EP0029346A1 - Improvements in or relating to rotary impeller wheels for a blast cleaning apparatus - Google Patents
Improvements in or relating to rotary impeller wheels for a blast cleaning apparatus Download PDFInfo
- Publication number
- EP0029346A1 EP0029346A1 EP19800304063 EP80304063A EP0029346A1 EP 0029346 A1 EP0029346 A1 EP 0029346A1 EP 19800304063 EP19800304063 EP 19800304063 EP 80304063 A EP80304063 A EP 80304063A EP 0029346 A1 EP0029346 A1 EP 0029346A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- slots
- blade
- blade member
- side edge
- cross
- 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.)
- Ceased
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Classifications
-
- 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
- B24C5/062—Rotor blades or vanes; Locking means therefor
Definitions
- the invention is concerned with improvements in or relating to rotary impeller wheels for blast cleaning apparatus and the components of such wheels.
- a rotary impeller wheel is located within a housing.
- Metallic abrasive or other cleaning material is fed to the centre of the wheel in an axial direction and discharged radially under centrifugal action as the wheel rotates.
- a control member or control cage is located around the central hub of the wheel and has a peripheral opening through which the cleaning material is discharged. The control cage is rotatable relative to the wheel hub in order to alter the direction of discharge of the cleaning material.
- the rotary impeller wheel includes radially extending blades which are subject to considerable wear and thus require frequent replacement. It is convenient to be able to replace the blades by removing the control cage, removing the worn blades through the central aperture and inserting replacement blades through the aperture, as this does not therefore require dismantling of any of the components of the housing.
- a blade mounting plate for a rotary impeller wheel comprising a centrally located through aperture and, in one side face of the plate and opening on to said one side face, a plurality of radially extending slots, each of which opens at one end into the aperture, and has such a cross section that the side face opening has a lateral dimension less than a corresponding internal dimension, whereby a blade suhstgantial ly having a cross section complementary to that of the slots can be retained in a respective slot when one side edge of the blade is entered from the central aperture through the open end of the slot.
- each slot terminates short of the radially outermost edge of the plates.
- weans are provided for biasing the blade in a direction parallel to the axis of the plate into intimate engogement with internal walls of the slot.
- the biasing mans may comprise a recess formed in the base of each slot for receiving a biasing spring.
- the slots may be arranged in diametrically opposed pairs on said one side face of the plate.
- the slots may be arranged such that each is diametrically opposed to a location intermediate another pair of slots.
- the slots extend over an area which way be of substantially truncated conical cross section, terminating in a raised edge at the central aperture.
- a rotary impeller wheel comprising a blade mounting plate as described in any of the five preceding paragraphs, and at least one blade, one side edge of which has a cross section complementary to that of the slots.
- an airless blast cleaning apparatus i.e. an apparatus wherein the abrasive cleaning medium is thrown by mechanical means, eliminating the need for compressed air, includes a rotary impeller wheel 10 mounted on the end of a rotatable shaft 12 by means of a hub assembly 14.
- the wheel 10 includes a central impeller 16 of cage-like construction and a series of radially extending blades 18 secured on a blade mounting side plate 20 as hereinafter described.
- a control cage 22 surrounds the impeller 16 and is angularly odjustably mounted on an external housing 24 enclosing the wheel 10.
- the control cage 22 is provided with a peripheral opening the position of which relative to the impeller wheel 16 determines the direction of which the abrasive cleaning medium is directed out of the apparatus during operation.
- the abrasive medium is introduced into the impeller wheel 10 by means of a feed chute assembly 26 mounted on a supporting bracket 28.
- the side plate 20 (Figs. 2 and 3) is of circular configuration having a centrally located through aperture 30.
- Each slot 34 opens at its top on to the face 32 and also opens at a radially inner ond on to the central aperture 30.
- the cross section of each slot 34 is substantially of dovetail shape such that side walls 36 extend in converging paths from a base 38 of the slot with the width of the base 38 being greater than the width of the open top.
- Each slot 34 terminates at its radially outermost end short of the peripheral edge of the plate 20 and is provided in its base 38 with a substantially rectangular recess 40 for receiving a compression spring (not shown) for a purpose hereinafter described.
- the plate 20 On the opposed face 42 the plate 20 is formed as a circular recess 44 for receiving a respective part of the hub assembly 14, the plate 20 being secured to the hub assembly 14 by means of screws 46 (Fig. 1) extending through the hub assembly 14 into fixing holes 48 on the plcates 20.
