Manipulative treatment device having pivoting links between base and supports
AssigneeWorld Products Pty. Limited
InventorAlan C. Brady
Life of this patent
Estimating the term…
Abstract
A device for manipulative therapy has a base and two support plates carried above the base by a plurality of links pivoted to the base and the respective plates. The links are disposed at angles such that the plates are movable in arcuate paths away from each other and towards the base. A control, mounted on the base beneath each plate has a spring biased spool engaging the respective plate. The spool has a groove engaged by a detent when the respective plate is in its uppermost position, requiring a predetermined force to be applied to the upper surface of the plate to produce downward, arcuate movement of that plate.
Claims9
A device for manipulative therapy, comprising:
- a base;
- two support members disposed in side-by-side relationship and spaced from the base, each support member being movably connected to the base by a plurality of links which extend angularly between pivotal mountings on the base and pivotal mountings on the respective support member, the links connected to the respective support members constraining movement thereof to a predetermined path, the links connecting one of the support members extending in a different direction to the links connecting the other support member so that the support members move away from each other as the support members move towards the base;
- first stop means on the base for limiting movement of each said support member towards the base;
- second stop means between the base and the support members for limiting movement of the support members towards each other;
- and
- control means on the base for each said support member for controlling relative movement towards the base of the respective support member, the control means including inhibiting means for inhibiting initial relative movement of the support means from a rest position, and including return means for returning the support members to the rest position after movement therefrom.
A drop table device for manipulative treatment, comprising:
- a pair of plate members in side-by-side relationship, the plate members each being connected by four link members to a base, the link members being pivotally attached to the base and to the respective plate member and angularly disposed so that the plate members are arcuately movable relative to each other and the base from a closely spaced, rest position to a spaced apart, drop position;
- a support cushion on an upper surface of each said plate member;
- and
- control means for each said plate member mounted on the base and including a cylinder, a spool axially movable in the cylinder, an adjustable return spring biasing the spool towards the respective plate member, an annular groove on the spool, a detent biased into engagement with the groove, a wheel mounted on an upper end of the spool and a groove formed in the respective plate member providing a track for the wheel.
Dependencies are inferred from the claim text.