AU8070287A - Pneumatic wheel sander - Google Patents

Pneumatic wheel sander

Info

Publication number
AU8070287A
AU8070287A AU80702/87A AU8070287A AU8070287A AU 8070287 A AU8070287 A AU 8070287A AU 80702/87 A AU80702/87 A AU 80702/87A AU 8070287 A AU8070287 A AU 8070287A AU 8070287 A AU8070287 A AU 8070287A
Authority
AU
Australia
Prior art keywords
bead
recess
pneumatic wheel
tyre
sander
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.)
Granted
Application number
AU80702/87A
Other versions
AU602018B2 (en
Inventor
Robert Keith Smith
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU80702/87A priority Critical patent/AU602018B2/en
Publication of AU8070287A publication Critical patent/AU8070287A/en
Application granted granted Critical
Publication of AU602018B2 publication Critical patent/AU602018B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D13/00—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
    • B24D13/02—Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor acting by their periphery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/02—Expansible drums for carrying flexible material in tubular form, e.g. expanded by centrifugal force

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Description

"PNEUMATIC WHEEL SANDER"
This invention relates to a pneumatic wheel sander, more particularly to a sander in which the tyre of the wheel is held in position by a simple and effective means.
5. BACKGROUND OF THE INVENTION
Pneumatic wheel sanders are well known and with these the bead of the tyre is held in position by being clamped between a removable rim or flange which is bolted or otherwise secured to the body of the wheel. Thus in order to produce such a wheel sander, 10. the body of the wheel has to be formed, and then a pair of replaceable flanges have to be produced which in turn have to be bolted to the body of the wheel.
Patent specification DE 3,431 ,670 discloses a grinding wheel in the form of a cylinder with an inflatable rubber wall. Annular grooves is. are provided in end flanges, the edges of the rubber wall being folded into the annular grooves and retained by end caps with skirts which fit into the grooves, the caps being held in position by a through bolt.
U.S. Patent 3,496,685 has an inflatable toroidal body mounted on a 20. central hub, and a pair of stiff flanking discs on the hub to support the sides of the toroidal body.
U.S. Patent 3,848,374 is a drum sander having a cylindrical base with a tubular inflatable jacket surrounding the cylindrical base, the jacket comprising radially folded bellows so that it expands to 25. engage the base and to engage a sleeve carrying a cylindrical sanding member.
Thus it is an object of this invention to provide a pneumatic wheel sander in which the tyre is retained in position in a simple and effective manner. It is a further object of this invention to provide a pneumatic wheel sander wherein the tyre is retained without the use of any clamping rings or flanges which have to be removed and replaced on the body of. the wheel.
5. BRIEF STATEMENT OF THE INVENTION
Thus there is provided according to the invention a pneumatic wheel sander, the body of the wheel having a central well, a circular flange integral with the wheel at each side of the wheel, each flange having a recess to receive the edge of the tyre, and a 10. retaining ring situated in each recess adjacent the outside of the tyre to retain the tyre in position.
BRIEF DESCRIPTION OF THE DRAWING
In order to more fully describe the invention reference will now be made to the accompanying drawing which is a cross-section of one 15. embodiment of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
As shown in the drawing the wheel 1 which can be of cast or moulded aluminium or other suitable metal or plastic is provided with a well 2 and two flanges 3, each flange being dished, in one 20. flange dish there being provided a threaded opening 4 to receive a fitting 5 which is adapted to suit various machines onto which the wheel may be fitted.
The threaded opening 4 is provided with a left-hand or right-hand thread 6 so that fitting 5 would not unscrew during use of the 25. wheel, when mounted on clockwise or counter-clockwise turning shafts.
The other dished opening in the opposite flange is provided with an air inlet valve 7 which connects to an axial and radial passage 8 opening into the well 2 so that the tyre 9 may be inflated. The air inlet valve may also be positioned in the wall of the recess if so desired.
The tyre 9 is provided with a peripheral bead or flange 10 on each side, this engaging in a recess 11 formed in the outer edge of the 5. flange. The recess 11 is formed with a re-entrant portion 12 to receive the bead, and after the tyre is inserted a retaining member 13 is inserted in the recess adjacent the outer edge of the bead. The bead is internally facing and has an edge 14 to engage lip 15 in the re-entrant portion 12 of recess 11.
ιo. The retaining member 13 can be an "0" ring of rubber or rubberlike compound or can be a circular endless coil spring, steel circlip, steel or metal wire, a plastic coated wire joined as by twisting the ends together.
Upon inflation of the wheel, the pressure in the well 2 causes the is. tyre to be inflated with the bead being pulled against the edge of the re-entrant portion and the "0" ring so forming an effective seal to prevent the escape of air.
Due to the shape of the tyre, upon inflation the beads would tend to move toward each other and thus into the recess, thus providing 20. the sealing required. The ring 13 assists in this sealing, but particularly retains the bead in position during assembly and inflation.
While the invention has been shown as applied to a wheel having a diameter greater than its width, the invention can also be applied to 25. sanding wheels of much greater length, that is having a length two or three times the diameter of the wheel or any combination of diameter and length.
Also while the invention has disclosed a particular formation of bead and recess, it is to be realized that the bead and recess may 30. be of other shapes, and also the angle in which the edge of the tyre engages the bead may vary, and for example with wheels of greater width, the angle of entry can be increased or decreased with the tyre edge thus bending through a greater or lesser angle and also it may not be necessary to have a particular bead engaging in a recess, but that the tyre can be retained merely by the sealing ring, particularly when the angle has been increased.
Although various forms of the invention have been described in some detail it is to be realized that the invention is not to be limited thereto but can include various modifications falling within the spirit and scope of the invention.

