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US3850731A Expired / Lapsed US ⏱️ 0.0 years remaining

Tire discharge mechanism

Assignee: Bridgestone Firestone Inc
•
Filing: 1971-09-15
•
Granted: 1974-11-26
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Expires: 1991-09-15
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Abstract

Abstract A fully automatic machine for producing ''''green tires'''' or unvulcanized tire carcasses, especially suitable for making tubeless tires. The machine comprises a plurality of interconnected and dependent assemblies or stations where specialized operations, normally done semi-automatically or by hand, are carried out by mechanical devices acting in sequence. The machine includes a plurality of conventional tire building drums continuously moving between horizontally disposed, stationary table assemblies where innerliner and chafer strips, and first and second ply material are successively wrapped on the drums as they move across the table on which the material is positioned. The wrapped drums from these assemblies, are sent to turrent units where they are arcuately positioned for receiving beads, tread cushion, stitching, strips of whitewall, if required, and are discharged from the collapsed drums for removal and storage. The stripped drums, or drums from which tires are removed, are automatically expanded and recycled through the assemblies for building more tire carcasses.

Inventors

  • 👤 W Brey
  • 👤 W Hostetler
  • 👤 F Elder
  • 👤 E Loeffler
  • 👤 H Kolm

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 22:33
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/08; B29D30/20; B29D30/24; B29D30/26; B29D30/2607; B29D30/0016; B29D2030/0044; B29D2030/2671; B29D2030/2692; B29D30/48; B29D2030/487; B29K; B29K2021/00

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 75 words
A mechanism for discharging a green tire carcass from its building drum supported on a building machine, comprising 1. a substantially annular plate, 2. means to move said plate axially over and parallel to the building drum, 3. ring segments arcuately spaced about said plate, 4. means to adjust said segments radially on said plate, and 5. shoulders on said segments to support the tire carcass by its bead when the building drum is collapsed.
Claim 2
Dependent Claim 75 words
A mechanism for discharging a green tire carcass from its building drum supported on a building machine, comprising 1. a substantially annular plate, 2. means to move said plate axially over and parallel to the building drum, 3. ring segments arcuately spaced about said plate, 4. means to adjust said segments radially on said plate, and 5. shoulders on said segments to support the tire carcass by its bead when the building drum is collapsed.
Claim 3
Dependent Claim 13 words
means to move said plate axially over and parallel to the building drum,
Claim 4
Dependent Claim 13 words
means to move said plate axially over and parallel to the building drum,
Claim 5
Dependent Claim 7 words
A mechanism as in claim 1, and
Claim 6
Dependent Claim 18 words
A mechanism as in claim 2, wherein said locating means comprises an annular collar rotatable on said plate.
Claim 7
Dependent Claim 7 words
ring segments arcuately spaced about said plate,
Claim 8
Dependent Claim 7 words
ring segments arcuately spaced about said plate,
Claim 9
Dependent Claim 10 words
means to adjust said segments radially on said plate, and
Claim 10
Dependent Claim 10 words
means to adjust said segments radially on said plate, and
Claim 11
Dependent Claim 18 words
shoulders on said segments to support the tire carcass by its bead when the building drum is collapsed.
Claim 12
Dependent Claim 18 words
shoulders on said segments to support the tire carcass by its bead when the building drum is collapsed.
Claim 13
Dependent Claim 9 words
means for locating the ring segments at preselected diameters.
Claim 14
Dependent Claim 9 words
means for locating the ring segments at preselected diameters.

References Cited (Backward Citations)

US2313035A Cited
US3240653A Cited
US3645818A Cited
US3738893A Cited
US3687756A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-11-25 1978-05-27 1978-11-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-11-25 1982-05-27 1982-11-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-11-25 1986-05-27 1986-11-26 $7700.00 Window Closed / Lapsed

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