- Each of the blades 18 (Figs. 4 and 5) is of substantially rectangular shape formed of a wear resistant material, and has its opposed side faces identical. At one side edge, each of the blades 18 has a mounting lug 50 extending along the length of the blade 18 over a distance corresponding to the length of the slots 34.
- the lug 50 has a cross section complementary to that of the slots 34 such that the lug 50 can enter a respective one of the slots 34 from the in aperture 30/to the open end of the slot 34, and be held against removal from the slot 34 in a direction parallel to the axis of the plate 20.
- a spring is located in the recess 40 of the slot 34, the blade 18 is biased into intimate contact with the inner faces of the walls 36 of the slot 34 to be frictionally retained against movement out of the slot 34 in a radial direction.
- the blade 18 As the blade 18 is longer than the lug 50, the blade 18 overlies a peripheral rim of the plate 20 when the lug 50 is moved wholly within the slot 34.
- the blade 18 at said one side edge is provided with a laterally extending lip 52 on each face, each lip 52 being angled from the radially innermost end of the blade 18 to terminate in a maximum height at the radially outermost end of the blade 18.
- the lips 52 enable a radiused surface to be formed at each face of the blade 18 for increased wear resistance at the junction between the blade 18 and the plate 20.
- the other side edge of the blade 18 has a cross section defining laterally extending lips 54 to assist in the directing of the abrasive medium.
- This embodiment is suitable for impeller wheels of diameters up to 15 inches where the length of the blades is less than the diameter of the central aperture, such that, with the control cage removed, worn blades can be removed and replacement blades provided by sliding of the blades in the slots via the central aperture.
- the length of the blade is greater than the diameter of the central aperture and therefore such removal and replacement of blades is not possible.
- the second embodiment as shown in Figs. 6 to 9 is provided to achieve this possibility.
- the blade mounting plate 20 is of circular configuration having a central through aperture 60.
- One face 62 of the plate 20 i.e. that face on which the blades 18 are mounted, is provided with a plurality of radially extending slots 64 which are of identical configuration to the slot 34 of the first embodiment but of different dimensions, resulting from the different sizes of wheel being used.
- Each slot 64 is arranged to be diametrically opposed to a location intermediate of two other adjacent slots 64 for a purpose hereinafter described.
- the plate 20 has a cross section which, in an area 65 over which the slots 64 extend, is of truncated conical section terminating in an edge of the aperture 60 raised above the peripheral rim. As in the first embodiment the slots 64 terminate at their radially outermost ends short of the peripheral edge of the plate.
- Each of the blades 18' (Figs. 8 and 9), provided for the second embodiment, is of substantially rectangular configuration having its opposed faces identical.
- One side edge, i.e, that edge to be mounted on the plate 20 - is provided with a mounting lug 70 which is complementary in cross section to the slots 64 and which extends at an angle relative to the side edge or the blade 18 corresponding to the cone angle of the area 65 of the face 62.
- That end of the lug 70 which is radially outermost in use is provided with a flat 72 extending parallel to the edge of the blade 18 for a purpose hereinafter described.
- a lip 74 is provided on each face of the blade 18 at said one edge to extend from a location along the lug 70 to the end of the blade 18 which overlies the peripheral rim of the plate 20 in use.
- the lips 74 enable radiused surfaces to be provided at the connection of the blades 18 and the plate 20 .
- the other side edge of the blade 18 is of similar configuration to the corresponding side edge of the blade 18 of the first embodiment.
- the raised edge of the aperture 60 and the corresponding angles of the slot 64 and the lug 70 enable the respective end of the lug 70 to enter the slot 64 while the other end of the lug 70 remains clear of the edge of the aperture 60 at the diametrically opposed location.
- the flat 72 facilitates the entry of the lug 70 into the slot 64.
- the plate 20 also has a circular recess in its other side face and mounting holes for attachment of the plate to the hub assembly. Again these features are similar to those of the firrt embodiment and like numerals therefore refer to like parts.
- An arrangement according to the invention is advantageous in that a single sided impeller wheel is easier and cheaper to manufacture than the conventional double sidec wheels. Also the rotating mass is reduced and therefore less power is required at start-up of the machine. Further renewal and replacement of blades is possible for impeller wheels of any diameter and this is particularly advantageous in that dismantling of housings or hoods for the impeller wheels is not required when replacement of the blades becomes necessary.
