Abstract: A toroidal rotary damper apparatus includes a housing having a partial toroidal inner housing surface and a piston moveable in the housing having a curved outer peripheral piston surface in engagement with the inner housing surface. The housing includes terminal ends defining fluid barriers. A flow control passageway defined by either the piston or an external control system controls passage of damper fluid when there is relative rotational movement between the piston and the housing to dampen the forces causing relative rotational movement.

Abstract: A toroidal rotary damper apparatus includes a housing having a toroidal inner housing surface and a piston moveable in the housing having a curved outer peripheral piston surface in engagement with the inner housing surface. A fluid barrier is attached to the housing and located in the housing interior. A flow control passageway defined by either the piston or the fluid barrier controls passage of damper fluid when there is relative rotational movement between the piston and the housing to dampen the forces causing relative rotational movement.

Abstract: Apparatus for connection to relatively moveable first and second structural members to damp such relative movement. The damper apparatus includes a damper housing defining a curved damper housing interior for attachment to a first structural member and a curved damper element for attachment to a second structural member and moveable within the curved damper housing interior along a curved path of movement.