Mechanical return blocking device
AssigneeBang & Olufsen Medicom A/S
InventorsJørgen Rasmussen, Søren Christrup
Life of this patent
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Abstract
It is an object of the present invention to provide a mechanical blocking device by means of which the user will only be able to initiate an event by activating a stroke of the button or lever past the activation point of the event. Should the movement of the button or lever be stopped or the direction changed before reaching the activation point, retaining means will hinder further movement in the first direction before the lever or button has been brought back to its starting position.
Claims14
A mechanical return blocking device comprising two cooperating and mutually displaceable parts:
- a first part wherein parallel to a longitudinal axis at least one set of tracks comprising a first track and a second track is provided, and that the second track comprises one or more retaining members and a sliding guide arranged at one end of the second track;
- a second cooperating part wherein a leg member comprising an engagement section for engagement with the tracks provided on the first part is provided, and that said leg member is biased towards the first part and that the engagement section is adapted to travel in the direction of the longitudinal axis;
- and further that the retaining members allows the engagement section of the leg member to move unhindered in a first direction on said second track towards the sliding guide but blocks movement in an opposite second direction and that the engagement section of the leg member after having passed the sliding guide moving in the first direction, and the travel direction is reversed, slides on the sliding guide, whereby the engagement section and thereby the leg member is directed from the second track to the first track for unhindered movement on said first track in said second direction.
A manually operated inhalation device in which the dispensation of a medicament dose from a canister arranged in the device is activated by depressing a button or lever, which button or lever is further connected to a mechanically return blocking device where said device comprises two cooperating and mutually displaceable parts:
- a first part wherein parallel to a longitudinal axis at least one set of tracks comprising a first track and a second track is provided, and that the second track comprises one or more retaining members and a sliding guide arranged at one end of the second track;
- a second cooperating part wherein a leg member comprising an engagement section for engagement with the tracks provided on the first part is provided, and that said leg member is biased towards the first part and that the engagement section is adapted to travel in the direction of the longitudinal axis;
- and further that the retaining members allows the engagement section of the leg member to move in a first direction towards the sliding guide but blocks movement in an opposite second direction and that the engagement section of the leg member slides on the sliding guide, whereby the engagement section and thereby the leg member is directed from the second track to the first track.
Dependencies are inferred from the claim text.