Patent US3844871A successfully refreshed from Google Patents.
US3844871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tire building machine
Assignee: Uniroyal Inc
•
Filing: 1973-02-05
•
Granted: 1974-10-29
•
Expires: 1993-02-05
Abstract
Abstract An electronically digitally controlled tire building machine having a pair of supply mechanisms for supplying a pair of continuous strips of breaker material of the same or different physical characteristics, a pair of severing devices which sever the strip into strip portions, a pair of transfer mechanisms for transporting the severed strip portions, respectively, to a pair of spaced locations, and a single breaker building drum which is intermittently shiftable along a fixed axis between a number of stopped positions two of which coincide with said spaced locations, respectively. After the breaker plies are built up on the building drum at said pair of spaced locations, a tread applicator mechanism, located at a third one of the stopped positions, applies a strip of tread material around the breaker ply assembly. In another of the stopped positions of the building drum a transfer ring cooperates with the drum for transferring a completed breaker-tread assembly from the building drum onto a carcass supported on a carcass support member.
Inventors
- 👤 W Habert
- 👤 W Baumgartner
- 👤 R Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:42
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/08; B29D30/20; B29D30/30; B29D30/3007; B29D30/24; B29D2030/241
Claims Analysis
Total Claims: 50
Claim 1
Independent Claim
312 words
Apparatus for building a pneumatic tire, the apparatus comprising: a rotatably driven breaker building drum; at least one rotatably driven breaker applicator wheel spaced radially from and adjacent to said drum; breaker conveyor means for advancing a continuous breaker strip to and upon the periphery of said wheel; breaker strip severing means for severing from said breaker strip a leading breaker on said wheel to be transferred to said drum; electronic digital control means operatively coupled with said wheel and drum for rotatably indexing said wheel and drum to respective tangentially corresponding reference positions relative to one another at which transfer to said drum of a leading edge of said breaker on said wheel is to be initiated, said drum at its respective reference position including means thereon for effecting transfer of said leading breaker edge from said wheel to said drum, said control means including different drive means operatively associated with said wheel and drum respectively for rotating each simultaneously with one another after transfer of said leading breaker edge to said drum to complete the transfer of the entire breaker to said drum, one of said drive means being operatively associated with said drum for varying the rate of rotation thereof during breakertransfer; and pulse-generating feed-back means operatively coupled with said wheel, said drum and said control means for relaying intelligence to said control means, via a continuous transmission of discrete pulses which are related to respective peripheral increments of said wheel and drum, firstly, prior to breaker-transfer, of the course and completion of indexing of said wheel and drum to their respective tangentially corresponding reference positions and secondly, during breakertransfer, of the relative peripheral speeds of said wheel and drum so that said control means in response via pulse-rate comparison effects pulse-regulated variable rotation of said drum at a peripheral speed corresponding to the peripheral speed of said wheel.
Claim 2
Dependent Claim
312 words
Apparatus for building a pneumatic tire, the apparatus comprising: a rotatably driven breaker building drum; at least one rotatably driven breaker applicator wheel spaced radially from and adjacent to said drum; breaker conveyor means for advancing a continuous breaker strip to and upon the periphery of said wheel; breaker strip severing means for severing from said breaker strip a leading breaker on said wheel to be transferred to said drum; electronic digital control means operatively coupled with said wheel and drum for rotatably indexing said wheel and drum to respective tangentially corresponding reference positions relative to one another at which transfer to said drum of a leading edge of said breaker on said wheel is to be initiated, said drum at its respective reference position including means thereon for effecting transfer of said leading breaker edge from said wheel to said drum, said control means including different drive means operatively associated with said wheel and drum respectively for rotating each simultaneously with one another after transfer of said leading breaker edge to said drum to complete the transfer of the entire breaker to said drum, one of said drive means being operatively associated with said drum for varying the rate of rotation thereof during breakertransfer; and pulse-generating feed-back means operatively coupled with said wheel, said drum and said control means for relaying intelligence to said control means, via a continuous transmission of discrete pulses which are related to respective peripheral increments of said wheel and drum, firstly, prior to breaker-transfer, of the course and completion of indexing of said wheel and drum to their respective tangentially corresponding reference positions and secondly, during breakertransfer, of the relative peripheral speeds of said wheel and drum so that said control means in response via pulse-rate comparison effects pulse-regulated variable rotation of said drum at a peripheral speed corresponding to the peripheral speed of said wheel.
