US3858735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire manipulating apparatus
Assignee: Iowa Mold Tooling Co Inc
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Filing: 1973-04-16
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Granted: 1975-01-07
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Expires: 1993-04-16
Abstract
Abstract A tire changing fixture adapted to be mounted on a boom carried by a vehicle for use in changing or repairing extremely large tires of the type frequently weighing several thousand pounds. The fixture includes a jaw assembly having opposed gripping surfaces and motors for moving the surfaces towards and away from each other. The fixture also includes a plurality of pivots in a mounting device for the jaw assembly, the pivots being three in number and defining pivotal axes which are mutually transverse to each other so that the jaw assembly can be capable of substantial universal movement on the end of a boom to which it may be secured. Additional motors are provided for pivoting the jaw assembly about each of the pivot axes.
Inventors
- 👤 Francis L Zrostlik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:27
CPC Classifications
B; B60; B60P; B60P3/00; B60P3/14; B60C; B60C25/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
371 words
A tire changing fixture adapted to be mounted on a movable boom for use in the repair or changing of extremely large and heavy tires, comprising means defining a variable width jaw assembly having opposed gripping surfaces adapted to be moved toward and away from each other for gripping a tire about its cylindrical periphery; first motor means connected to said jaw assembly gripping surfaces and selectively operable to move said gripping surfaces toward and away from each other; mounting means mounting said jaw assembly, said mounting means including a first pivot adapted to be connected to a movable boom so that said jaw assembly may be rotated about a first pivot axis coincident with said first pivot; means on said mounting means defining a second pivot axis for said jaw assembly generally transverse to said first pivot axis; said mounting means including means mounting said jaw assembly for pivotal movement about said second pivot axis; second motor means selectively operable to pivot said jaw assembly about said second pivot axis; means on said mounting means defining a third pivot axis for said jaw assembly generally transverse to both said first and second pivot axes; said mounting means including means mounting said jaw assembly for pivotal movement about said third pivot axis; and third motor means selectively operable to pivot said jaw assembly about said third pivot axis whereby said jaw assembly may be mounted for substantially universal movement on a boom to facilitate the gripping and relocating of a tire during a tire changing or repair operation; said variable width jaw assembly including at least a pair of generally oppositely extending tubular members secured to said mounting means, and at least a pair of L-shaped jaws, one for each of said tubular members and telescopingly received therein, said gripping surfaces being defined by the bights of said L-shaped jaws; and said motor means comprising at least a pair of hydraulic cylinders, one for each of said tubular members, and located within a respective one of said tubular members, each hydraulic cylinder being operatively connected to its tubular members and the associated L-shaped jaw whereby operation of said hydraulic cylinders will move said gripping surfaces toward and away from each other.
Claim 2
Dependent Claim
371 words
A tire changing fixture adapted to be mounted on a movable boom for use in the repair or changing of extremely large and heavy tires, comprising means defining a variable width jaw assembly having opposed gripping surfaces adapted to be moved toward and away from each other for gripping a tire about its cylindrical periphery; first motor means connected to said jaw assembly gripping surfaces and selectively operable to move said gripping surfaces toward and away from each other; mounting means mounting said jaw assembly, said mounting means including a first pivot adapted to be connected to a movable boom so that said jaw assembly may be rotated about a first pivot axis coincident with said first pivot; means on said mounting means defining a second pivot axis for said jaw assembly generally transverse to said first pivot axis; said mounting means including means mounting said jaw assembly for pivotal movement about said second pivot axis; second motor means selectively operable to pivot said jaw assembly about said second pivot axis; means on said mounting means defining a third pivot axis for said jaw assembly generally transverse to both said first and second pivot axes; said mounting means including means mounting said jaw assembly for pivotal movement about said third pivot axis; and third motor means selectively operable to pivot said jaw assembly about said third pivot axis whereby said jaw assembly may be mounted for substantially universal movement on a boom to facilitate the gripping and relocating of a tire during a tire changing or repair operation; said variable width jaw assembly including at least a pair of generally oppositely extending tubular members secured to said mounting means, and at least a pair of L-shaped jaws, one for each of said tubular members and telescopingly received therein, said gripping surfaces being defined by the bights of said L-shaped jaws; and said motor means comprising at least a pair of hydraulic cylinders, one for each of said tubular members, and located within a respective one of said tubular members, each hydraulic cylinder being operatively connected to its tubular members and the associated L-shaped jaw whereby operation of said hydraulic cylinders will move said gripping surfaces toward and away from each other.
Claim 3
Dependent Claim
28 words
Apparatus according to claim 1 wherein there are three said tubular members, said tubular members being directed generally radially of one of said second and third pivot axes.
