US4047553A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire changing device
Assignee: Individual
•
Filing: 1974-05-02
•
Granted: 1977-09-13
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Expires: 1994-05-02
Abstract
Abstract A tire changing device including a rotatable shaft with means for mounting rise rims thereon for the mounting and demounting of tires from rims which shaft is rotatably powdered and including a pair of vertically shiftable bead breaking units which will engage the tire from the upper side of the rim thereby breaking the bead as the tire is rotated and thereafter the lower of such pairs is brought upwardly to break the lower bead of the mounted tire and for demounting the lower member is brought further upwardly to remove the entire tire from the rim. The second lower pair of elements includes a pair of shaped disc members which will not only break the bead but will also force the tire from the rim. Power means are provided for moving the pair of elements vertically and positioning means are provided to shift these elements such that tires and rims of various sizes may be accommodated.
Inventors
- 👤 Wayne Kotila
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:04
CPC Classifications
B; B60; B60C; B60C25/00; B60C25/01; B60C25/05; B60C25/132
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
260 words
Changing apparatus for tires mounted on drop center rims, comprising, in combination: a shaft and means for causing rotation of said shaft about a first axis; b. means for securing a drop center rim with a tire mounted thereon to said shaft for rotation therewith without axial movement therealong; c. a tool carriage; d. adjusting means operable to reversibly translate said carriage in opposite directions transverse to said first axis; e. feed means for reversibly translating said carriage in opposite directions parallel to said first axis; f. first and second spaced tool holder means fixed to said carriage and projecting toward said axis, the spacing between said tool holder means being greater than the width of the tire; g. a first, bead breaking tool carried on the first tool holder means for engaging said tire and said rim to separate a first bead of the tire from the rim when the feed means operates in a first direction; h. and a second, combined bead breaking and demounting tool carried on the second tool holder means for first separating a second bead of the tire from the rim, then drawing the tire into the drop center of the rim at a first location, and then demounting the tire from the rim at an opposite location when the feed means operates in a second direction; i. said combined tool comprising a first, bead breaking wheel, a second, demounting wheel, and means pivoted to the second tool holder means for supporting said wheels in lateral rotary contact with the tire adjacent the rim.
Claim 2
Dependent Claim
260 words
Changing apparatus for tires mounted on drop center rims, comprising, in combination: a shaft and means for causing rotation of said shaft about a first axis; b. means for securing a drop center rim with a tire mounted thereon to said shaft for rotation therewith without axial movement therealong; c. a tool carriage; d. adjusting means operable to reversibly translate said carriage in opposite directions transverse to said first axis; e. feed means for reversibly translating said carriage in opposite directions parallel to said first axis; f. first and second spaced tool holder means fixed to said carriage and projecting toward said axis, the spacing between said tool holder means being greater than the width of the tire; g. a first, bead breaking tool carried on the first tool holder means for engaging said tire and said rim to separate a first bead of the tire from the rim when the feed means operates in a first direction; h. and a second, combined bead breaking and demounting tool carried on the second tool holder means for first separating a second bead of the tire from the rim, then drawing the tire into the drop center of the rim at a first location, and then demounting the tire from the rim at an opposite location when the feed means operates in a second direction; i. said combined tool comprising a first, bead breaking wheel, a second, demounting wheel, and means pivoted to the second tool holder means for supporting said wheels in lateral rotary contact with the tire adjacent the rim.
Claim 3
Dependent Claim
25 words
Apparatus according to claim 1 in which said bead breaking wheel is mounted for angular movement of its axis with respect to the last-named means.
Claim 4
Dependent Claim
188 words
A tire mounting and demounting unit including: a. a longitudinally extending mounting base; b. a tire rim mounting member arranged in generally horizontal overlying relation to said base and being rotatable with respect thereto; c. a generally vertical carrier element arranged for longitudinal movement on said base for shifting the same with respect to said rim mounting member; e. said carrier element including a vertically shiftable member; f. bead breaking elements mounted on said vertically shiftable member including an upper bead breaking element vertically and rotatably positioned on said shiftable member and a lower pair of bead breaking elements which upper element and said lower pair of bead breaking elements will engage the opposite beads of a tire mounted on said tire mounting rim; g. a mounting shaft extending from said vertically shiftable member; h. a mounting bar arranged on said shaft; i. said lower pair of bead breaking elements being arranged for rotation on the respective ends of said bar; and, j. means for shifting said vertically shiftable member to bring said bead elements into contact with the tire for breaking the bead thereof from the rim.
Claim 5
Dependent Claim
188 words
A tire mounting and demounting unit including: a. a longitudinally extending mounting base; b. a tire rim mounting member arranged in generally horizontal overlying relation to said base and being rotatable with respect thereto; c. a generally vertical carrier element arranged for longitudinal movement on said base for shifting the same with respect to said rim mounting member; e. said carrier element including a vertically shiftable member; f. bead breaking elements mounted on said vertically shiftable member including an upper bead breaking element vertically and rotatably positioned on said shiftable member and a lower pair of bead breaking elements which upper element and said lower pair of bead breaking elements will engage the opposite beads of a tire mounted on said tire mounting rim; g. a mounting shaft extending from said vertically shiftable member; h. a mounting bar arranged on said shaft; i. said lower pair of bead breaking elements being arranged for rotation on the respective ends of said bar; and, j. means for shifting said vertically shiftable member to bring said bead elements into contact with the tire for breaking the bead thereof from the rim.
Claim 6
Dependent Claim
22 words
The structure set forth in claim 3 and said lower set of bead breaking elements including a pair of dish shaped members.
Claim 7
Dependent Claim
29 words
The structure set forth in claim 4 and one of said bead breaking elements being rotatably mounted on said bar to permit rotation thereof about a generally horizontal axis.
Claim 8
Dependent Claim
24 words
The structure set forth in claim 3 and said mounting bar being offset angularly from said mounting shaft at an angle other than normal.
Claim 9
Dependent Claim
18 words
The structure set forth in claim 6 and said mounting bar being arranged for rotation on said shaft.
Claim 10
Dependent Claim
21 words
The structure set forth in claim 7 and stop means arranged to control the rotation of said bar on said shaft.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |