Headband adjustment device

Details Headband adjustment device Headband adjustment device

2005-03-29

2005-03-29

Sandy, Robert J. (Department: 3677)

Buckles, buttons, clasps, etc.

Buckles

Harness

C024S0680AS, C024S071100

Reexamination Certificate

active

06871386

ABSTRACT:
A headband adjustment device includes a base, an adjustable seat, at least a press piece, a resilient adjustment plate and two band shafts. The base provides a base through hole. The adjustable seat is joined to the base an has a wing plate at two opposite lateral sides and an adjustment frame at two ends. The press piece is disposed beside the respective wing plate with two ends extending a press slant end. The adjustment plate is fiat with a middle protrusion top and at both lateral sides of the protrusion top having a fixing projection respectively, at a bottom near both ends having a lift guide groove with a plate slant extending toward the two ends respectively to interfere with ratchet gears on the headband. The band shafts each have an end projection and the headband encloses the respective band shaft and extends outward inversely.

REFERENCES:
patent: 3992720 (1976-11-01), Nicolinas
patent: 4607398 (1986-08-01), Faulconer
patent: 4795384 (1989-01-01), Hattori
patent: 4999846 (1991-03-01), Ball et al.
patent: 5467508 (1995-11-01), Feng
patent: 6185794 (2001-02-01), Maggi

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