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US 8,505,121 B2Granted
Head suspension having transition arms and rear support
Assignee3M Innovative Properties Company
InventorsLars-Olov Ahlgren, Niklas M. S. Lilenthal, Arne O. Linderstrand
Life of this patent
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Abstract
A head suspension includes a headband portion having a length and two transition arms. Each transition arm is coupled to the headband portion and extends away from the headband portion length at an angle greater than zero degrees. Each transition arm has a distal end and a pivot at the distal end. The pivot characterized by a pivot point and a rear support portion is pivotally connected to each pivot.
Claims17
A head suspension comprising:
- a headband portion having a length and having a bottom edge;
- at least one top band that extends over a user's head and each major end of which is joined to the headband portion;
- two transition arms, each transition arm coupled to the headband portion and extending away from the headband portion length at an angle greater than zero degrees, and each transition arm having a distal end and a pivot at the distal end, the pivot characterized by a pivot point;
- wherein each transition arm comprises a transition arm axis and wherein each transition arm comprises a length in a range from 2 cm to 10 cm, the length being defined by the linear distance, along the transition arm axis of the transition arm, between the bottom edge of the headband portion and the pivot point;
- a rear support portion detachably connected to each pivot, wherein the rear support portion is asymmetric such that a user can detach the rear support portion, rotate the rear support portion 180 degrees, and reattach the rear support portion to each pivot to assemble it in a low configuration or in a high configuration, wherein the headband portion defines a headband plane, wherein the rear support portion is pivotable through a pivot range between a maximum raised position and a maximum lowered position, and wherein the rear support portion is below the headband plane even when the rear support portion is in the maximum raised position;
- and
- a head protection element attached to the head suspension,
- wherein the head suspension is configured to support the entirety of the head protection element.
5 more elements
Dependencies are inferred from the claim text.