LINEAR ACTUATOR
First Claim
Patent Images
1. A linear actuator comprising:
- a) a housing having a first end and a second end, wherein the first end and the second end are open;
b) a top plate securable to the housing at the first end;
c) a bonnet securable to the housing at the second end;
d) a sealed cavity formed by the housing, the top plate, and the bonnet when the top plate and the bonnet are secured to the housing;
e) a piston biased away from the bonnet; and
f) a stem secured to the piston, wherein the stem is axially actuated by motion of the piston, and further wherein the stem passes through the bonnet to be securable to an actuated component and the bonnet is securable to equipment comprising the actuated component; and
wherein the top plate or the bonnet can be unsecured from the housing without the stem being unsecured from the actuated component.
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Abstract
A linear actuator comprising a housing, a top plate securable to the housing at a first end, and a bonnet securable to the housing at a second end. The housing, top plate and bonnet form a sealed cavity, a piston is biased away from the bonnet and a stem is secured to the piston, wherein the stem is axially actuated by motion of the piston and the stem passes through the bonnet to be securable to an actuated component. Further, the actuator can be disassembled and serviced while still attached to actuated equipment.
6 Citations
12 Claims
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1. A linear actuator comprising:
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a) a housing having a first end and a second end, wherein the first end and the second end are open; b) a top plate securable to the housing at the first end; c) a bonnet securable to the housing at the second end; d) a sealed cavity formed by the housing, the top plate, and the bonnet when the top plate and the bonnet are secured to the housing; e) a piston biased away from the bonnet; and f) a stem secured to the piston, wherein the stem is axially actuated by motion of the piston, and further wherein the stem passes through the bonnet to be securable to an actuated component and the bonnet is securable to equipment comprising the actuated component; and wherein the top plate or the bonnet can be unsecured from the housing without the stem being unsecured from the actuated component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A linear actuator comprising:
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a) a reversible housing having a first end and a second end, wherein the first end and the second end are open and symmetrical with respect to one another; b) a top plate securable to the housing at the first end; c) a bonnet securable to the housing at the second end; d) a sealed cavity formed by the housing, the top plate, and the bonnet when the top plate and the bonnet are secured to the housing; e) a piston biased away from the bonnet; and f) a stem secured to the piston, wherein the stem is axially actuated by motion of the piston, and further wherein the stem passes through the bonnet to be securable to an actuated component and the bonnet is securable to equipment comprising the actuated component; and wherein the top plate or the bonnet can be unsecured from the housing without the stem being unsecured from the actuated component, and further wherein the housing can be reattached to the top plate or the bonnet with the first end and the second end transposed.
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Specification