Swiss lever escapement

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United States of America Patent

PATENT NO 8529122
APP PUB NO 20110149696A1
SERIAL NO

12963143

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Abstract

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This Swiss lever escapement comprises an escape wheel having teeth, and a lever having on the one hand an entry pallet and an exit pallet that engage alternately with the teeth of the escape wheel, and on the other hand a fork that engages periodically with an impulse pin on a roller mounted on the staff of a regulator balance wheel. The relative width Lpl of each of said pallets, expressed as a percentage of the sum of the lengths of arc of one of said teeth and one of said pallets, measured at the circumference of the escape wheel is:

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Patent Owner(s)

Patent OwnerAddress
ROLEX S ASWITZERLAND ZUG ZUG

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cettour-Baron, Raphael Messery, FR 2 2
Chiuve, Alexandre Grand-Lancy, CH 2 4

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