- the blades are conveniently retained in their slots against both axial and radial movement in use and the impeller wheels can be adopted to fit any existing blast cleaning machine with a suitable arrangement of mounting holes. It is envisaged that different arrangements of mounting holes are provided on each blade mounting plate for this purpose.
- the components are made of a wear resistant material where appropriate and all connecting edges are rounded off where possible.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Cleaning In General (AREA)
Abstract
A rotary impeller wheel for blast cleaning apparatus comprises a blade mounting plate (20) having a central aperture (30) and a plurality of radially extending slots (34) opening into the aperture. Each slot (34) is adapted to receive a blade (18) for throwing of abrasive medium, each blade (18) having a lug (50) extending along part of one side edge, and the cross sections of the slots (34) and the lugs (50) being complementary. The length of the lugs (50) is such that the lugs (50) can enter the slots (34) from the central aperture (30) and the complementary cross sections are such that the blades (18) are retained in the respective slots in an axial direction.
Description
- The invention is concerned with improvements in or relating to rotary impeller wheels for blast cleaning apparatus and the components of such wheels.
- In one conventional kind of blasting apparatus a rotary impeller wheel is located within a housing. Metallic abrasive or other cleaning material is fed to the centre of the wheel in an axial direction and discharged radially under centrifugal action as the wheel rotates. A control member or control cage is located around the central hub of the wheel and has a peripheral opening through which the cleaning material is discharged. The control cage is rotatable relative to the wheel hub in order to alter the direction of discharge of the cleaning material.
- The rotary impeller wheel includes radially extending blades which are subject to considerable wear and thus require frequent replacement. It is convenient to be able to replace the blades by removing the control cage, removing the worn blades through the central aperture and inserting replacement blades through the aperture, as this does not therefore require dismantling of any of the components of the housing.
- According to the present invention there is provided a blade mounting plate for a rotary impeller wheel, the plate comprising a centrally located through aperture and, in one side face of the plate and opening on to said one side face, a plurality of radially extending slots, each of which opens at one end into the aperture, and has such a cross section that the side face opening has a lateral dimension less than a corresponding internal dimension, whereby a blade suhstgantial ly having a cross section complementary to that of the slots can be retained in a respective slot when one side edge of the blade is entered from the central aperture through the open end of the slot.
- Preferably the other end of each slot terminates short of the radially outermost edge of the plates.
- Preferably also weans are provided for biasing the blade in a direction parallel to the axis of the plate into intimate engogement with internal walls of the slot. The biasing mans may comprise a recess formed in the base of each slot for receiving a biasing spring.
- In one arrangement the slots may be arranged in diametrically opposed pairs on said one side face of the plate. In an alternative arrangement the slots may be arranged such that each is diametrically opposed to a location intermediate another pair of slots.
- On said one side face of the plate, the slots extend over an area which way be of substantially truncated conical cross section, terminating in a raised edge at the central aperture.
- According to the present invention there is also provided a rotary impeller wheel comprising a blade mounting plate as described in any of the five preceding paragraphs, and at least one blade, one side edge of which has a cross section complementary to that of the slots.
- Embodiments of the present invention will now be described by way of example only with reference to the accompanying drawings, in which:-
- Fig. 1 is a sectional front elevation of a blast cleaning apparatus;
- Fig. 2 is a plan view of a blade mounting plate for use in o rotary impeller wheel according to one embodiment of the invention;
- Fig. 3 is a section on X-X of Fig. 2;
- Fig. 4 is a side view of a blade for use with the blade mounting plate of Figs. 2 and 3;
- Fig. 5 is a perspective view from one end of the blade of Fig. 4;
- Fig. 6 is a plan view of a blade mounting plate for a rotary impeller wheel according to a second embodiment of the invention;
- Fig. 7 is a section on A-A of Fig. 6;
- Fig. 8 is a side view of a plate for use with the blade mounting plate of Figs. 6 and 7; and
- Fig. 9 is a perspective view from one end of the blade of Fig. 8.
