AU3878901A - Portable tyre bead breaker and spreader - Google Patents
Portable tyre bead breaker and spreader Download PDFInfo
- Publication number
- AU3878901A AU3878901A AU38789/01A AU3878901A AU3878901A AU 3878901 A AU3878901 A AU 3878901A AU 38789/01 A AU38789/01 A AU 38789/01A AU 3878901 A AU3878901 A AU 3878901A AU 3878901 A AU3878901 A AU 3878901A
- Authority
- AU
- Australia
- Prior art keywords
- spreader
- elongated
- bead breaker
- threaded rod
- relatively short
- 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.)
- Abandoned
Links
Description
P/00/01i1 Regulation 3.2
AUSTRALIA
Patents Act 1990
'ORIGINAL
COMPLETE SPECIFICATION STANDARD PATENT Invention Title: Portable tyre bead breaker and spreader The following statement is a full description of this invention, including the best method of performing it known to me: Freehilis Carter Smith BeadleMELC601 113016.9 2 TITLE: Portable Tyre Bead Breaker and Spreader.
FIELD OF THE INVENTION: The invention relates to a portable tyre bead breaker and spreader which can be used to break the seal of pneumatic tyres from the rim of a wheel and separate the tyre walls to enable repairs thereto.
BACKGROUND OF THE INVENTION: In removing a tyre from a wheel it is necessary to break the "bead" that is at the interface between the tyre and the rim.
Lever-like devices are currently in use for this purpose and rely on the principle of o applying pressure downwards against the tyre and upwards behind the rim.
Disadvantages of such lever-like devices include damage which can be caused to an
O
alloy rim. Also, the soft wall and tight bead of the soft walled tubeless tyres require ""that an inordinate amount of physical exertion is necessary to break the bead.
The present invention provides an effective and relatively effortless means of separating go the tyre from the wheel rim to facilitate removal of the tyre. It also provides a mechanism whereby the tyre can be spread laterally to facilitate repair using essentially the same device but with an additional component.
BRIEF SUMMARY OF THE INVENTION: This invention provides a device for breaking a tyre bead on a tyre fitted to a wheel and for assisting removal of that tyre from the wheel, which comprises: a framework adapted to fit across the diameter of the wheel; a first transversely spreading member secured to the framework and adapted to be inserted at at least two points adjacent to the bead; and a second laterally spreading member secured to the framework and adapted to push at least one portion of the bead laterally of the wheel, wherein removal of the tyre may be facilitated by the action of the second spreading member.
This invention further provides a bead breaker and spreader which comprises: a clamping mechanism, provided by two pairs of lugs of which the first 0.
pair of lugs is joined to the unattached end of an elongated telescoping rod, within which sits a an elongated threaded rod, the external end of which is perpendicularly attached to a relatively short telescoping rod, a second pair of lugs being joined to its bottom portion, within which bottom portion sits a relatively short threaded rod which is adapted at its lower external end to form or join a vertically adjustable plate, located between the second pair of lugs of the relatively short telescoping rod; 4L wherein the clamping mechanism secures the device across the rim of the wheel and the adjustable plate is then lowered downwards onto the tyre by respective extension of the elongated and relatively short threaded rods, by helical mechanism (or alternatively pneumatic or hydraulic mechanism) thereby breaking the bead between the tyre and the rim.
In an alternative embodiment the bead breaker and spreader comprises in addition: a detachable hook which rests over the unattached end of the elongated telescoping rod between the first pair of lugs and with the length of the hook against the under-side of the elongated telescoping rod wherein the second pair of lugs and the bottom portion of the hook sit within the tyre and by extension of the elongated threaded rod, the lugs move away from the hook thereby laterally spreading the tyre walls from each other in order to facilitate repairs.
BRIEF DESCRIPTION OF THE DRAWINGS: One embodiment of the invention is illustrated in the accompanying drawings in which: 9*9 Figure 1 is a cross-sectional horizontal view of a bead breaker (10) showing a "closed end" of the elongated telescoping rod (10A); an "open end" of the elongated telescoping rod (10B); a main rotatable nut a main driver means an elongated telescoping rod a first pair of lugs (14A1)(14A2); a subsidiary rotatable nut a subsidiary driver means a relatively short telescoping rod a "closed end" of the relatively short telescoping rod (17A); an "open end" of the relatively short telescoping rod (17B); a relatively short threaded rod a secondary internal nut (18A); a plate (18B); a second pair of lugs (19A)(19B); an elongated threaded rod (20) and a primary internal nut Figure 2 is a plan view of a second pair of lugs (19A) (19B) separated from each other by the adjustable plate.