Claim 3
Dependent Claim
58 words
Apparatus as claimed in claim 1, wherein said pulse-generating feed-back means includes switching means operatively associated with said wheel and drum, during breaker-transfer, for effecting rotation of said drum in direct response to the rotation of said wheel, whereby the rate of rotation of said wheel effects the rate of rotation of said drum only during breaker transfer.
Claim 4
Dependent Claim
51 words
Apparatus as claimed in claim 1 including means operatively coupled with said digital control means and said severing means for activating and deactivating the latter at predetermined intervals such that each leading breaker is cut-to-length on said wheel and presents an extent corresponding substantially to the circumferential extent of said drum.
Claim 5
Dependent Claim
52 words
Apparatus as claimed in claim 3 including stop means operatively associated with said wheel for stopping the rotation of the latter; and means operatively coupled with said digital control means and said stop means for activating and deactivating said stop means at said predetermined intervals to permit operation of said severing means.
Claim 6
Dependent Claim
50 words
Apparatus as claimed in claim 4 wherein said stop means includes, at least in part, an endwise displaceable position-referencing shot-pin operatively associated with, and offset relative to the axis of rotation of, said wheel, said wheel having a corresponding receptacle aligned axially with said shot-pin for reception of the latter.
Claim 7
Dependent Claim
72 words
Apparatus as claimed in claim 4 including breaker clamping means aDjacent the periphery of said wheel for pressing a portion of said breaker strip against the periphery of said wheel during operation of said severing means; and means operatively coupled with said digital control means and said breaker clamping means for activating and deactivating said breaker clamping means at said predetermined intervals into and out of clamping association with said breaker strip.
Claim 8
Dependent Claim
129 words
Apparatus as claimed in claim 6 wherein said breaker clamping means includes an arcuate stripper plate and a conformingly arcuate magnetic plate displaceably superposed upon said stripper plate, said stripper and magnetic plates having a common axis of pivotal articulation to permit movement thereof into and out of pressing relation with said breaker strip and wheel, said magnetic plate including a plurality of magnetic elements extending from an underside thereof and confronting said stripper plate, said stripper plate having a plurality of corresponding apertures aligned with said magnetic elements for reception of the latter, said magnetic elements each having an endwise extent sufficient to project through the corresponding apertures in said stripper plate and terminate at least along an underside of said stripper plate which confronts said breaker strip.
Claim 9
Dependent Claim
55 words
Apparatus as claimed in claim 7 including first power means for articulating said stripper and magnetic plates toward and away from said wheel, independently of one another, one before the other; and second power means for articulating said stripper and magnetic plates toward and away from said wheel, in unison, one superposed upon the other.
Claim 10
Dependent Claim
69 words
Apparatus as claimed in claim 8 including means operatively coupled with said digital control means and said first power means for activating the latter, prior to the activation of said severing means, such that articulation of said stripper plate into pressing relation with said breaker strip precedes the articulation of said magnetic plate into pressing relation with the latter said strip, said strip having magnetically attractable steel-reinforcing cords therein.
Claim 11
Dependent Claim
71 words
Apparatus as claimed in claim 9 including means operatively coupled with said digital control means and said second power means for activating the latter, after said severing means severs said breaker strip, such that said stripper and magnetic plates are articulated in unison away from said wheel and magnetically lift a frontal portion of said breaker strip, behind the trailing edge of said breaker cut-to-length, off the periphery of said wheel.
Claim 12
Dependent Claim
62 words
Apparatus as claimed in claim 10 including means operatively coupled with said digital control means and said second power means for activating the latter, after transfer of said breaker cut-to-length to said drum, such that said stripper and magnetic plates are articulated in unison toward said wheel and restore said frontal portion of said breaker strip onto the periphery of said wheel.
Claim 13
Dependent Claim
95 words
Apparatus as claimed in claim 11 including means operatively coupled with said digital control means and said first power means for activating the latter, after said frontal portion of said breaker strip has been restored onto the periphery of said wheel, such that articulation of said magnetic plate away from said frontal portion of said breaker strip precedes articulation of said stripper plate out of pressing relation with said strip, said stripper plate thereby permitting said magnetic plate to be separated from said strip such that the latter remains on the periphery of said wheel.
Claim 14
Dependent Claim
47 words
Apparatus as claimed in claim 12 wherein at least a portion of the periphery of said wheel includes magnetic elements, said magnetic elements of said wheel having a combined magnetic force of lesser magnitude than the combined magnetic force of the magnetic elements on said magnetic plate.
