Directional lock for interface headgear arrangement
AssigneeFisher & Paykel Healthcare Limited
InventorsJeroen Hammer, Vitaly Kapelevich
Life of this patent
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Abstract
A directional lock or a headgear or interface assembly comprising one or more directional locks that include a catch arrangement for initiating or assisting in movement of a lock member of the direction lock. In some configurations, the catch arrangement assists movement of the lock member in only a portion of a range of travel of the lock member. In some configurations, the directional lock comprises a housing and a sleeve and the catch arrangement comprises a catch arm carried by the sleeve. The catch arm includes a catch end that contacts the lock member, which can be a lock washer in some configurations.
Claims19
A directional lock, comprising:
- a housing defining an interior space, a first opening and a second opening, wherein each of the first and second openings communicates with the interior space;
- a brake defined by or supported by the housing;
- at least one lock disposed within the housing;
- a core that passes through both the first and second openings of the housing and engages the at least one lock such that movement of the core relative to the housing causes rotation of the at least one lock;
- wherein the at least one lock is movable relative to the housing between a first position, which provides a first level of resistance to rotation of the at least one lock, and a second position, which provides a second level of resistance to rotation of the at least one lock, wherein the second level of resistance is higher than the first level;
- and
- wherein the second level of resistance is caused at least in part by contact between the at least one lock and the brake.
Dependencies are inferred from the claim text.