Figure 3 is a cross-sectional side view of the hook device (30) showing a short flap a primary flap a primary hole a hook length (34) and a secondary flap Figure 4 is a perspective view of the bead breaker device with the first and second pairs of lugs (14A1, 14A2), (19A, 19B) securing the device across the diameter of the tyre plate; the plate (18B) in its depressed position and breaking the bead between the tyre and the rim of the wheel.
Figure 5 is a perspective view of the relatively short telescoping rod (17) showing the subsidiary rotatable nut the lug member (19A); the plate (18B) in its depressed position and pushing the tyre away from the rim of the wheel.
Figure 6 is a perspective view of the bead breaker and spreader showing the relatively short telescoping rod (17) and the second pair of lugs (19A, 19B) pushing against a tyre wall; the hook device (30) with the short flap the primary flap (32) and the primary hole (33) over the main rotatable nut; the hook length (34) resting against the underside of the elongated telescoping rod; the secondary flap (35) pulling against the tyre wall opposite to that stated previously.
DETAILED DESCRIPTION OF THE INVENTION: Preferably, the elongated telescoping rod comprises a rectangular tube-like device which houses an adjustable elongated threaded rod.
6 Preferably, the elongated threaded rod is a rectangular tube-like device of smaller diameter than the elongated telescoping rod.
Preferably, the elongated threaded rod is joined to a primary internal nut at its internal end, which end is contained within the elongated telescoping rod.
Preferably, the elongated threaded rod comprises a cylindrical hollow, which hollow faces a "closed end" of the elongated telescoping rod, wherein a helical section of thread extends down a portion of the length of the hollow and includes a primary internal nut.
Preferably, the main driver means is a screw-like device which comprises a helical section of thread extending down a portion of its length, which threaded section :°oooo corresponds with the helical thread of the hollow within the elongated threaded rod.
Preferably, the main driver means protrudes from the closed end of the elongated telescoping rod and attaches externally and fixably to a main rotatable nut.
Preferably, the main driver means is adapted to rotate such that a helical interaction of the driver means with the cylindrical hollow of the elongated threaded rod causes the elongated threaded rod to move horizontally (as viewed in use) up or down the length of the main driver means within the elongated telescoping rod.
Preferably, the externally viewable length of the elongated threaded rod within the elongated telescoping rod is adjustable by external manual rotation of the main rotatable nut and driver means.
Preferably, the relatively short telescoping rod is perpendicularly attached to the elongated threaded rod at its externally viewable end.
Preferably, a first pair of lugs attaches to each lateral side of the "closed end" of the elongated telescoping rod, adjacent to and on the inner side of the main rotatable nut.
Preferably, a second pair of lugs attaches to the bottom end (as viewed in use) of the relatively short telescoping rod wherein each lug member is located on either side of a plate.
Preferably, each pair of lugs comprises L-shaped portions parallel to each other within each pair.
Preferably, the lugs are attached at one end such that the free ends of the first pair of lugs point towards the free ends of the second pair of lugs.
Preferably, the clamping mechanism is provided by the elongated telescoping rod being positioned across the diameter of the wheel plate, wherein the second pair of lugs moves towards the first pair of lugs by longitudinal movement of the elongated threaded rod within the elongated telescoping rod, which longitudinal movement occurs via the external rotation of the main rotatable nut.
S Conveniently, the clamping mechanism thereby locks the device in place on the wheel plate.
Preferably, the relatively short telescoping rod comprises a rectangular tube-like device (of shorter length than the elongated telescoping device), which houses a relatively short threaded rod.
Preferably, the relatively short threaded rod is a rectangular tube-like device of smaller diameter than the relatively short telescoping rod.
Preferably, the relatively short threaded rod forms or joins a plate device at its externally visible end, which plate points towards the centre of the elongated threaded rod.
Preferably, the relatively short threaded rod is attached to a secondary internal nut at its internal end, which end is contained within the relatively short telescoping rod.
Preferably, the relatively short threaded rod comprises a cylindrical hollow space, which hollow space faces the "closed end" of the relatively short telescoping rod,, wherein a helical section extends down a portion of the length of the hollow space and includes the secondary internal nut.
