Title: Tire building drum

Abstract: A tire building drum is adapted to be expansible and collapsible at three different diameter states and includes a main tire building drum, a pair of auxiliary tire building drums partially engageable with the radially inner surfaces of the opposite end portions of the main tire building drum to axially be slidable toward and away from the equatorial plane of the main tire building drum, a rotary shaft carrying thereon the main and auxiliary tire building drums for rotation thereof, and a pair of slide means for axially sliding the auxiliary tire building drums toward and away from the equatorial plane of the main tire building drum.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Suzuki, Masayoshi (Kodaira, JA)
Ozaki, Kazuo (Higashiyamato, JA)

Application Number: 568053
Filing Date: 1975-04-14
Publication_date: 1976-04-06
Assignee: Bridgestone Tire Company Limited (Tokyo, JA)
Primary Class(es): 156/415 156/132, 156/417, 156/419
Other Classes:
US Patent Ref:

3160545	Dec, 1964	Burton	156/415.
3237199	Feb, 1966	Brey	156/415.
3244575	Apr, 1966	Sabo et al.	156/132.
3388024	Jun, 1968	Black et al.	156/417.
3405023	Oct, 1968	Eckenwiler et al.	156/415.
3547733	Dec, 1970	Leblond	156/415.
3598673	Aug, 1971	Caretta	156/132.
3645826	Feb, 1972	Henley et al.	156/416.

Other Refs:
Primary Examiner: Powell, William A.
Assistant Examiner: Kittle, John E.
Attorney: Haseltine, Lake & Waters