Patent JPS62173545A successfully refreshed from Google Patents.
US3584673A
Expired / Lapsed
US
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Method and apparatus for detreading tires
Assignee: TIRE EQUIPMENT Inc
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Filing: 1968-09-13
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Granted: 1971-06-15
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Expires: 1988-09-13
Abstract
Abstract This invention relates to a method and apparatus for sizing and modifying the circumferential surface of a tirelike object by removal of at least part of the surface material. The invention is particularly applicable to a method and apparatus for sizing and modifying the variable circumferential surface of a tire in a substantially completely automated manner to remove tread rubber therefrom. The method is accomplished by the apparatus in a series of programmed sequential steps in response to initiation by an operator.
Inventors
- 👤 Walther Ernst Fritz Lehmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:08
CPC Classifications
B; B29; B29B; B29B17/00; B29B17/02; B29B17/0206; B29D; B29D30/00; B29D30/06; B29D30/52; B29D30/54; B29D2030/541; B29L; B29L2030/00; Y; Y02; Y02W; Y02W30/00; Y02W30/50; Y02W30/62
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
113 words
Apparatus for sizing and removing material from the circumferential surface of a circular object comprising a frame, cutting means supported on said frame, an indexing table supported on said frame in spaced relationship with said cutting means, means mounted on said indexing table for mounting the object to be sized and cut, means for moving the indexing table toward and away from and in an arc with respect to said cutting means, a template for providing a contoured arcuate path of travel for said indexing table and means mounted on said frame for slidable movement with respect to said template for adjusting the contoured path of travel provided thereby for said indexing table.
Claim 2
Dependent Claim
113 words
Apparatus for sizing and removing material from the circumferential surface of a circular object comprising a frame, cutting means supported on said frame, an indexing table supported on said frame in spaced relationship with said cutting means, means mounted on said indexing table for mounting the object to be sized and cut, means for moving the indexing table toward and away from and in an arc with respect to said cutting means, a template for providing a contoured arcuate path of travel for said indexing table and means mounted on said frame for slidable movement with respect to said template for adjusting the contoured path of travel provided thereby for said indexing table.
Claim 3
Dependent Claim
15 words
Apparatus as defined in claim 1 wherein the cutting means is an endless rotatable knife.
Claim 4
Dependent Claim
156 words
Apparatus for sizing and removing material from the circumferential surface of a circular object comprising a frame, cutting means supported on said frame, an indexing table mounted on the frame opposite the cutting means, means mounted on the indexing table for supporting the circular object being sized and cut, means for moving said indexing table toward and away from and in an arc with respect to said cutting means, a template for defining the arcuate path followed by said indexing table, sensing means including a projectable and retractable arm and a downwardly projecting plate mounted on said frame in proximity to said adjustable template, said arm being mounted for lateral movement to contact the side of the object to be sized and said plate being mounted for vertical movement simultaneously with the movement of said arm to engage the template and adjust the arcuate path provided thereby in accordance with the width sensed by said arm.
Claim 5
Dependent Claim
156 words
Apparatus for sizing and removing material from the circumferential surface of a circular object comprising a frame, cutting means supported on said frame, an indexing table mounted on the frame opposite the cutting means, means mounted on the indexing table for supporting the circular object being sized and cut, means for moving said indexing table toward and away from and in an arc with respect to said cutting means, a template for defining the arcuate path followed by said indexing table, sensing means including a projectable and retractable arm and a downwardly projecting plate mounted on said frame in proximity to said adjustable template, said arm being mounted for lateral movement to contact the side of the object to be sized and said plate being mounted for vertical movement simultaneously with the movement of said arm to engage the template and adjust the arcuate path provided thereby in accordance with the width sensed by said arm.
Claim 6
Dependent Claim
405 words
Apparatus for sizing and removing material from the circumferential surface of a tire comprising a frame, an endless rotatable knife supported on said frame, an indexing table including a cam follower with a switch located thereon supported on said frame in spaced relationship with said endless rotatable knife, a hub mounted on said indexing table to support the tire to be sized and cut, pneumatic means for moving the indexing table toward and away from said endless rotatable knife, a motor including a driven sprocket mounted on said indexing table for moving said indexing table in an arc with respect to said endless rotatable knife, indexing table support means having an arcuate trailing edge located on said frame below said indexing table and including a sprocket chain disposed along the arcuate trailing edge which cooperates with said driven sprocket to guide said indexing table in an arc with respect to said cutting means, an adjustable winged template, mounted on said indexing table support means and extending upwardly above said indexing table, a first pneumatically projectable and rEtractable sensor including a switch located above said endless rotatable knife, a second sensor including a projectable and retractable arm and a vertically movable downwardly projecting plate located on said frame in contact with said winged template, and including a switch and driving means to actuate said arm and said plate and switches to limit the vertical movement of said plate, said arm being adapted to lateral adjustment to come into contact with a sidewall of the tire to be sized and cut and said plate being adapted for upward vertical movement simultaneously with the lateral adjustment of said arm to determine generally the size of the object to be sized and cut, motor driven screw means located on said indexing table adapted to move said indexing table through a given distance in proximity with said endless rotatable knife to determine the depth of the cut on the object to be sized and cut, driving means associated with said plate to drive said plate upwardly independently of movement of said arm and to allow the wings of said template to be adjusted inwardly when said cam follower is in contact with said template to determine the finite size of said object to be sized and cut, said template providing a contoured path of travel for said indexing table that is patterned on the tire width after sizing is completed.