Preferably, the subsidiary driver means is a screw-like device which comprises a helical section of thread extending down its length, which section corresponds with the helical thread of the hollow space within the relatively short threaded rod.
Preferably, the subsidiary driver means protrudes from a "closed end" of the relatively *o short telescoping rod and attaches externally and fixably to a subsidiary rotatable nut.
Preferably, the subsidiary driver means is adapted to rotate and by helical interaction of the driver means with the cylindrical hollow space of the relatively short threaded rod causes the relatively short threaded rod to move vertically (as viewed in use) up or down the length of the subsidiary driver means within the relatively short telescoping rod.
Preferably, the externally viewable length of the relatively short threaded rod (and therefore the relative depression of the plate) is adjustable by external manual rotation of the subsidiary rotatable nut and driver means which produces a helical interaction of the subsidiary driver means with the hollow portion of the relatively short threaded rod, which interaction moves the relatively short threaded rod vertically (as viewed in use) within the elongated telescoping rod.
Preferably, rotation of the subsidiary rotatable nut and thereby rotation of the subsidiary driver means enables lengthening of the externally viewable portion of the relatively short threaded rod by helical action, thereby depressing the plate perpendicularly onto the tyre.
Conveniently, the depressing action of the plate against the tyre effectively breaks the tyre bead with minimal physical exertion.
Preferably, the clamping and depressing mechanisms are effected by mechanical means.
e Alternatively, the clamping and depressing mechanisms are effected by means of a hydraulic device or a pneumatic device.
An alternative embodiment of the invention involves the use of a detachable hook device.
1..
Preferably, the hook device comprises a rectangular portion of the same width as the elongated telescoping rod.
Preferably, the hook comprises a perpendicular flap at one end and a perpendicular flap at the opposite end which flaps point in opposite directions to each other (hereinafter the "primary flap" and the "secondary flap").
Preferably, the primary flap comprises a hole in its centre portion and a short flap, extending at right angles towards the centre of the hook (as viewed in use).
Preferably, the hook length sits against and along the underside of the elongated telescoping rod, whereby the hole in the primary flap sits over the main rotatable nut and the secondary flap is situated on the same side as the lugs and plate.
Preferably, the device is secured laterally between the internal walls of the tyre, by positioning the second pair of lugs and the secondary flap of the hook device respectively, against the opposite internal walls of the tyre.
Preferably, helical action caused by rotation of the main rotatable nut lengthens the externally viewable section of the elongated threaded rod causing the second pair of lugs to move away from the secondary flap, thereby forcing the opposite walls of the 0 tyre away from each other.
Conveniently, the hook can thereby be used to spread tyres laterally in order to facilitate repairs once the tyre has been removed from the rim.
o
Claims (34)
1. A device for breaking a tyre bead on a tyre fitted to a wheel and for assisting removal of that tyre from the wheel, which comprises: a framework adapted to fit across the diameter of the wheel; a first transversely spreading member secured to the framework and adapted to be inserted at at least two points adjacent to the bead; and a second laterally spreading member secured to the framework and adapted to push at least one portion of the bead laterally of the wheel, 9* wherein removal of the tyre may be facilitated by the action of the second *o spreading member.
2. A bead breaker and spreader which comprises: a clamping mechanism, provided by two pairs of lugs of which the first pair of lugs is joined to the unattached end of an elongated telescoping rod, within which sits a an elongated threaded rod, the external end of which is perpendicularly attached to 12 a relatively short telescoping rod, a second pair of lugs being joined to its bottom portion, within which bottom portion sits a relatively short threaded rod which is adapted at its lower external end to form or join a vertically adjustable plate, located between the second pair of lugs of the relatively short telescoping rod; wherein the clamping mechanism secures the device across the rim of the wheel and the adjustable plate is then lowered downwards onto the tyre by respective "extension of the elongated and relatively short threaded rods, by helical mechanism (or alternatively pneumatic or hydraulic mechanism) thereby breaking the bead between the tyre and the rim.
3. A bead breaker and spreader as claimed in claim 2, wherein the elongated telescoping rod comprises a rectangular tube-like device which houses an adjustable elongated threaded rod.
4. A bead breaker and spreader as claimed in claim 2 or claim 3, wherein the elongated threaded rod is a rectangular tube-like device of smaller diameter than the elongated telescoping rod.
A bead breaker and spreader as claimed in any one of claims 2 to 4, wherein the elongated threaded rod is joined to a primary internal nut at its internal end, which end is contained within the elongated telescoping rod.