- Referring to Figs. 1 to 5 of the drawings an airless blast cleaning apparatus, i.e. an apparatus wherein the abrasive cleaning medium is thrown by mechanical means, eliminating the need for compressed air, includes a
rotary impeller wheel 10 mounted on the end of arotatable shaft 12 by means of ahub assembly 14. Thewheel 10 includes acentral impeller 16 of cage-like construction and a series of radially extendingblades 18 secured on a blademounting side plate 20 as hereinafter described. A control cage 22 surrounds theimpeller 16 and is angularly odjustably mounted on an external housing 24 enclosing thewheel 10. The control cage 22 is provided with a peripheral opening the position of which relative to theimpeller wheel 16 determines the direction of which the abrasive cleaning medium is directed out of the apparatus during operation. The abrasive medium is introduced into theimpeller wheel 10 by means of afeed chute assembly 26 mounted on a supportingbracket 28. - The side plate 20 (Figs. 2 and 3) is of circular configuration having a centrally located through
aperture 30. On oneside foce 32 of theplate 20, i.e. the face on which theblades 18 are mounted, there are provided a plurality of radially extendingslots 34 which are arranged in diametrically opposed pairs. Eachslot 34 opens at its top on to theface 32 and also opens at a radially inner ond on to thecentral aperture 30. The cross section of eachslot 34 is substantially of dovetail shape such thatside walls 36 extend in converging paths from abase 38 of the slot with the width of thebase 38 being greater than the width of the open top. Eachslot 34 terminates at its radially outermost end short of the peripheral edge of theplate 20 and is provided in itsbase 38 with a substantiallyrectangular recess 40 for receiving a compression spring (not shown) for a purpose hereinafter described. - On the
opposed face 42 theplate 20 is formed as acircular recess 44 for receiving a respective part of thehub assembly 14, theplate 20 being secured to thehub assembly 14 by means of screws 46 (Fig. 1) extending through thehub assembly 14 intofixing holes 48 on theplcates 20. - Each of the blades 18 (Figs. 4 and 5) is of substantially rectangular shape formed of a wear resistant material, and has its opposed side faces identical. At one side edge, each of the
blades 18 has amounting lug 50 extending along the length of theblade 18 over a distance corresponding to the length of theslots 34. Thelug 50 has a cross section complementary to that of theslots 34 such that thelug 50 can enter a respective one of theslots 34 from the inaperture 30/to the open end of theslot 34, and be held against removal from theslot 34 in a direction parallel to the axis of theplate 20. When a spring is located in therecess 40 of theslot 34, theblade 18 is biased into intimate contact with the inner faces of thewalls 36 of theslot 34 to be frictionally retained against movement out of theslot 34 in a radial direction. - As the
blade 18 is longer than thelug 50, theblade 18 overlies a peripheral rim of theplate 20 when thelug 50 is moved wholly within theslot 34. Theblade 18 at said one side edge is provided with a laterally extendinglip 52 on each face, eachlip 52 being angled from the radially innermost end of theblade 18 to terminate in a maximum height at the radially outermost end of theblade 18. Thelips 52 enable a radiused surface to be formed at each face of theblade 18 for increased wear resistance at the junction between theblade 18 and theplate 20. The other side edge of theblade 18 has a cross section defining laterally extendinglips 54 to assist in the directing of the abrasive medium. - This embodiment is suitable for impeller wheels of diameters up to 15 inches where the length of the blades is less than the diameter of the central aperture, such that, with the control cage removed, worn blades can be removed and replacement blades provided by sliding of the blades in the slots via the central aperture. For impeller wheels which are over 15 inches in diameter the length of the blade is greater than the diameter of the central aperture and therefore such removal and replacement of blades is not possible. The second embodiment as shown in Figs. 6 to 9 is provided to achieve this possibility.