Claim 7
Dependent Claim
405 words
Apparatus for sizing and removing material from the circumferential surface of a tire comprising a frame, an endless rotatable knife supported on said frame, an indexing table including a cam follower with a switch located thereon supported on said frame in spaced relationship with said endless rotatable knife, a hub mounted on said indexing table to support the tire to be sized and cut, pneumatic means for moving the indexing table toward and away from said endless rotatable knife, a motor including a driven sprocket mounted on said indexing table for moving said indexing table in an arc with respect to said endless rotatable knife, indexing table support means having an arcuate trailing edge located on said frame below said indexing table and including a sprocket chain disposed along the arcuate trailing edge which cooperates with said driven sprocket to guide said indexing table in an arc with respect to said cutting means, an adjustable winged template, mounted on said indexing table support means and extending upwardly above said indexing table, a first pneumatically projectable and rEtractable sensor including a switch located above said endless rotatable knife, a second sensor including a projectable and retractable arm and a vertically movable downwardly projecting plate located on said frame in contact with said winged template, and including a switch and driving means to actuate said arm and said plate and switches to limit the vertical movement of said plate, said arm being adapted to lateral adjustment to come into contact with a sidewall of the tire to be sized and cut and said plate being adapted for upward vertical movement simultaneously with the lateral adjustment of said arm to determine generally the size of the object to be sized and cut, motor driven screw means located on said indexing table adapted to move said indexing table through a given distance in proximity with said endless rotatable knife to determine the depth of the cut on the object to be sized and cut, driving means associated with said plate to drive said plate upwardly independently of movement of said arm and to allow the wings of said template to be adjusted inwardly when said cam follower is in contact with said template to determine the finite size of said object to be sized and cut, said template providing a contoured path of travel for said indexing table that is patterned on the tire width after sizing is completed.
Claim 8
Dependent Claim
26 words
The apparatus as defined in claim 4 including a tire dressing means mounted in the frame housing below said endless rotatable knife and above said template.
Claim 9
Dependent Claim
29 words
The apparatus as defined in claim 4 wherein said indexing table support means includes pneumatic means to move said support means towards and away from the downwardly projecting plate.
Claim 10
Dependent Claim
41 words
The apparatus as defined in claim 4 wherein said indexing table includes a bearing housing cooperating with a post disposed on the indexing table support means to provide a pivoting point for said indexing table with respect to said support means.
Claim 11
Dependent Claim
20 words
The apparatus as defined in claim 4 including motor means located on said frame for driving the endless rotatable knife.
Claim 12
Dependent Claim
12 words
The apparatus in claim 4 including motor means to rotate said hub.
Claim 13
Independent Claim
193 words
A method for sizing and cutting material from the circumferential surface of a tire comprising mounting and inflating a tire on a tire supporting means, determining the outside diameter of the tire, determining the width of the tire by bringing an extending and traversing arm into contact with the sidewall of the tire while simultaneously adjusting a variable contour template to provide a basic adjustment of the tire size, traversing the tire in a semicircular path with respect to said cutting means, bring the tire forward at an angle less than 90* from the center line of said cutting means while simultaneously adjusting the template for a finite setting and subsequently retracting the tire, adjusting the relationship of the tire to the cutting means and determining the depth of cut, moving the tire into the cutting means, rotating the tire and cutting surface rubber from said tire while traversing and following the contour of the template until reaching a predetermined limit, and retracting said tire from said cutting means and traversing said tire to the centerline of said cutting means while simultaneously deflating the tire to release it from said tire supporting means.
Claim 14
Independent Claim
193 words
A method for sizing and cutting material from the circumferential surface of a tire comprising mounting and inflating a tire on a tire supporting means, determining the outside diameter of the tire, determining the width of the tire by bringing an extending and traversing arm into contact with the sidewall of the tire while simultaneously adjusting a variable contour template to provide a basic adjustment of the tire size, traversing the tire in a semicircular path with respect to said cutting means, bring the tire forward at an angle less than 90* from the center line of said cutting means while simultaneously adjusting the template for a finite setting and subsequently retracting the tire, adjusting the relationship of the tire to the cutting means and determining the depth of cut, moving the tire into the cutting means, rotating the tire and cutting surface rubber from said tire while traversing and following the contour of the template until reaching a predetermined limit, and retracting said tire from said cutting means and traversing said tire to the centerline of said cutting means while simultaneously deflating the tire to release it from said tire supporting means.
Claim 15
Dependent Claim
23 words
The method as defined in claim 10 wherein the depth of the cut is determined before adjusting the template for the finite setting.
