Title:
SYSTEM FOR FASTENING SPARK PLUGS OF BOILERS OR THE LIKE
Document Type and Number:
WIPO Patent Application WO2005111500
Kind Code:
A3
Abstract:
The invention relates to a system for fastening spark plugs (4) for boilers or the like, comprising a retainer (1) with an hole housing the ceramic body (104) of the spark plug (4) of the spark plug. According to the invention said hole axially projects for a certain length at least on one side of the retainer (1) such to form a cylindrical housing (5) for the ceramic body (104) of the spark plug (4), a cylindrical tightening ring (6, 8) being provided having such inner and external dimensions that it can be inserted by force fit between the inner wall of the cylindrical housing (5) and the external wall of the ceramic body (104) so to generate a predetermined radial tightening force of the spark plug (4) and such to obtain a tight seal between one side and the other one of the retainer (1).
Inventors:
OFFREDI GIORGIO (IT)
Application Number:
PCT/EP2005/052146
Publication Date:
June 01, 2006
Filing Date:
May 11, 2005
Export Citation:
Assignee:
CAST S P A (IT)
OFFREDI GIORGIO (IT)
OFFREDI GIORGIO (IT)
International Classes:
F23Q3/00
Foreign References:
| FR2834048A1 | 2003-06-27 | |||
| EP0930464A2 | 1999-07-21 | |||
| US6059479A | 2000-05-09 | |||
| DE9415187U1 | 1994-11-03 | |||
| FR2834049A1 | 2003-06-27 | |||
| CH452462A | 1968-05-31 | |||
| GB1227840A | 1971-04-07 |
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