6. A bead breaker and spreader as claimed in any one of claims 2 to 5, wherein the elongated threaded rod comprises a cylindrical hollow space, which hollow 13 space faces a "closed end" of the elongated telescoping rod, wherein a helical section of thread extends down a portion of the length of the hollow and includes a primary internal nut.
7. A bead breaker and spreader as claimed in any one of claims 2 to 6, which includes a main driver means which is a screw-like device comprising a helical section of thread extending down a portion of its length, which threaded section corresponds with the helical thread of the hollow within the elongated threaded rod.
8. A bead breaker and spreader as claimed in claim 7, wherein the main driver means protrudes from the closed end of the elongated telescoping rod and attaches externally and fixably to a main rotatable nut.
9. A bead breaker and spreader as claimed in claim 7 or claim 8, wherein the main **driver means is adapted to rotate such that a helical interaction of the driver means with the cylindrical hollow of the elongated threaded rod causes the elongated threaded rod to move horizontally (as viewed in use) up or down the length of the main driver means within the elongated telescoping rod. 0
10. A bead breaker and spreader as claimed in any one of claims 2 to 9, wherein the externally viewable length of the elongated threaded rod within the elongated telescoping rod is thereby adjustable by external manual rotation of the main rotatable nut and driver means.
11. A bead breaker and spreader as claimed in any one of claims 2 to 10, wherein a relatively short telescoping rod is perpendicularly attached to the elongated threaded rod at its externally viewable end. 14
12. A bead breaker and spreader as claimed in any one of claims 2 to 11, wherein a first pair of lugs attaches to each lateral side of the "closed end" of the elongated telescoping rod, adjacent to and on the inner side of the main rotatable nut.
13. A bead breaker and spreader as claimed in any one of claims 2 to 12, wherein a second pair of lugs attaches to the bottom end (as viewed in use) of the relatively short telescoping rod wherein each lug member is located on either side of a plate.
14. A bead breaker and spreader as claimed in any one of claims 2 to 13, wherein each pair of lugs comprises L-shaped portions parallel to each other within each
15. A bead breaker and spreader as claimed in any one of claims 2 to 14, wherein the lugs are attached at one end such that the free ends of the first pair of lugs S. 0 point towards the free ends of the second pair of lugs.
16. A bead breaker and spreader as claimed in any one of claims 2 to 15, wherein o the clamping mechanism is provided by the elongated telescoping rod being positioned across the diameter of the wheel plate, wherein the second pair of lugs moves towards the first pair of lugs by longitudinal movement of the elongated threaded rod within the elongated telescoping rod, which longitudinal movement occurs via the external rotation of the main rotatable nut.
17. A bead breaker and spreader as claimed in any one of claims 2 to 16, wherein the relatively short telescoping rod comprises a rectangular tube-like device (of shorter length than the elongated telescoping device), which houses a relatively short threaded rod.
18. A bead breaker and spreader as claimed in any one of claims 2 to 17, wherein the relatively short threaded rod is a rectangular tube-like device of smaller diameter than the relatively short telescoping rod.
19. A bead breaker and spreader as claimed in any one of claims 2 to 18, wherein the relatively short threaded rod forms or joins a plate device at its externally visible end, which plate points towards the centre of the elongated threaded rod.
A bead breaker and spreader as claimed in any one of claims 2 to 19, wherein the relatively short threaded rod attaches a secondary internal nut at its internal end, which end is contained within the relatively short telescoping rod.
21. A bead breaker and spreader as claimed in any one of claims 2 to 20, wherein the relatively short threaded rod comprises a cylindrical hollow, which hollow faces the "closed end" of the relatively short telescoping rod, wherein a helical section extends down a portion of the length of the hollow and includes the secondary internal nut.
22. A bead breaker and spreader as claimed in any one of claims 2 to 21, which includes a subsidiary driver means which is a screw-like device comprising a helical section of thread extending down its length, which section corresponds with the helical thread of the hollow within the relatively short threaded rod.
23. A bead breaker and spreader as claimed in claim 22, wherlein the subsidiary driver means protrudes from a "closed end" of the relatively short telescoping rod and attaches externally and fixably to a subsidiary rotatable nut.