- In the second embodiment, the
blade mounting plate 20 is of circular configuration having a central throughaperture 60. Oneface 62 of theplate 20 , i.e. that face on which theblades 18 are mounted, is provided with a plurality of radially extendingslots 64 which are of identical configuration to theslot 34 of the first embodiment but of different dimensions, resulting from the different sizes of wheel being used. Like references have therefore been used to denote other like features. Eachslot 64 is arranged to be diametrically opposed to a location intermediate of two otheradjacent slots 64 for a purpose hereinafter described. - The
plate 20 has a cross section which, in anarea 65 over which theslots 64 extend, is of truncated conical section terminating in an edge of theaperture 60 raised above the peripheral rim. As in the first embodiment theslots 64 terminate at their radially outermost ends short of the peripheral edge of the plate. - Each of the blades 18' (Figs. 8 and 9), provided for the second embodiment, is of substantially rectangular configuration having its opposed faces identical. One side edge, i.e, that edge to be mounted on the plate 20 - is provided with a
mounting lug 70 which is complementary in cross section to theslots 64 and which extends at an angle relative to the side edge or theblade 18 corresponding to the cone angle of thearea 65 of theface 62. That end of thelug 70 which is radially outermost in use is provided with a flat 72 extending parallel to the edge of theblade 18 for a purpose hereinafter described. Alip 74 is provided on each face of theblade 18 at said one edge to extend from a location along thelug 70 to the end of theblade 18 which overlies the peripheral rim of theplate 20 in use. Thelips 74 enable radiused surfaces to be provided at the connection of theblades 18 and theplate 20 . The other side edge of theblade 18 is of similar configuration to the corresponding side edge of theblade 18 of the first embodiment. - In use, a
blade 18, although of longer length than the diameter of theaperture 60, can enter the open end of a respective one of theslots 64 via theaperture 60. The raised edge of theaperture 60 and the corresponding angles of theslot 64 and thelug 70 enable the respective end of thelug 70 to enter theslot 64 while the other end of thelug 70 remains clear of the edge of theaperture 60 at the diametrically opposed location. Also the flat 72 facilitates the entry of thelug 70 into theslot 64. As eachslot 64 is not diametrically opposed to anyother slot 64, ablade 18 can be removed and replaced even when blades are already positioned in the other slots. - The
plate 20 also has a circular recess in its other side face and mounting holes for attachment of the plate to the hub assembly. Again these features are similar to those of the firrt embodiment and like numerals therefore refer to like parts. - An arrangement according to the invention is advantageous in that a single sided impeller wheel is easier and cheaper to manufacture than the conventional double sidec wheels. Also the rotating mass is reduced and therefore less power is required at start-up of the machine. Further renewal and replacement of blades is possible for impeller wheels of any diameter and this is particularly advantageous in that dismantling of housings or hoods for the impeller wheels is not required when replacement of the blades becomes necessary. The blades are conveniently retained in their slots against both axial and radial movement in use and the impeller wheels can be adopted to fit any existing blast cleaning machine with a suitable arrangement of mounting holes. It is envisaged that different arrangements of mounting holes are provided on each blade mounting plate for this purpose.
- It is also to be appreciated that the components are made of a wear resistant material where appropriate and all connecting edges are rounded off where possible.
- Various modifications may be made without departing from the invention. For example the means for retaining the blades in the slots by friction may be other than that described, while the blades and slots may be of a configuration other than that shown.
Claims (10)
1. Apparatus for use in a rotary impeller wheel, said apparatus comprising a plate member having a centrally located through aperture, characterised in that, in one side face (32, 62) of the plate member (20, 20'), and opening on to said one side face (32, 62), a plurality of radially extending slots (34, 64), are provided each of which opens at one end into the aperture (30, 60), and has such a cross section that the side face opening has a laterul dimension less than a corresponding internal dimension, whereby a blade member (18, 18'), at least part (50, 70) of one side edge of which has a cross section substantially complementary to that of the slots (34, 64), can be retained in a respective slot when said part (50, 70) of said one side edge of the blade member (18, 18') is entered from the central aperture (30, 60) through the open end of the slot (34, 64).
2. Apparatus according to claim 1, characterised in that means are provided for biasing the blade members (18, 18') in a direction parallel to the axis of the plate member (20, 20') into intimate engagement with internal walls of the slot (34, 64).
3. Apparatus according to claim 1 or 2, characterised in that the slots (34) are arranged in diametrically opposed pairs on said one side face (32) of the plate member (20).
4. Apparatus according to claim 1 or 2, characterised in that the slots (64) are arranged such that each is diametrically opposed to a location intermediate another pair of slots.
5. Apparatus according to claim 4, rharacterised in that, on said one side face (62) of the plate member (20'), the slots (64) extend over on area which has a substantially truncated conical cross section, terminating in a raised edge at the central aperture (60).
6. Apparatus for use in a rotary impeller wheel, said apparatus comprising a blade member, characterised in that at least part (50, 70) of one side edge of the blade member (18, 18') has a cross section wherein an inner portion has a lateral dimension 1ess than an outer portion, whereby the blade member (18, 18') . can be retained in a respective one of a plurality of radially extending slots (34, 64) each formed in one side face (32, 62) of a plate member (20, 20') and having a cross section substantially complementary to that of said one side edge part of the blade member.