Claim 4
Dependent Claim
31 words
Apparatus according to claim 2 wherein the bights of each of said L-shaped jaws are provided with inwardly directed studs for gripping a tire during a tire changing or repair operation.
Claim 5
Dependent Claim
63 words
Apparatus according to claim 1 wherein said means defining a second pivot axis includes an elongated, generally vertically arranged shaft journalled for rotation in a portion of said mounting means, said shaft mounting a gear; and said second motor means comprises a hydraulic motor mounted on said mounting means and having a gear on its output shaft, said gears being in meshing engagement.
Claim 6
Dependent Claim
21 words
Apparatus according to claim 4 wherein said means defining a third pivot axis is secured to said shaft for rotation therewith.
Claim 7
Dependent Claim
317 words
A tire changing fixture adapted to be mounted on a movable boom for use in the repair or changing of extremely large and heavy tires, comprising means defining a variable width jaw assembly having opposed gripping surfaces adapted to be moved toward and away from each other for gripping a tire about its cylinderical periphery; first motor means connected to said jaw assembly gripping surfaces and selectively operable to move said gripping surfaces toward and away from each other; mounting means mounting said jaw assembly, said mounting means includiNg a first pivot adapted to be connected to a movable boom so that said jaw assembly may be rotated about a first pivot axis coincident with said first pivot; means on said mounting means defining a second pivot axis for said jaw assembly generally transverse to said first pivot axis; said mounting means including means mounting said jaw assembly for pivotal movement about said second pivot axis; second motor means selectively operable to pivot said jaw assembly about said second pivot axis; means on said mounting means defining a third pivot axis for said jaw assembly generally transverse to both said first and second pivot axes; said mounting means including means mounting said jaw assembly for pivotal movement about said third pivot axis; and third motor means selectively operable to pivot said jaw assembly about said third pivot axis whereby said jaw assembly may be mounted for substantially universal movement on a boom to facilitate the gripping and relocating of a tire during a tire changing or repair operation; said means defining a third pivot axis including an internal ring gear journalled for rotation about said third pivot axis; said jaw assembly being secured to said ring gear, and said third motor means comprises a hydraulic motor secured to said mounting means and having an output shaft bearing a gear in meshing engagement with said internal ring gear.
Claim 8
Dependent Claim
317 words
A tire changing fixture adapted to be mounted on a movable boom for use in the repair or changing of extremely large and heavy tires, comprising means defining a variable width jaw assembly having opposed gripping surfaces adapted to be moved toward and away from each other for gripping a tire about its cylinderical periphery; first motor means connected to said jaw assembly gripping surfaces and selectively operable to move said gripping surfaces toward and away from each other; mounting means mounting said jaw assembly, said mounting means includiNg a first pivot adapted to be connected to a movable boom so that said jaw assembly may be rotated about a first pivot axis coincident with said first pivot; means on said mounting means defining a second pivot axis for said jaw assembly generally transverse to said first pivot axis; said mounting means including means mounting said jaw assembly for pivotal movement about said second pivot axis; second motor means selectively operable to pivot said jaw assembly about said second pivot axis; means on said mounting means defining a third pivot axis for said jaw assembly generally transverse to both said first and second pivot axes; said mounting means including means mounting said jaw assembly for pivotal movement about said third pivot axis; and third motor means selectively operable to pivot said jaw assembly about said third pivot axis whereby said jaw assembly may be mounted for substantially universal movement on a boom to facilitate the gripping and relocating of a tire during a tire changing or repair operation; said means defining a third pivot axis including an internal ring gear journalled for rotation about said third pivot axis; said jaw assembly being secured to said ring gear, and said third motor means comprises a hydraulic motor secured to said mounting means and having an output shaft bearing a gear in meshing engagement with said internal ring gear.
Claim 9
Dependent Claim
64 words
Apparatus according to claim 6 wherein said internal ring gear includes a bearing race extending about its radially outer periphery; and said mounting means comprises a circular member having an internal bearing race; said internal ring gear being received in said circular member; and a plurality of bearings interposed between said circular member and said internal ring gear and engaging both said bearing races.
Claim 10
Dependent Claim
79 words
Apparatus according to claim 7 wherein said means defining a second pivot axis includes an elongated, generally vertically arranged shaft journalled for rotation in a portion of said mounting means, said shaft mounting a gear; and said second motor means comprises a hydraulic motor mounted on said mounting means and having a gear on its output shaft, said gears being in meshing engagement; said circular member being secured to said shaft for rotation therewith about said second pivot axis.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-06 | 1978-07-08 | 1979-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-06 | 1982-07-08 | 1983-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-06 | 1986-07-08 | 1987-01-07 | $7700.00 | Window Closed / Lapsed |