24. A bead breaker and spreader as claimed in claim 22 or claim 23, wherein the subsidiary driver means is adapted to rotate and by helical interaction of the 16 driver means with the cylindrical hollow of the relatively short threaded rod causes the relatively short threaded rod to move vertically (as viewed in use) up or down the length of the subsidiary driver means within the relatively short telescoping rod.
A bead breaker and spreader as claimed in any one of claims 2 to 24, wherein the externally viewable length of the relatively short threaded rod (and therefore the relative depression of the plate) is adjustable by external manual rotation of the subsidiary rotatable nut and driver means which produces a helical interaction of the subsidiary driver means with the hollow portion of the relatively short threaded rod, which interaction moves the relatively short threaded rod vertically (as viewed in use) within the elongated telescoping rod.
26. A bead breaker and spreader as claimed in any one of claims 2 to 25, wherein, rotation of the subsidiary rotatable nut and thereby rotation of the subsidiary S" driver means is able to lengthen the externally viewable portion of the relatively short threaded rod by helical action, thereby depressing the plate perpendicularly onto the tyre.
27. A bead breaker and spreader as claimed in any one of claims 2 to 26, wherein Sthe clamping and depressing mechanisms are effected by mechanical means.
28. A bead breaker and spreader as claimed in any one of claims 2 to 27, wherein the clamping and depressing mechanisms are effected by means of a hydraulic device or a pneumatic device.
29. A bead breaker and spreader as claimed in claims 2 to 28, which comprises in addition: 17 a detachable hook which rests over the unattached end of the elongated telescoping rod between the first pair of lugs and with the length of the hook against the under-side of the elongated telescoping rod wherein the second pair of lugs and the bottom portion of the hook sit within the tyre and by extension of the elongated threaded rod, the lugs move away from the hook thereby laterally spreading the tyre walls from each other in order to facilitate repairs.
A bead breaker and spreader as claimed in any one of claims 2 to 29, wherein the hook device comprises a rectangular portion of the same width as the -elongated telescoping rod.
31. A bead breaker and spreader as claimed in any one of claims 2 to 30, wherein the hook comprises a perpendicular flap at one end and a perpendicular flap at e the opposite end which flaps point in opposite directions to each other (hereinafter "primary flap" and the "secondary flap"). *9
32. A bead breaker and spreader as claimed in any one of claims 2 to 31, wherein the primary flap comprises a hole in its centre portion and a short flap, extending at ight angles towards the centre of the hook (as viewed in use).
33. A bead breaker and spreader as claimed in any one of claims 2 to 32, wherein the hook length sits against and along the underside of the elongated telescoping rod, whereby the hole in the primarily flap sits over the main rotatable nut and the secondary flap is situated on the same side as the lugs and plate.
34. A bead breaker and spreader as claimed in any-one of claims 2 to 33, wherein the device is secured laterally between the internal walls of the tyre, by 18 positioning the second pair of lugs and the secondary flap of the hook device respectively, against the opposite internal walls of the tyre. A bead breaker and spreader as claimed in any one of claims 2 to 34, wherein helical action caused by rotation of the main rotatable nut lengthens the externally viewable section of the elongated threaded rod causing the second pair of lugs to move away from the secondary flap, thereby forcing the opposite walls of the tyre away from each other. Peter Henry Hatch by Freehills Carter Smith Beadle Registered Patent Attorneys for the Applicant 23 April 2001
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU38789/01A AU3878901A (en) | 1996-03-26 | 2001-04-23 | Portable tyre bead breaker and spreader |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU48281/96 | 1996-03-26 | ||
| AU38789/01A AU3878901A (en) | 1996-03-26 | 2001-04-23 | Portable tyre bead breaker and spreader |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU48281/96A Division AU4828196A (en) | 1996-03-26 | 1996-03-26 | Portable tyre bead breaker and spreader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU3878901A true AU3878901A (en) | 2001-07-26 |
Family
ID=3725762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU38789/01A Abandoned AU3878901A (en) | 1996-03-26 | 2001-04-23 | Portable tyre bead breaker and spreader |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU3878901A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001282446B2 (en) * | 2000-08-11 | 2007-01-04 | Nds Limited | System and method for pre-encryption of transmitted content |
-
2001
- 2001-04-23 AU AU38789/01A patent/AU3878901A/en not_active Abandoned
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001282446B2 (en) * | 2000-08-11 | 2007-01-04 | Nds Limited | System and method for pre-encryption of transmitted content |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK4 | Application lapsed section 142(2)(d) - no continuation fee paid for the application |