07182691 is referenced by 216 patents and cites 155 patents.

Directional haptic feedback for a haptic feedback interface device. A haptic feedback interface device, in communication with a host computer, includes a housing physically contacted by a user operating the interface device, and a plurality of actuators producing inertial forces when the actuators are driven by control signals. Each of the actuators includes a rotatable eccentric mass positioned offset on a rotating shaft of the actuator, where the actuators are rotated simultaneously such that centrifugal forces from the rotation of masses combine to output the inertial forces substantially only along a single axis having a desired direction approximately in a plane of rotation of the masses.

Title
Directional inertial tactile feedback using rotating masses
Application Number
9/968725
Publication Number
7182691 (B1)
Application Date
September 28, 2001
Publication Date
February 27, 2007
Inventor
Bruce M Schena
Menlo Park
CA, US
Agent
Thelen Reid Brown Raysman and Steiner
Assignee
Immersion Corporation
CA, US
IPC
A63F 13/00
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