Adjustable expansion band for wristwatch

Details Adjustable expansion band for wristwatch Adjustable expansion band for wristwatch

1977-05-12

1978-08-08

Lanham, C. W.

Chain, staple, and horseshoe making

Chains

Elastic

F16G 1324, A44C 508

Patent

active

041048725

ABSTRACT:
An adjustable expansion band for a wristwatch of the type having two rows of overlapping links, having clips connecting alternating links between rows, and containing spring members within the links. The construction utilizes U-shaped clip members having asymmetrical legs and selectively engaging the springs which are held in slideable spring retainers inside the links. Adjacent expansion band sections can be disengaged by sliding the spring retainers to the unlocked positions.

REFERENCES:
patent: 3140581 (1964-07-01), Hauser
patent: 3416305 (1968-12-01), Rieth
patent: 3543507 (1970-12-01), Vanover
patent: 4008632 (1977-02-01), Denney

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