Compact lifter assembly
OwnerTimothy N. Thomasinventor
Life of this patent
Estimating the term…
Abstract
A compact lifter assembly having a base plate and a first intermediate plate rigidly connected by a first pair of shafts. A second intermediate plate is slidably attached on the first pair of shafts to be disposed between the base plate and the first intermediate plate. A second pair of shafts extend from the second intermediate plate, through apertures in the first intermediate plate for rigid connection to a mounting plate. A linear actuator centrally located on the base plate is actuated for lifting the mounting plate and a second intermediate plate relative to the base plate. The shafts are rigidly connected to the respective plates by a retaining ring and split taper plugged shaft retention to provide a zero clearance shaft joint connection.
Claims15
A compact lifter assembly comprising:
- a base member supportable on a surface;
- a top mounting plate spaced from said base member;
- an actuator housed in the center of the compact lifter assembly and extending from the base member, said actuator having a movable rod having an opposing end secured to a center of the top mounting plate;
- a movable intermediate support plate;
- and a stationary intermediate support plate, said movable intermediate support plate slidably disposed between said base member and said stationary intermediate support plate, wherein said movable intermediate support plate is rigidly connected to said top mounting plate, and said stationary intermediate support plate fixedly disposed between said movable intermediate support plate and said top mounting plate, wherein said stationary intermediate support plate is rigidly connected to said base member.
A compact lifter assembly actuated by a linear actuator comprising:
- a base member supportable on a surface wherein the linear actuator is securely attached to said base member;
- a stationary intermediate plate rigidly connected to said base member, wherein said stationary intermediate plate is spaced from said base member by a first pair of parallel shafts symmetrically spaced on said base member from the linear actuator;
- a movable intermediate plate slidably connected to the first pair of shafts and fixedly disposed between said base member and the stationary intermediate plate;
- and
- a mounting plate rigidly connected to the movable intermediate plate by a second pair of shafts, wherein the linear actuator has a reciprocally moving rod responsive to actuation of said actuator and attached to said mounting plate, wherein said mounting plate and movable intermediate plate move when said linear actuator is activated.
A compact lifter assembly actuated by a linear actuator comprising:
- a base member supportable on a surface wherein the linear actuator is securely attached to said base member;
- a stationary intermediate plate rigidly connected to said base member, wherein said stationary intermediate plate is spaced from said base member by a first pair of parallel shafts symmetrically spaced on said base member from the linear actuator;
- a movable intermediate plate slidably connected to the first pair of shafts;
- and
- a mounting plate rigidly connected to the movable intermediate plate, wherein the linear actuator has a reciprocally moving rod responsive to actuation of said actuator and attached to said mounting plate wherein said mounting plate is movable when said linear actuator is activated,
- wherein the movable intermediate plate moves between the base plate and the stationary intermediate plate coinciding with the movement of the mounting plate,
- wherein the movable intermediate plate is connected to the mounting plate by a second pair of parallel shafts,
- wherein the first pair of parallel shafts are connected to the base member and the stationary intermediate plate and the second pair of parallel shafts are connected to the mounting plate and the movable intermediate plate by connecting means, wherein the connecting means includes an aperture in each respective plate for receiving the respective shaft and a split taper plugged shaft retention for securing the respective shaft within the aperture of the respective plate, creating a rigid, zero clearance ring retained joint between each respective shaft and the respective plate.
Dependencies are inferred from the claim text.