Spark plug gasket and method of attaching the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 15, 2018
Issued Date -
N/A
app pub date -
Jun 13, 2016
filing date -
Jun 15, 2015
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A spark plug and a method of manufacturing the same, where the spark plug has a metal shell, an insulator, a center electrode, a ground electrode, and a gasket located over a threaded portion of the shell and used to seal the spark plug against a cylinder head. Once the gasket is attached on the spark plug, it is shrunk to become a post-formed gasket with an inner diameter that prevents the post-formed gasket from slipping over a threaded portion of the metallic shell. This process may be carried out with a collet type machine that produces a post-formed gasket that is flat and has a substantially uniform thickness, which can improve the sealability of the gasket. This may be important when the spark plug is installed in a cylinder head made from a lost foam casting process or other process that creates a somewhat porous sealing surface.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2016 Application Filing Year
- F02P Class
- 319 Applications Filed
- 241 Patents Issued To-Date
- 75.55 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- F02P Class
- 0 % this patent is cited more than
- 7 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Nov 15, 2025 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Nov 15, 2029 |
