 1980-06-17 Georg Fischer Ag Blade structure for centrifugal wheel
US4277965A (en) * 1977-11-24 1981-07-14 Cockerill Centrifugal shotting turbine
US4366690A (en) * 1977-11-24 1983-01-04 Cockerill Sambre Centrifugal shotting turbine
US4227351A (en) * 1978-04-17 1980-10-14 Firma Maschinen Und Werkzeugfabrik Kabel Vogel & Schemmann Centrifugal wheel assembly for spraying apparatus
US4333278A (en) * 1979-09-24 1982-06-08 Wheelabrator-Frye Inc. Bladed centrifugal blasting wheel
US4480413A (en) * 1979-09-24 1984-11-06 Wheelabrator-Frye Inc. Bladed centrifugal blasting wheel
US4447993A (en) * 1982-04-16 1984-05-15 Laido Donald A Alignment means for centrifugal blasting wheel
US4565035A (en) * 1984-04-19 1986-01-21 Kennecott Corporation Impeller even discharge apparatus
US5423715A (en) * 1993-03-15 1995-06-13 The Wheelabrator Corporation Bolt-together blast wheel
US5590467A (en) * 1993-03-15 1997-01-07 The Wheelabrator Corporation Method of making a blast wheel
US6764390B2 (en) 2001-11-28 2004-07-20 International Surface Preparation Group, Inc. Centrifugal throwing vane
US20050107014A1 (en) * 2003-11-17 2005-05-19 International Surface Preparation Corporation Control cage for abrasive blast wheel
US6949014B2 (en) 2003-11-17 2005-09-27 Wheelabrator Group, Inc. Control cage for abrasive blast wheel
US20090137193A1 (en) * 2005-09-06 2009-05-28 Sintokogio, Ltd. Centrifugally Projecting Machine
US7905766B2 (en) * 2005-09-06 2011-03-15 Sintokogio, Ltd. Centrifugally projecting machine
US20090286456A1 (en) * 2005-12-20 2009-11-19 Masakatsu Ito Control-cage, a centrifugal shot-blasting device, and a centrifugal shot-blasting device for throwing abrasive grains
US20110229335A1 (en) * 2008-12-12 2011-09-22 Masakatsu Ito Machine for centrifugally shooting abrasives
US8702476B2 (en) * 2008-12-12 2014-04-22 Sintokogio, Ltd. Machine for centrifugally shooting abrasives
US20110117824A1 (en) * 2009-11-16 2011-05-19 Loutzenheiser Mathew Lynn Vane, mounting assembly and throwing wheel apparatus having a locking member tapered in two planes
US8550881B2 (en) 2009-11-16 2013-10-08 Pangborn Corporation Vane, mounting assembly and throwing wheel apparatus having a locking member tapered in two planes
WO2015064261A1 (ja) * 2013-10-31 2015-05-07 新東工業株式会社 遠心投射機及びブレード
CN105873728B (zh) * 2013-10-31 2018-06-12 新东工业株式会社 侧板单元和离心投射机
WO2015064263A1 (ja) * 2013-10-31 2015-05-07 新東工業株式会社 遠心投射機
CN105873728A (zh) * 2013-10-31 2016-08-17 新东工业株式会社 侧板单元和离心投射机
CN105873729A (zh) * 2013-10-31 2016-08-17 新东工业株式会社 离心投射机和叶片
CN105873727A (zh) * 2013-10-31 2016-08-17 新东工业株式会社 离心投射机
US20160271753A1 (en) * 2013-10-31 2016-09-22 Sintokogio, Ltd. Centrifugal projector and blade
US10960514B2 (en) 2013-10-31 2021-03-30 Sintokogio, Ltd. Centrifugal projector and blade
JPWO2015064263A1 (ja) * 2013-10-31 2017-03-09 新東工業株式会社 遠心投射機
CN109894987A (zh) * 2013-10-31 2019-06-18 新东工业株式会社 离心投射机
CN109894987B (zh) * 2013-10-31 2021-01-01 新东工业株式会社 离心投射机
US10850367B2 (en) * 2013-10-31 2020-12-01 Sintokogio, Ltd. Centrifugal projector
JP2018118379A (ja) * 2013-10-31 2018-08-02 新東工業株式会社 遠心投射機
WO2015064262A1 (ja) * 2013-10-31 2015-05-07 新東工業株式会社 側板ユニット及び遠心投射機
US10071463B2 (en) 2013-10-31 2018-09-11 Sintokogio, Ltd. Centrifugal projector
US10105818B2 (en) * 2013-10-31 2018-10-23 Sintokogio, Ltd. Centrifugal projector and blade
US10112284B2 (en) 2013-10-31 2018-10-30 Sintokogio, Ltd. Side plate unit and centrifugal projector
CN105873729B (zh) * 2013-10-31 2018-12-28 新东工业株式会社 离心投射机和叶片
CN105873727B (zh) * 2013-10-31 2018-12-28 新东工业株式会社 离心投射机
US20190009386A1 (en) * 2013-10-31 2019-01-10 Sintokogio, Ltd. Centrifugal projector
EP3470175A1 (en) * 2013-10-31 2019-04-17 Sintokogio, Ltd. Centrifugal projector and blade
CN106536132A (zh) * 2014-07-22 2017-03-22 新东工业株式会社 抛丸处理装置
EP3197638A4 (en) * 2014-09-25 2018-08-29 Wheelabrator Group Limited Blade for centrifugal blast wheel machine and method of maintaining a centrifugal blast wheel machine
US10384327B2 (en) 2014-09-25 2019-08-20 Wheelabrator Group Limited Blade for centrifugal blast wheel machine and method of maintaining a centrifugal blast wheel machine
US9488548B2 (en) 2014-11-10 2016-11-08 Robert Bosch Gmbh Apparatus and method for testing an airbag control unit
WO2017061989A1 (en) * 2015-10-06 2017-04-13 Wheelabrator Group Limited System and method for timing impeller vanes with blades in a blast wheel machine
US20210069862A1 (en) * 2019-09-11 2021-03-11 Air-Bag Packing Co., Ltd. Impeller structure and projection equipment
US11826882B1 (en) * 2022-12-27 2023-11-28 Paul Enegren Blast wheel and quick-connect blade assembly

Also Published As

Publication number Publication date
BE797740A (fr) 1973-07-31
FR2179432A5 (xx) 1973-11-16
GB1404479A (en) 1975-08-28
SE399834B (sv) 1978-03-06
CH556717A (de) 1974-12-13
IN137740B (xx) 1975-09-13
AU4936872A (en) 1974-05-30
AU453631B2 (en) 1974-10-03
IT982663B (it) 1974-10-21
BR7208826D0 (pt) 1973-12-20
DE2311866B2 (de) 1976-08-05
DE2311866A1 (de) 1973-10-11
ZA728448B (en) 1973-08-29
GB1404478A (en) 1975-08-28
CA972160A (en) 1975-08-05

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Owner name: WHEELABRATOR CORPORATION, THE, INDIANA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SIGNAL APPLIED TECHNOLOGIES INC.;REEL/FRAME:004530/0026

Effective date: 19860115

Owner name: SIGNAL APPLIED TECHNOLOGIES INC., A CORP OF DELAWA

Free format text: MERGER;ASSIGNOR:WHEELABRATOR-FRYE INC.;REEL/FRAME:004530/0016

Effective date: 19850329