Apparel – Guard or protector – For wearer's head
Patent
1980-07-18
1982-09-07
Nerbun, Peter P.
Apparel
Guard or protector
For wearer's head
2209, 179156R, A42B 124
Patent
active
043476317
ABSTRACT:
A device (10) is disclosed for mounting a hearing protector (90) on each side of a hard hat, pressing the hearing protectors at a substantially constant force about the ears and moving them in oppositely incline planes between an operative wearing position (W) and an extended inoperative pressure relieved stored position (R). Each device comprises support means (20) including a pivot (28) adapted for attachment to and retained to a side of the hard hat (H), by retainer means (30), guide means (40) (50) including at least one incline surface (44) (54) and a key boss (46) (56) projecting into a key hole shape slot (74) in a rigid central end portion (72) of a resilient flexible support arm (70) secured by releasable clamping means (60). When positioned in the elongated part of the key hole slot, the key boss allows limited vertical and angular adjustments of the support arm (70) and unrestricted rotation between operative and inoperative positions can occur only when the support arm is fully extended and an enlarged circular end portion of the key hole slot is aligned with the axis of the pivot stud and key boss of smaller diameter. Thus, at any given degree of flexure the support arm exerts a substantially constant resilient force and extending and rotation of the support arm along the incline plane to the inoperative stored position shifts the arm and protector outwardly from any substantially pressure contact with the side of the hat to allow the arm and protector to recover and return to an unflexed natural state.
REFERENCES:
patent: D244491 (1977-05-01), Csiki et al.
patent: D248191 (1978-06-01), Csiki et al.
patent: 3400406 (1968-09-01), Aileo
patent: 3430261 (1969-03-01), Benner
patent: 3721993 (1973-03-01), Lonnstedt
patent: 3795919 (1974-03-01), Aho
patent: 4069512 (1978-01-01), Palmaer
patent: 4104743 (1978-08-01), Bottger
Fred Walter
Nerbun Peter P.
Norton Company
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