Title: Method of manufacturing roller chimes for closed head drums

Abstract: In the production of closed head drums, integral L-shaped roller chimes are formed outwardly from the side walls of the drums. In producing the drums, a thermoplastic parison or tubular member is placed within a mold and is shaped by blowing it outwardly against the mold surfaces. In the blowing operation, an inwardly open channel-shaped part is formed in the tubular member, then by moving one part of the mold relative to another, the channel-shaped part is compressed into the L-shaped chime.

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Inventors: Hammes, Theo (Cologne, DE, US)

Application Number: 884397
Filing Date: 1978-03-08
Publication_date: 1980-10-14
Assignee: Mauser Kommandit-Gesellschaft (Bruhl, DE)
Primary Class(es): 264/534 425/525
Other Classes:
US Patent Ref:

3004285	Oct, 1961	Hagen.
3050773	Aug, 1962	Hagen	264/98.
3214797	Nov, 1965	Ollier et al.
3298514	Jan, 1967	Erickson.
3342915	Sep, 1967	Wanderer.
3804289	Apr, 1974	Churan.
3821344	Jun, 1974	Peters	264/296.
3843005	Oct, 1974	Uhlig.
3889839	Jun, 1975	Simon et al.
3912438	Oct, 1975	Papovani.
3934747	Jan, 1976	Needt.
3938687	Feb, 1976	Maier et al.	220/5.
3985257	Oct, 1976	Shaffer et al.
4094432	Jun, 1978	Zilbert.
4170623	Oct, 1979	Dubois et al.	425/525.

Other Refs: 7600621

May, 1976	DE.

Primary Examiner: Silbaugh, Jan H.
Assistant Examiner:
Attorney: Pennie & Edmonds