Claim 15
Dependent Claim
44 words
Apparatus as claimed in claim 13 wherein said wheel includes a breaker support band extending peripherally therealong over an arcuate extent of substantially 180*, sAid breaker support band constituting that portion of the periphery of said wheel which contacts and supports said breaker strip.
Claim 16
Dependent Claim
47 words
Apparatus as claimed in claim 1 wherein said drum includes a substantially linear array of magnetic elements extending along the periphery thereof in a direction generally endwise of said drum which corresponds to an angle of inclination presented by the leading edge of each said breaker cut-to-length.
Claim 17
Dependent Claim
81 words
Apparatus as claimed in claim 15 wherein said digital control means includes means operatively coupled with said wheel and drum for indexing said drum relative to said wheel, prior to transferring of a breaker cut-to-length from said wheel to said drum and while said wheel is stationary, such that said linear array of magnetic elements on said drum and said leading edge of said breaker cut-to-length on said wheel will thereafter be rotated into direct alignment and contact with one another.
Claim 18
Dependent Claim
160 words
Apparatus as claimed in claim 5 wherein said breaker clamping means includes breaker strip lift means for lifting a frontal portion of said breaker strip, which is directly behind the trailing edge of a leading breaker cut-to-length, off the periphery of said wheel to permit further rotation of said wheel into breaker-transferring relation with said drum; and including means operatively coupled with said digital control means and said breaker strip lift means for activating the latter at further predetermined intervals to restore said frontal portion of the latter said breaker strip upon the periphery of said wheel after the transferring operation of the latter said breaker cut-to-length to said drum; and means operatively coupled with said digital control means and said wheel for effecting stopping of the rotation of the latter at said further predetermined intervals such that said breaker strip lift means timely restores the latter said breaker strip onto a preselected location on the periphery of said wheel.
Claim 19
Dependent Claim
126 words
Apparatus as claimed in claim 17 wherein said digital control means includes means operatively coupled with said wheel for effecting rotation of the latter at a rapid rate over a period between a breaker strip severing operation and a subsequent breaker strip restoring operation in which a frontal portion of the breaker strip is restored upon the periphery of said wheel, and again at a rapid rate over a reduced period after said subsequent breaker strip restoring operation and until a further breaker strip severing operation is to be effected; and means for effecting a reduction in the rate of rotation of said wheel just prior to stopping of said wheel at each said breaker strip severing operation and at each said breaker strip restoring operation.
Claim 20
Dependent Claim
84 words
Apparatus as claimed in claim 1 wherein said drum includes a plurality of circumferentially adjacent, radially shiftable, periphery-defining members; digital digital-control-means-governed drum-sizing means for shifting said members selectively toward and away from the axis of rotation of said drum; said periphery-defining members when shifted away from the axis of rotation of said drum cooperatively defining a breaker-building periphery of increased circumferential extent, and when shifted toward the axis of rotation of said drum said members cooperatively define a breaker-building periphery of decreased circumferential extent.
Claim 21
Dependent Claim
33 words
Apparatus as claimed in claim 19 wherein said drum-sizing means includes a camming member, each of said periphery-defining members including a respective follower operatively associated with, and shiftably responsive to, said camming member.
Claim 22
Dependent Claim
30 words
Apparatus as claimed in claim 20 wherein said camming member is provided with a groove of substantially spiral extent in which a portion of each said follower is slidably constrained.
Claim 23
Dependent Claim
43 words
Apparatus as claimed in claim 21 wherein said drum includes a substantially cylindrical wall internally of which is disposed said camming member for rotation relative thereto, said cylindrical wall having a pluraliTy of circumferentially spaced slots through which slidably project said followers, respectively.
Claim 24
Dependent Claim
72 words
Apparatus as claimed in claim 22 including rotary drive means for rotating said camming member and said cylindrical wall relative to one another to effect, selectively, an increase or decrease in the circumferential extent of said drum; and coupling means for coupling said cylindrical wall and camming member to one another such that each rotates in unison with the other during transfer of a leading breaker to said drum from said wheel.
Claim 25
Dependent Claim
72 words
Apparatus as claimed in claim 19 wherein said drum-sizing means is operatively coupled with said digital control means and said drum for effecting a selective increase or decrease in the circumferential extent of the latter; and including digitally controlled wheel-shifting means operatively coupled with said wheel for effecting radial shifting of the latter relative to the axis of rotation of said drum over an extent corresponding to a change in drum size.