7. Apparatus according to claim 6, characterised in that said part (70) of said one side edge extends at on angle relative to the longitudinal dimension of the blade member (18').
8. Apparatus according to claim 7, characterised in that one end of said part (70) of said one side edge has a flat (72) extending para11e1 to the longitudinal dimension of the blade member (18').
9. Apparatus according to claim 6, characterised in that said part (50) of said one side edge extends substantially parallel to the longitudinal dimension of the blade member (18).
10. A rotary impeller wheel characterised by a plate member (20, 20') according to any of claims 1 to 5, and at least one blade member (18, 18') according to any of claims 6 to 9, each of the slots (34, 64) in the plate member (20, 20') having a cross section substantially complementary to the cross section of said part (50, 70) of said one side edge of the blade member (18, 18').
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7939172 | 1979-11-13 | ||
GB7939172A GB2063116B (en) | 1979-11-13 | 1979-11-13 | Rotary impeller wheel for blast cleaning apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0029346A1 true EP0029346A1 (en) | 1981-05-27 |
Family
ID=10509148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19800304063 Ceased EP0029346A1 (en) | 1979-11-13 | 1980-11-13 | Improvements in or relating to rotary impeller wheels for a blast cleaning apparatus |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0029346A1 (en) |
GB (1) | GB2063116B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0291293A2 (en) * | 1987-05-12 | 1988-11-17 | Pangborn Corporation | A surface cleaner |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9211408D0 (en) * | 1992-05-29 | 1992-07-15 | Luttrell Peter B | Rotors for throwing particles centrifugally therefrom |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2108211A (en) * | 1934-05-17 | 1938-02-15 | Pangborn Corp | Abrading machine |
US2246522A (en) * | 1938-03-10 | 1941-06-24 | Pangborn Corp | Abrading apparatus |
US2341559A (en) * | 1941-09-05 | 1944-02-15 | Pangborn Corp | Abrading apparatus |
US2590576A (en) * | 1934-05-17 | 1952-03-25 | Pangborn Corp | Abrading apparatus |
US2869289A (en) * | 1957-01-24 | 1959-01-20 | Pangborn Corp | Reversible centrifugal blasting method and apparatus |
US3160992A (en) * | 1963-07-10 | 1964-12-15 | Pangborn Corp | Abrasive blasting wheel |
US3197920A (en) * | 1962-05-18 | 1965-08-03 | Pangborn Corp | Throwing wheel and parts therefor |
US3444651A (en) * | 1966-11-30 | 1969-05-20 | Max Geisseler | Centrifuging wheel |
-
1979
- 1979-11-13 GB GB7939172A patent/GB2063116B/en not_active Expired
-
1980
- 1980-11-13 EP EP19800304063 patent/EP0029346A1/en not_active Ceased
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2108211A (en) * | 1934-05-17 | 1938-02-15 | Pangborn Corp | Abrading machine |
US2590576A (en) * | 1934-05-17 | 1952-03-25 | Pangborn Corp | Abrading apparatus |
US2246522A (en) * | 1938-03-10 | 1941-06-24 | Pangborn Corp | Abrading apparatus |
US2341559A (en) * | 1941-09-05 | 1944-02-15 | Pangborn Corp | Abrading apparatus |
US2869289A (en) * | 1957-01-24 | 1959-01-20 | Pangborn Corp | Reversible centrifugal blasting method and apparatus |
US3197920A (en) * | 1962-05-18 | 1965-08-03 | Pangborn Corp | Throwing wheel and parts therefor |
US3160992A (en) * | 1963-07-10 | 1964-12-15 | Pangborn Corp | Abrasive blasting wheel |
US3444651A (en) * | 1966-11-30 | 1969-05-20 | Max Geisseler | Centrifuging wheel |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0291293A2 (en) * | 1987-05-12 | 1988-11-17 | Pangborn Corporation | A surface cleaner |
EP0291293A3 (en) * | 1987-05-12 | 1990-09-26 | Pangborn Corporation | A surface cleaner |
Also Published As
Publication number | Publication date |
---|---|
GB2063116A (en) | 1981-06-03 |
GB2063116B (en) | 1983-03-09 |
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PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
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AK | Designated contracting states |
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17P | Request for examination filed |
Effective date: 19811229 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN REFUSED |
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18R | Application refused |
Effective date: 19840410 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: TAYLOR, DANC/O AUTO ALLOYS R & D LIMITED |