Mechanical spring actuator
AssigneeKyntec Corporation
InventorGerald J Spyche, Jr.
Life of this patent
Estimating the term…
Abstract
A linear actuator comprising a housing with a proximal end and a distal end, the housing defining a central cavity extending axially through the housing; a piston tube, where a first portion of the piston tube is slidably positioned axially in the housing, and a second portion of the piston tube extends outwardly from the distal end of the housing; an elongated rotatable screw positioned axially within the central cavity of the housing; a nut positioned within the housing and mounted about the screw, the nut configured to move axially within the housing as the screw rotates; and a spring positioned around the screw, the spring positioned within the housing between the nut and the piston tube; wherein the spring is configured to bias the piston tube away from the nut.
Claims15
A linear actuator, comprising:
- a housing comprising a proximal end and a distal end, and defining a central cavity extending axially through the housing;
- a piston arranged to slide within the central cavity of the housing;
- a piston tube having a first portion slidably positioned axially in the housing and a second portion extending outwardly from the distal end of the housing;
- an elongated rotatable screw positioned axially within the central cavity of the housing and connected to the piston;
- a nut positioned within the housing and mounted about the elongated rotatable screw, wherein the nut is configured to engage with the elongated rotatable screw and move axially within the housing as the elongated rotatable screw rotates;
- and
- a spring positioned around the elongated rotatable screw, the spring positioned within the housing between the nut and the piston tube and contacting the nut;
- wherein the spring is configured to bias the piston tube away from the nut.
A linear actuator, comprising:
- a housing comprising a proximal end and a distal end, and defining a central cavity extending axially through the housing;
- a piston arranged to slide within the central cavity of the housing;
- a piston tube having a first portion slidably positioned axially in the housing and a second portion extending outwardly from the distal end of the housing;
- an elongated rotatable screw positioned axially within the central cavity of the housing and connected to the piston;
- a cylindrical nut positioned within the housing and mounted about the elongated rotatable screw, wherein the cylindrical nut is configured to move axially within the housing as the elongated rotatable screw rotates;
- a first spring positioned around the elongated rotatable screw, the first spring positioned within the housing between the cylindrical nut and the piston tube, wherein the first spring is configured to bias the piston tube away from the cylindrical nut;
- a first retainer comprising a proximal end and a distal end, wherein the first retainer is positioned within the housing between the first spring and the piston tube, the first retainer defining an opening configured to receive the first spring therethrough to retain the first spring at its distal end;
- a second retainer comprising a proximal end and a distal end, wherein the second retainer is positioned within the housing and around the elongated rotatable screw;
- and
- a second spring positioned around the elongated rotatable screw, the second spring positioned within the housing between the proximal end of the housing and the second retainer, wherein the second spring is configured to bias the second retainer away from the proximal end of the housing, and wherein the second retainer is configured to interface with an outer wall of a proximal end of the first retainer to enable the first retainer to exert a force on the second spring.
Dependencies are inferred from the claim text.