US3635610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire conditioning apparatus
Assignee: National Standard Co
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Filing: 1969-12-03
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Granted: 1972-01-18
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Expires: 1989-12-03
Abstract
Abstract Tire conditioning apparatus is provided for removing flat spots and other surface irregularities from tires preliminary to recapping or truing them. The apparatus comprises a frame, drive rolls mounted in the bottom of the frame for supporting and rotating the tire, pressure assembly arranged to press the tire against the drive rolls with a predetermined amount of pressure, and heating means located a spaced distance from the tire for heating it as it is rotated under pressure. This removes the stresses and permits the tire to assume its normal shape.
Inventors
- 👤 Walter Dennis Hall
- 👤 Malcolm Jean Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:40
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/0601; B29D30/0633; B29D2030/0634; B29D2030/0635; B29D2030/0642
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
117 words
Tire conditioning apparatus comprising: a. an exterior frame dimensioned to receive a tire edgewise, b. drive roll means mounted across the bottom of the frame for supporting the tire in an upright, freely rotatable position and for rotating the tire at a predetermined rotational speed, c. pressure roll means mounted on the frame above the tire, d. pressure roll drive mEans connected to the pressure roll for reciprocating it between an advanced operating position where it exerts a predetermined pressure against the tire, pressing it against the drive rolls and a retracted loading position remote from the tire, and e. tire heating means positioned for heating the tire to a predetermined temperature as it rotates under pressure.
Claim 2
Dependent Claim
117 words
Tire conditioning apparatus comprising: a. an exterior frame dimensioned to receive a tire edgewise, b. drive roll means mounted across the bottom of the frame for supporting the tire in an upright, freely rotatable position and for rotating the tire at a predetermined rotational speed, c. pressure roll means mounted on the frame above the tire, d. pressure roll drive mEans connected to the pressure roll for reciprocating it between an advanced operating position where it exerts a predetermined pressure against the tire, pressing it against the drive rolls and a retracted loading position remote from the tire, and e. tire heating means positioned for heating the tire to a predetermined temperature as it rotates under pressure.
Claim 3
Dependent Claim
29 words
The tire conditioning apparatus of claim 1 including tire guide means mounted along the sidewalls of the frame for maintaining the tire in an upright position as it rotates.
Claim 4
Dependent Claim
38 words
The tire conditioning apparatus of claim 1 wherein the drive roll means includes a pair of spaced drive rolls, each having a central, annular ridge and outwardly tapered peripheral surfaces for self-centering the tire as it rotates thereon.
Claim 5
Dependent Claim
57 words
The tire conditioning apparatus of claim 1 wherein the pressure roll means comprises a pair of arms extending from the rear wall of the frame in the direction of the tire, pivotal mounting means mounting the outer end of the arms to the rear wall, and a pressure roll journaled between the inner ends of the arms.
Claim 6
Dependent Claim
44 words
The apparatus of claim 4 wherein the tire heating means is mounted on the arms a spaced distance therefrom in the direction away from the tire, thereby spacing the heating means from the tire when the pressure roll is in contact with the same.
Claim 7
Dependent Claim
16 words
The apparatus of claim 4 wherein the pressure roll drive means comprises a double-acting, fluid-operated cylinder.
Claim 8
Dependent Claim
54 words
The apparatus of claim 4 wherein the pressure roll drive means comprises a single-acting, fluid-operated cylinder operative to drive the pressure roll means to its advanced position against the tire, and spring means coupled to the pressure roll means for returning the pressure roll means to its retracted position upon inactivation of the cylinder.
Claim 9
Dependent Claim
21 words
The apparatus of claim 1 wherein the tire heating means comprises electric heating means and an electric circuit including the same.
Claim 10
Dependent Claim
63 words
The tire conditioning apparatus of claim 1 wherein the drive roll means comprises at least one drive roll coupled to an electric motor in an electric circuit with an ammeter and the pressure roll drive means includes control means for adjusting the pressure developed thereby, the control means being adjustable to adjust the pressure to an optimum level indicated by the ammeter reading.
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |