Gas spring with integrated lead screw drive

An improved gas spring (20) has a drive motor for driving a piston. A piston head (32) has a thread (36) at an outer periphery that is guided along a mating thread (38) in an inner periphery (37) of a cylinder (22). The piston (32) is caused to rotate relative to the cylinder, and is guided for reci...

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Bibliographische Detailangaben
1. Verfasser:	BAUMAN WALTER DOUGLAS
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHECKS FOR WINGS DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL KEYS LIGHTING LOCKS MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING SAFES SHOCK-ABSORBERS SPRINGS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL THERMAL INSULATION IN GENERAL WEAPONS WINDOW OR DOOR FITTINGS WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THEFUNCTIONING OF THE WING
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Beschreibung
Zusammenfassung:	An improved gas spring (20) has a drive motor for driving a piston. A piston head (32) has a thread (36) at an outer periphery that is guided along a mating thread (38) in an inner periphery (37) of a cylinder (22). The piston (32) is caused to rotate relative to the cylinder, and is guided for reciprocating movement. In this manner, a drive motor is incorporated into the gas spring such that the gas spring has both a driven and a manual mode. The inventive gas spring has particular application in attaching a vehicle closure to a vehicle frame.