Claim 26
Dependent Claim
81 words
Apparatus as claimed in claim 1 including tread-conveyor means spaced radially adjacent said drum for advancing a tread to and around said drum, said tread-conveyor means including measuring means for determining the longitudinal extent of an advancing tread; and tread-sizing means, responsive to said measuring means, for stretching or contracting selectively the longitudinal extent of the advancing tread such that the longitudinal extent of the latter is substantially identical to the circumferential extent of an exposed breaker wound around said drum.
Claim 27
Dependent Claim
38 words
Apparatus as claimed in claim 25 including means for moving said tread-conveyor means into operative registry with said drum such that a leading edge portion of the advancing tread initially engages said exposed breaker wound around said drum.
Claim 28
Dependent Claim
56 words
Apparatus as claimed in claim 26 including means for decoupling said drum from a rotary drive therefor such that said drum is brought into a freely journaled condition, said tread-conveyor means when in said operative registry with said drum acting to advance the latter said tread onto the exposed breaker and effect rotation of said drum.
Claim 29
Dependent Claim
114 words
Apparatus as claimed in claim 25 wherein said tread-sizing means includes a plurality of plates which are spring loaded for selective movement both in a direction with and, opposite to, the direction of advancement of said tread; means for shifting said plates into and out of pressing engagement with, and normally of, one surface of said advancing tread; means cooperating with said plates for contacting an opposite surface of the advancing tread when said plates are in pressing association with the latter said tread; and means for selectively shifting said plates in a direction with, or opposite to, the direction of advancement of the latter said tread to contract or stretch the latter selectively.
Claim 30
Dependent Claim
118 words
Apparatus as claimed in claim 2 wherein said pulse generating feed-back means includes a first pulse generator operatively coupled with said drum; and a second pulse generator operatively coupled with said wheel, said digital control means including pulse detecting means coupled with both said first and second pulse generators for comparing the rate of pulses returned thereto by both said first and second pulse generators; and pulse conversion means responsive to said pulse detecting means for effecting a change in the rate of rotation of said drum to match the peripheral speed of said wheel when the rate of pulses returned from said first pulse generator differs from the rate of pulses returned from said second pulse generator.
Claim 31
Dependent Claim
30 words
Apparatus as claimed in claim 29 wherein said pulse detecting means includes a digital error register and said pulse conversion means includes a digital-to-analog converter electrically coupled with said register.
Claim 32
Dependent Claim
34 words
Apparatus as claimed in claim 30 wherein said first pulse generator is electrically coupled with said register, and including a pulse divider interposed between and electrically inTercoupling said second pulse generator and said register.
Claim 33
Dependent Claim
21 words
Apparatus as claimed in claim 30 including regenerative SCR drive means interposed between and electrically intercoupling said drum and said converter.
Claim 34
Dependent Claim
39 words
Apparatus as claimed in claim 29 wherein said digital control means further includes an adjustable pulse counter and voltage regulated SCR drive means electrically coupled with one another and both interposed between said second pulse geneator and said wheel.
Claim 35
Dependent Claim
194 words
Apparatus for building a pneumatic tire, the apparatus comprising: a rotatably driven breaker building drum; at least one rotatably driven breaker applicator wheel spaced radially from and adjacent to said drum, said drum and wheel being operatively associated with one another for effecting a transfer of a breaker from said wheel to and around said drum, said drum including a plurality of circumfernetially adjacent, radially shiftable, periphery-defining members; drum-sizing means for radially shifting said members selectively toward and away from the axis of rotation of said drum, said members when shifted away from the axis of rotation of said drum cooperatively defining a breaker building periphery of increased circumferential extent, said members when shifted toward the axis of rotation of said drum cooperatively defining a breaker building periphery of decreased circumferential extent; and electronic digital control means operatively coupled with said drum-sizing means and said wheel for both indexing a change in the circumferential extent of said drum and a corresponding displacement of said wheel radially relative to the axis of rotation of said drum such that the respective peripheries of said wheel and drum are moved into operative breaker-transferring registry with one another.
Claim 36
Dependent Claim
194 words
Apparatus for building a pneumatic tire, the apparatus comprising: a rotatably driven breaker building drum; at least one rotatably driven breaker applicator wheel spaced radially from and adjacent to said drum, said drum and wheel being operatively associated with one another for effecting a transfer of a breaker from said wheel to and around said drum, said drum including a plurality of circumfernetially adjacent, radially shiftable, periphery-defining members; drum-sizing means for radially shifting said members selectively toward and away from the axis of rotation of said drum, said members when shifted away from the axis of rotation of said drum cooperatively defining a breaker building periphery of increased circumferential extent, said members when shifted toward the axis of rotation of said drum cooperatively defining a breaker building periphery of decreased circumferential extent; and electronic digital control means operatively coupled with said drum-sizing means and said wheel for both indexing a change in the circumferential extent of said drum and a corresponding displacement of said wheel radially relative to the axis of rotation of said drum such that the respective peripheries of said wheel and drum are moved into operative breaker-transferring registry with one another.
