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US3674604A Expired / Lapsed US ⏱️ 0.0 years remaining

Tire building drum

Assignee: NRM Corp
•
Filing: 1969-11-17
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Granted: 1972-07-04
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Expires: 1989-11-17
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Abstract

Abstract In this Rind-type drum for making tires described in my co-pending application Ser. No. 617,658 now abandoned in favor of applicant''s continuation Ser. No. 28,281, filed Apr. 22, 1970, entitled "Tire Building Machine," the bead clamping means consist for each flange supporting same of an annular set of pivoted arms each formed with an outer bent radially away from the drum axis, this end carrying a pivoted finger formed with a forked outer end and radially urged away from the drum axis by a spring reacting against said arm, and a link connecting said arm to the moveable end of a double-acting cylinder mounted in said flange at a point nearer to the drum axis than the fulcrum of said arm, the movement of the operative end of said cylinder towards the transverse plane of symmetry of the drum causing the arm to move away from the drum axis so that the outer end of said arm, by co-acting with said pivoted finger, engages the bead of the tire carcass somewhat like a pair of tongs.

Inventors

  • 👤 Georges Gazuit

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 16:25
CPC Classifications
B; B29; B29D; B29D30/00; B29D30/06; B29D30/36; B29D30/08; B29D30/20; B29D30/24; B29D30/244; B29D30/245; B29D30/32; B29D2030/3214

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1975-07-04 1976-01-03 1976-07-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-07-04 1980-01-03 1980-07-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-07-04 1984-01-03 1984-07-04 $7700.00 Window Closed / Lapsed

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