Internal-combustion engines – Accessories – Covers – trays – vibrators – corrosion inhibitors – air filters
Patent
1977-06-08
1979-06-26
Lazarus, Ira S.
Internal-combustion engines
Accessories
Covers, trays, vibrators, corrosion inhibitors, air filters
123148A, 180114, 70237, F02B 7700
Patent
active
041590155
ABSTRACT:
A method and a device to prevent unauthorized use of combustion engine driven vehicles, ships, equipment, as well as engines only, including the steps to remove at least one spark plug, to attach a device having an externally threaded part as replacement for the removed spark plug(s), said part having an embracing outside member, which by means of a locking mechanism can be brought into a freely rotatable state in relation to the threaded member, thus preventing removal of same, or, alternatively, bring said members into an interlocked relationship, thus enabling the device to be attached or removed from the engine.
REFERENCES:
patent: 1091295 (1914-03-01), Combs
patent: 1113058 (1914-10-01), Schwitzer
patent: 1140317 (1915-05-01), Robinson
patent: 1359291 (1920-11-01), Tripp
patent: 1937848 (1933-12-01), Shinn
patent: 3181523 (1965-05-01), Casey
patent: 3796074 (1974-03-01), Vik
patent: 3978698 (1976-09-01), Ono
Forsberg Christer
Gotto Raymond J.
Holman John C.
Lazarus Ira S.
Stern Marvin R.
Telcefo Security Products AB
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