Claim 37
Dependent Claim
62 words
Apparatus as claimed in claim 34 including pulse generating feed-back means operatively coupled with said drum-sizing means and said digital control means for relaying to the latter drum-size condition intelligence; and selection means for storing in said digital control means a selected drum-size reference with which said digital control means compares drum-size condition intelligence relayed thereto for effecting a drum size change.
Claim 38
Dependent Claim
125 words
Apparatus as claimed in claim 35 wherein said digital control means includes a first digital control system with which is operatively coupled said pulse generating feedback means and selection means; a second digital control system operatively coupled with said wheel; a further pulse generating feedback means operatively coupled with said wheel and said second digital control system for relaying to the latter intelligence corresponding to shifting of said wheel radially relative to the axis of rotation of said drum; and further selection means for storing in said second digital control system a selected wheel-shift reference, corresponding to a selected drum size change, with which said second digital control system compares wheel-shifting intelligence relayed thereto for effecting a shift of said wheel over a selected extent.
Claim 39
Dependent Claim
33 words
Apparatus as claimed in claim 36 wherein said drum-sizing means includes a camming member, each of said periphery-defining members including a respective follower operatively asociated with, and shiftably responsive to, said camming member.
Claim 40
Dependent Claim
30 words
Apparatus as claimed in claim 37 wherein said camming member is provided with a groove of substantially spiral extent in which a portion of each said follower is slidably constrained.
Claim 41
Dependent Claim
43 words
Apparatus as claimed in claim 38 wherein said drum includes a substantially cylindrical wall internally of which is disposed said camming member for rotation relative thereto, said cylindrical wall having a plurality of circumferentially spaced slots through which slidably project said followers, respectively.
Claim 42
Dependent Claim
72 words
Apparatus as claimed in claim 39 including rotary drive means for rotating said camming member and said cylindrical wall relative to one another to effect, selectively, an increase or decrease iN the circumferential extent of said drum; and coupling means for coupling said cylindrical wall and camming member to one another such that each rotates in unison with the other during transfer of a leading breaker to said drum from said wheel.
Claim 43
Dependent Claim
38 words
Apparatus as claimed in claim 40 wherein said rotary drive means is operatively coupled to said first digital control system to be deactivated by the latter during a drum size change when the selected drum size is reached.
Claim 44
Dependent Claim
62 words
Apparatus as claimed in claim 36 including a frame upon which said wheel is supported, and drive means for shifting said frame radially relative to the axis of rotation of said drum, said second digital control system being operatively coupled with said drive means for deactivating the latter when said frame and thereby said wheel has been shifted over said selected extent.
Claim 45
Dependent Claim
74 words
Apparatus as claimed in claim 34 wherein said electronic digital control means includes a pulse generating oscillator; a digital error register; a gate electrically intercoupling said register and oscillator; adjustable metering counter means electrically coupled with said oscillator and said gate for opening the latter and permitting a selected quantity of pulses to be batched into said register; and a pulse generator interposed between said drum and register and electrically coupled to the latter.
Claim 46
Dependent Claim
62 words
Apparatus as claimed in claim 34 wherein said digital control means further includes movable means for supporting said wheel adjacent said drum, a pulse generator operatively associated with the latter said movable means, switching and drive means for effecting movement of said movable means, and an adjustable pulse counter interposed between and operatively associated with said switching means and said pulse generator.
Claim 47
Dependent Claim
258 words
Apparatus for building a pneumatic tire, the apparatus comprising a rotatably driven breaker building drum; at least one rotatably driven breaker applicator wheel spaced radially from and adjacent to said drum; breaker conveyor means for advancing a continuous magnetically-responsive breaker strip to and upon the periphery of said wheel; breaker strip severing means for severing from said breaker strip a leading breaker on said wheel to be transferred to said drum; and breaker strip clamping means for (a) clamping said strip against said wheel during severing from said strip of said leading breaker and (b) lifting a portion of said strip trailing the severed leading breaker off the periphery of said wheel to permit rotation of the latter and transferring of said leading breaker to said drum, said breaker strip clamping means including an arcuate stripper plate and a conformingly arcuate magnetic plate displaceably superposed upon said stripper plate, said stripper and magnetic plate having a common axis of pivotal articulation adjacent the periphery of said wheel to permit movement of said plates into and out of pressing relation with said breaker strip and wheel, said magnetic plate including a plurality of magnetic elements extending from an underside thereof and confronting said stripper plate, said stripper plate having a plurality of corresponding apertures aligned with said magnetic elements for reception of the latter, said magnetic elements each having an endwise extent sufficient to project through the corresponding apertures in said stripper plate and terminate at least along an underside of said stripper plate which confronts said breaker strip.
