Compact actuator with large thrust
Patent 7267044 Issued on September 11, 2007. Estimated Expiration Date: 
February 16, 2026. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 16, 2026. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorApplicationNo. 11355596 filed on 02/16/2006US Classes:92/136, WITH TOOTHED GEAR, SPLINE OR THREAD RIGID WITH WORKING MEMBER92/33, Element extends through working member portion74/89.25, Auxiliary drive (e.g., fluid piston, etc.) for load92/31RECTILINEARLY MOVING WORKING MEMBER AND COAXIAL OR PARALLEL ELEMENT SLIDABLY INTERENGAGED FOR RELATIVE ROTARY MOVEMENTExaminersPrimary: Lazo, Thomas E.Foreign Patent References
International ClassesF01B 3/08F16H 3/06 AbstractA manually and/or fluid-pressure operated rotary actuator is coupled with a power screw in a compact assembly to produce large linear thrust. The actuator is operated in both directions by fluid pressure or in one direction by fluid pressure and in the other by spring energy, or by fluid pressure alone or in combination with manually applied force. The actuator has a cylindrical housing, a cylindrical reaction member inside of the housing, a cylindrical piston partially covering the reaction member, a cylindrical rotor partially covering the piston, a device forcing rotation of the piston when moving axially with respect to the reaction member and/or rotor, a plunger engaged with the rotor and restrained from turning with respect to the housing, a base through which the plunger extends, a spring connected to the rotor and housing, a two port assembly, and a handle affixed to the reaction member for manual operation.Field of SearchWITH ALTERNATIVE MANUAL ACTUATION OF LOADRECTILINEARLY MOVING WORKING MEMBER AND COAXIAL OR PARALLEL ELEMENT SLIDABLY INTERENGAGED FOR RELATIVE ROTARY MOVEMENT Element extends through working member portion WITH TOOTHED GEAR, SPLINE OR THREAD RIGID WITH WORKING MEMBER Including screw and nut Auxiliary drive (e.g., fluid piston, etc.) for load By means driven for inverting conveyed items | |
