John H Herzberg

US Patent:

58135600, Sep 29, 1998

Filed:

Apr 25, 1997

Appl. No.:

8/837872

Inventors:

David Weinberg - Fort Lauderdale FL
John Herzberg - Miami Beach FL

International Classification:

B65D 4102

US Classification:

220266

Abstract:

A method of seal locking together a preformed plastic molded top lid portion of a gas filler cap to a preformed plastic molded threaded base portion of a gas filler cap. The preformed top lid portion of the gas cap is locked to a stationary preformed threaded base portion of a gas filler cap by spin welding a lower extending tab of the top lid portion into a mating channel in the base portion together. The tab can be a circular rectangular tab having a step down inner edge and an indentation cutout on the lower surface of the lid portion between the tab and an exterior side wall of the lid portion, wherein the indentation cut-out provides a sacrificial break point upon impact and allows the exterior side wall of the top lid portion to break-off without breaking the locking seal between the tab and the channel for reasons of safety upon impact. The channel can be a circular with an angled inner wall. The spin welding causes plastic material on the tab and channel that abuts together to heat, melt and sealingly fuse the tab and channel together.

US Patent:

D3533573, Dec 13, 1994

Filed:

May 3, 1993

Appl. No.:

D/007794

Inventors:

David Weinberg - Fort Lauderdale FL
John Herzberg - Fort Lauderdale FL

US Classification:

D12197