Claim 48
Dependent Claim
258 words
Apparatus for building a pneumatic tire, the apparatus comprising a rotatably driven breaker building drum; at least one rotatably driven breaker applicator wheel spaced radially from and adjacent to said drum; breaker conveyor means for advancing a continuous magnetically-responsive breaker strip to and upon the periphery of said wheel; breaker strip severing means for severing from said breaker strip a leading breaker on said wheel to be transferred to said drum; and breaker strip clamping means for (a) clamping said strip against said wheel during severing from said strip of said leading breaker and (b) lifting a portion of said strip trailing the severed leading breaker off the periphery of said wheel to permit rotation of the latter and transferring of said leading breaker to said drum, said breaker strip clamping means including an arcuate stripper plate and a conformingly arcuate magnetic plate displaceably superposed upon said stripper plate, said stripper and magnetic plate having a common axis of pivotal articulation adjacent the periphery of said wheel to permit movement of said plates into and out of pressing relation with said breaker strip and wheel, said magnetic plate including a plurality of magnetic elements extending from an underside thereof and confronting said stripper plate, said stripper plate having a plurality of corresponding apertures aligned with said magnetic elements for reception of the latter, said magnetic elements each having an endwise extent sufficient to project through the corresponding apertures in said stripper plate and terminate at least along an underside of said stripper plate which confronts said breaker strip.
Claim 49
Dependent Claim
212 words
Apparatus for building a pneumatic tire, the apparatus comprising: a rotatably driven breaker building drum; at least one rotatably driven breaker applicator wheel spaced radially from and adjacent to said drum; breaker conveyor means for advancing a continuous breaker strip to and upon the periphery of said wheel; breaker strip severing means for severing from said breaker strip a leading breaker on said wheel to be transferred to said drum; electronic digital control means operatively coupled with said wheel and drum for rotating saId wheel and drum simultaneously, said drum including means thereon for effecting transfer of said leading breaker from said wheel to said drum when said wheel and drum are rotated simultaneously, said control means being operatively associated with said drum for varying the rate of rotation thereof; and pulse-generating feed-back means operatively coupled with said wheel, said drum and said control means for relaying intelligence, via a continuous transmission of discrete pulses which are related to respective peripheral increments of said wheel and drum by the time period between pulses, of the relative peripheral speeds of said wheel and drum so that said control means in response via pulse-rate comparison effects pulse-regulated variable rotation of said drum at a peripheral speed corresponding to the peripheral speed of said wheel.
Claim 50
Dependent Claim
212 words
Apparatus for building a pneumatic tire, the apparatus comprising: a rotatably driven breaker building drum; at least one rotatably driven breaker applicator wheel spaced radially from and adjacent to said drum; breaker conveyor means for advancing a continuous breaker strip to and upon the periphery of said wheel; breaker strip severing means for severing from said breaker strip a leading breaker on said wheel to be transferred to said drum; electronic digital control means operatively coupled with said wheel and drum for rotating saId wheel and drum simultaneously, said drum including means thereon for effecting transfer of said leading breaker from said wheel to said drum when said wheel and drum are rotated simultaneously, said control means being operatively associated with said drum for varying the rate of rotation thereof; and pulse-generating feed-back means operatively coupled with said wheel, said drum and said control means for relaying intelligence, via a continuous transmission of discrete pulses which are related to respective peripheral increments of said wheel and drum by the time period between pulses, of the relative peripheral speeds of said wheel and drum so that said control means in response via pulse-rate comparison effects pulse-regulated variable rotation of said drum at a peripheral speed corresponding to the peripheral speed of said wheel.
References Cited (Backward Citations)
US1679560A
Cited
US2690785A
Cited
US2918105A
Cited
GB983349A
Cited
US3405023A
Cited
US3455764A
Cited
US3537936A
Cited
US3607555A
Cited
US3406601A
Cited
US3591439A
Cited
US3654828A
Cited
US3684877A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |