Cam action door closer
AssigneeAbloy Oy
InventorHarri JUNTUNEN
Life of this patent
Estimating the term…
Abstract
A cam action door closer comprising a body, a spring, a speed control channel system and a latching control channel system, a closing control piston having a piston head and a circular side. The closing control piston has a cutting on the side of the closing control piston and on the piston head, the cutting forming a control edge at its end. The cutting has a length between the piston head and the control edge. The speed control channel system comprises a speed connecting channel, which is located in such a way that the control edge is arranged to close it.
Claims4
A cam action door closer comprising a body, a spring, an axis, a cam being connected to the axis, a speed control channel system and a latching control channel system, and a closing control piston having a piston head and a circular side, the spring being on another side with respect to the axis than the closing control piston, wherein the closing control piston has a cutting on the side of the closing control piston and on the piston head, the cutting forming a control edge at its end, the cutting having a length between the piston head and the control edge,
- the speed control channel system comprises a speed control channel and a speed connecting channel, which speed connecting channel is located in such a way that the control edge is arranged to close it when the closing control piston is moved by the spring via the cam to close a door.
Dependencies are inferred from the claim text.