Patient support apparatus having central dual control system of casters
AssigneeLinet spol. s.r.o.
InventorVladimir Kolar
Life of this patent
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Abstract
A patient support apparatus having a central dual control system of casters with an actuating pedal. Two opposite casters are connected by a control shaft with hexagonal cross section. Both control shafts are mutually coupled via a connecting member to a linkage rod. A servomotor with a rack is coupled to the linkage rod. The servomotor is configured to change a position of the rack of the servomotor and thus change a position of the central dual control system of casters upon manual change of position of the actuating pedal and/or upon electrical activation of the servomotor to change a position of the actuating pedal to another position of the central dual control system of casters.
Claims14
A patient support apparatus comprising:
- a first pair of casters;
- a second pair of casters;
- a first control shaft operatively connected to the first pair of casters;
- a second control shaft operatively connected to the second pair of casters;
- a linkage rod operatively coupling the first control shaft and the second control shaft;
- a servomotor operatively coupled to the linkage rod or to at least one of the first control shaft and the second control shaft;
- at least one micro switch;
- a pinion;
- a cogwheel engaged with the pinion;
- and
- a rack configured to be moved by the cogwheel;
- wherein the rack comprises a rack protrusion configured to engage the linkage rod;
- wherein a lateral side of the rack comprises at least one lower hole and at least one upper hole;
- and
- wherein the at least one micro switch cooperates with the at least one lower hole and the at least one upper hole to indicate a position of the rack.
A patient support apparatus comprising:
- a first pair of casters;
- a second pair of casters;
- a first control shaft connected to the first pair of casters;
- a second control shaft connected to the second pair of casters;
- a linkage rod operatively coupling the first control shaft and the second control shaft;
- a servomotor operatively coupled to the linkage rod or to at least one of the first control shaft and the second control shaft;
- at least one micro switch;
- a pinion;
- a cogwheel engaged with the pinion;
- and
- a toothed segment movable by the cogwheel;
- wherein a side of the toothed segment comprises at least one hole;
- and
- wherein the at least one micro switch cooperates with the at least one hole to indicate a position of the toothed segment.
Dependencies are inferred from the claim text.