Patent ID: 11867252
Assignee: MOSHUN, LLC
Field: Mechanical elements (Mechanical engineering)
Classification: CPC E  F | IPC E  F

Claim 13:
14. A device for controlling the motion of a door, comprising:
a body that includes a first chamber filled at least in part with a shear thickening fluid, and a second chamber fluidly isolated from the first chamber, the body being configured to be connected to a first hinge leaf of a door hinge,
a cam arranged in the second chamber and connected to a second hinge leaf of the door hinge,
a cam follower arranged in the second chamber and connected to a piston, wherein the piston is arranged in the first chamber, the piston including a plunger shaft and a piston head, wherein the piston head is arranged in the first chamber and includes one or more slots,
a shim including one or more slots arranged in the first chamber, wherein the shim is mounted on a plug that is mounted to the piston head and wherein the plug includes a shoulder such that the shim can move axially along the plug between the piston head and the shoulder, and
wherein, when one of the first and second hinge leaves is rotated with respect to the other, one of the cam and the body rotates, which causes the cam follower to move axially and push the piston to move axially in a direction parallel to a rotational axis of the cam and exert pressure against the shear thickening fluid.