Claims (5)

THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS:
1. A pneumatic wheel sander, said sander comprising a central body having a pair of spaced flanges defining therebetween a central well, an annular recess on the outer portion of each flange, a cylindrical tyre having side walls, a bead on each side wall
5. received in a respective recess, and a retaining ring in each said recess adjacent the outside of the respective bead to retain each said bead in its respective recess, and means to inflate the tyre.
2. A pneumatic wheel sander as defined in claim 1, wherein each annular recess is formed in its respective flange on the side opposite said well, each said recess having a re-entrant portion extending toward said well, said retaining ring positioning said
5. bead in said re-entrant portion.
3. A pneumatic wheel sander as defined in claim 2, wherein said bead is formed on the inside surface of the respective side wall, said bead having an edge to engage a lip of the re-entrant portion, whereby inflation of the tyre causes the edge to sealingly
5. engage the said lip.
4. A pneumatic wheel sander as defined in claim 2, wherein said retaining ring is selected from an "0" ring, an endless coil spring, steel or metal wire or plastic coated wire.
5. A pneumatic wheel sander substantially as hereinbefore described with reference to and as illustrated in the accompanying drawing.
AU80702/87A 1986-10-07 1987-10-07 Pneumatic wheel sander Ceased AU602018B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU80702/87A AU602018B2 (en) 1986-10-07 1987-10-07 Pneumatic wheel sander

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPH8371 1986-10-07
AUPH837186 1986-10-07
AU80702/87A AU602018B2 (en) 1986-10-07 1987-10-07 Pneumatic wheel sander

Publications (2)

Publication Number Publication Date
AU8070287A true AU8070287A (en) 1988-05-06
AU602018B2 AU602018B2 (en) 1990-09-27

Family

ID=25639561

Family Applications (1)

Application Number Title Priority Date Filing Date
AU80702/87A Ceased AU602018B2 (en) 1986-10-07 1987-10-07 Pneumatic wheel sander

Country Status (1)

Country Link
AU (1) AU602018B2 (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2490472A (en) * 1948-03-25 1949-12-06 Arthur R Raske Buffing and polishing device
US2870582A (en) * 1956-10-02 1959-01-27 Raske Arthur Inflated grinding wheel

Also Published As

Publication number Publication date
AU602018B2 (en) 1990-09-27

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