Internal-combustion engines – With heating means
Reexamination Certificate
2006-06-27
2006-06-27
Argenbright, Tony M. (Department: 3747)
Internal-combustion engines
With heating means
C219S208000, C123S14250R
Reexamination Certificate
active
07066125
ABSTRACT:
A frost plug adapter assembly having a locking mechanism that provides a positive capture through an existing frost plug aperture. A cylindrical body is engaged within a frost plug aperture and is maintained in place by a bolt, a locking element and a wing nut. The bolt is advantageously positioned through the cylindrical body with a bolt head at the outer end. The wing nut is screwed onto a threaded end of the bolt so that the wings engage channels of arms of the locking element to spread the arms until they contact an inner annulus of the frost plug aperture. The frost plug adapter assembly is also capable of providing access to engine fluid by providing channels through the inner end of the cylindrical body. The frost plug adapter assembly is easy to install and the locking mechanism prevents the assembly from falling out under severe conditions.
REFERENCES:
patent: 3727638 (1973-04-01), Zaremba, Jr. et al.
patent: 4242564 (1980-12-01), Kendall
patent: 4851640 (1989-07-01), Smith
patent: 6113072 (2000-09-01), Wickett
patent: 963518 (1975-02-01), None
patent: 1135757 (1982-11-01), None
patent: 2123962 (1995-11-01), None
patent: 2238938 (1997-06-01), None
DEFA WarmUp—Technical Handbook—pp. 19 to 34—Online 2003.
Active Gear Co of Canada Limited
Argenbright Tony M.
Harris Katrina
Riches, Mc Kenzie & Herbert LLP
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