Claim 16
Independent Claim
132 words
A method of detreading a tire with the aid of a continuous knife including the steps of: a. spinning said tire around its rotational axis, b. moving the cutting portion of said knife in a single fixed plane at a greater linear velocity than the peripheral velocity of said tire, c. making said two velocities perpendicular to each other whereby the cutting edge of said knife moves in a transverse direction with respect to the axis of rotation of said tire, d. rotating said tire around an azimuth axis perpendIcular to said rotational axis, and e. simultaneously changing the position of said tire with respect to said azimuth axis and with respect to said fixed plane and said knife along a fixed, predetermined azimuth locus corresponding to the size of said tire.
Claim 17
Independent Claim
132 words
A method of detreading a tire with the aid of a continuous knife including the steps of: a. spinning said tire around its rotational axis, b. moving the cutting portion of said knife in a single fixed plane at a greater linear velocity than the peripheral velocity of said tire, c. making said two velocities perpendicular to each other whereby the cutting edge of said knife moves in a transverse direction with respect to the axis of rotation of said tire, d. rotating said tire around an azimuth axis perpendIcular to said rotational axis, and e. simultaneously changing the position of said tire with respect to said azimuth axis and with respect to said fixed plane and said knife along a fixed, predetermined azimuth locus corresponding to the size of said tire.
Claim 18
Dependent Claim
21 words
The method as defined in claim 12 wherein the cutting portion of the knife is moved in a cylindrical fixed plane.
Claim 19
Dependent Claim
35 words
The method as defined in claim 12 wherein the surface of the tire is continuously dressed after cutting by a dressing means lying in a plane perpendicular to the axis of rotation of the tire.
Claim 20
Dependent Claim
89 words
The method as defined in claim 12, which also includes the additional steps of automatically inflating said tire to a predetermined pressure upon mounting of said tire on said rotational axis and simultaneously measuring the actual outer diameter of said tire, automatically positioning said tire with respect to said azimuth axis as a function of said actual diameter of said tire and the size of said tire, and altering said position prior to the beginning of said detreading for fixing the degree of detreading desired on any given tire.
Claim 21
Dependent Claim
73 words
The method as defined in claim 15, which also includes the additional steps of automatically starting and stopping said detreading at predetermined first and second azimuth positions of said tire respectively, automatically stopping the rotation of said tire around said rotational axis after reaching said second azimuth position and also automatically deflating said tire, and thereafter automatically returning said rotational axis to its first azimuth position for restarting said process with another tire.
Claim 22
Independent Claim
263 words
A method of detreading a tire including the steps of rotating said tire around its first, normal axis of rotation, simultaneously rotating said tire around a second azimuth axis perpendicular to said first axis and lying in a first plane passing through a midportion of the circumference of said tire and bisecting said tire, said second axis normally passing substantially through the geometric center of a transverse bead-to-bead cross section of said tire produced by a second plane passing through said first axis and being normal to said azimuth axis and also passing through a line defining the position of a continuous cutting edge, whereby said cutting edge forms a substantially tangential contact with the outer surface of said tire, continuously moving said cutting edge along said line and in a substantially perpendicular direction to said azimuth axis and also in said second plane, whereby said edge continuously travels in a transverse direction to the outer circumferential surface of said tire, and varying the position of said tire with respect to said azimuth axis in a predetermined manner, and along a fixed locus, as said tire is rotated around said azimuth axis whereby the rotation of said tire around said first and azimuth axes, displacement of said tire with respect to said azimuth axis and the continuous transverse movement of said cutting edge cuts a continuous variable thickness ribbon from the outer elastomeric layer of said tire, said cutting progressing from one side, across the crown, and to the other side of said tire as said tire is rotated around said azimuth axis.
Claim 23
Independent Claim
263 words
A method of detreading a tire including the steps of rotating said tire around its first, normal axis of rotation, simultaneously rotating said tire around a second azimuth axis perpendicular to said first axis and lying in a first plane passing through a midportion of the circumference of said tire and bisecting said tire, said second axis normally passing substantially through the geometric center of a transverse bead-to-bead cross section of said tire produced by a second plane passing through said first axis and being normal to said azimuth axis and also passing through a line defining the position of a continuous cutting edge, whereby said cutting edge forms a substantially tangential contact with the outer surface of said tire, continuously moving said cutting edge along said line and in a substantially perpendicular direction to said azimuth axis and also in said second plane, whereby said edge continuously travels in a transverse direction to the outer circumferential surface of said tire, and varying the position of said tire with respect to said azimuth axis in a predetermined manner, and along a fixed locus, as said tire is rotated around said azimuth axis whereby the rotation of said tire around said first and azimuth axes, displacement of said tire with respect to said azimuth axis and the continuous transverse movement of said cutting edge cuts a continuous variable thickness ribbon from the outer elastomeric layer of said tire, said cutting progressing from one side, across the crown, and to the other side of said tire as said tire is rotated around said azimuth axis.
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) | 1974-06-14 | 1974-12-14 | 1975-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-14 | 1978-12-14 | 1979-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-14 | 1982-12-14 | 1983-06-15 | $7700.00 | Window Closed / Lapsed |