A foldable trolley for supporting a stretcher, including a foldable frame having a pair of vertical support members that are rigidly secured to each other by a first horizontal member, and a pair of elongated frame members that are pivotally secured to the pair of vertical support members at their r
A foldable trolley for supporting a stretcher, including a foldable frame having a pair of vertical support members that are rigidly secured to each other by a first horizontal member, and a pair of elongated frame members that are pivotally secured to the pair of vertical support members at their respective bottom ends and rigidly connected by a second horizontal member, a wheel assembly including a first wheel and a second wheel rotatably attached to a corresponding vertical support member, and a plurality of clamp assemblies, each clamp assembly being mounted to a top end of each vertical support member and each elongated frame members, each clamp assembly being movable between a closed position and an open position.
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1. A foldable trolley for supporting a stretcher, comprising: a foldable frame including a pair of vertical support members that are rigidly secured to each other by a first horizontal member, and a pair of elongated frame members that are pivotally secured to the pair of vertical support members at
1. A foldable trolley for supporting a stretcher, comprising: a foldable frame including a pair of vertical support members that are rigidly secured to each other by a first horizontal member, and a pair of elongated frame members that are pivotally secured to the pair of vertical support members at their respective bottom ends and rigidly connected by a second horizontal member;a wheel assembly including a first wheel and a second wheel rotatably attached to a corresponding vertical support member; anda plurality of clamp assemblies, each clamp assembly being mounted to a top end of each vertical support member and each elongated frame members, each clamp assembly being movable between a closed position to engage the stretcher and an open position to disengage the stretcher,wherein the foldable frame is adjustable between an in-use position in which the pair of elongated frame members extend both rearwardly and upwardly from the bottom ends of the vertical support members, thereby forming an acute angle therebetween, to a stored position in which the pair of elongated frame members is substantially parallel to the pair of vertical support members. 2. The foldable trolley of claim 1, further comprising: a first folding strut having a first member that is pivotally secured to the first horizontal member at its proximal end, and a second member that is pivotally secured to second horizontal member, wherein a distal end of the first member is pivotally attached to a distal end of the second member,wherein the first folding strut is movable from an extended position in which the first member and the second member are axially aligned, thereby maintaining the foldable frame in the in-use position, to the stored position in which the pair of elongated frame members is substantially parallel to the pair of vertical support members. 3. The foldable trolley of claim 2, further comprising a leg assembly including a pair of elongated legs that are rigidly connected to each other by a third horizontal member and pivotally secured to the top ends of the pair or elongated frame members, wherein the leg assembly is pivotal between an in-use position in which the elongated legs extend rearwardly from the elongated frame members and a stored position in which the elongated legs are substantially parallel with the elongated frame members. 4. The foldable trolley of claim 3, further comprising: a second folding strut having a first member that is pivotally secured to the second horizontal member at its proximal end, and a second member that is pivotally secured to the third horizontal member, wherein a distal end of the first member is pivotally attached to a distal end of the second member,wherein the second folding strut is movable from an extended position in which the first member and the second member are axially aligned, thereby maintaining the leg assembly in the in-use position, to a folded position in which the pair of elongated legs is substantially parallel to the pair of elongated frame members and the leg assembly is in the stored position. 5. The foldable trolley of claim 4, wherein the second member of the second folding strut further comprises a first elongated portion that is pivotally connected to the first member of the second folding strut, a sleeve that is rotatably disposed about the third horizontal member, and a second elongated portion, wherein the first elongated portion and the second elongated portion extend radially outwardly from the sleeve opposite each other. 6. The foldable trolley of claim 5, further comprising a coil spring having a first end fixed to the fourth horizontal member and a second end fixed to the leg assembly, wherein the coil spring is disposed about the fourth horizontal member and biases the leg assembly from the in-use position to the stored position. 7. The foldable trolley of claim 4, further comprising a fourth horizontal member that rigidly connects the top ends of the elongated frame members. 8. The foldable trolley of claim 1, wherein each clamp assembly includes a base plate fixed to one of the top ends of the vertical support members and the elongated frame members, and a top plate that is pivotally secured to the base plate by a threaded bolt, wherein the threaded bolt is movable between a clamping position in which the top plate is non-rotatably fixed to the base plate and a release position in which the top plate is pivotal with respect to the base plate. 9. The foldable trolley of claim 1, wherein each clamp assembly includes a base plate fixed to one of the top ends of the vertical support members and the elongated frame members, a lever pivotally secured to the base plate, and a bail that is pivotally secured to the lever, wherein the lever is pivotal relative to the base plate between a clamping position in which the bail exerts downward force or a corresponding portion of the stretcher that is disposed between the bail and the base plate, and a release position in which the bail is pivotal away from the corresponding portion of the stretcher. 10. A foldable trolley and stretcher assembly, comprising: a stretcher including a pair of side rails and a support surface extending therebetween;a foldable frame including a pair of vertical support members that are rigidly secured to each other by a first horizontal member, and a pair of elongated frame members that are pivotally secured to the pair of vertical support members at their respective bottom ends and rigidly connected by a second horizontal member;a wheel assembly including a first wheel and a second wheel rotatably attached to a corresponding vertical support member; anda plurality of clamp assemblies, each clamp assembly being mounted to a top end of each vertical support member and each elongated frame members, each clamp assembly being movable between a closed position to engage the stretcher and an open position to disengage the stretcher,wherein the foldable frame is adjustable between an in-use position in which the pair of elongated frame members form an acute angle with the vertical support members, to a stored position in which the pair of elongated frame members is substantially parallel to the pair of vertical support members, andthe vertical support members are transverse to the corresponding side rails of the stretcher when the stretcher is secured to the foldable frame by the plurality of clamp assemblies. 11. The foldable trolley and stretcher assembly of claim 10, further comprising: a first folding strut having a first member that is pivotally secured to the first horizontal member at its proximal end, and a second member that is pivotally secured to second horizontal member, wherein a distal end of the first member is pivotally attached to a distal end of the second member,wherein the first folding strut is movable from an extended position in which the first member and the second member are axially aligned, thereby maintaining the foldable frame in the in-use position, to the stored position in which the pair of elongated frame members is substantially parallel to the pair of vertical support members. 12. The foldable trolley and stretcher assembly of claim 11, further comprising a leg assembly including a pair of elongated legs that are rigidly connected to each other by a third horizontal member and pivotally secured to the top ends of the pair or elongated frame members, wherein the leg assembly is pivotal between an in-use position in which the elongated legs extend rearwardly from the elongated frame members and a stored position in which the elongated legs are substantially parallel with the elongated frame members. 13. The foldable trolley and stretcher assembly of claim 12, further comprising: a second folding strut having a first member that is pivotally secured to the second horizontal member at its proximal end, and a second member that is pivotally secured to the third horizontal member, wherein a distal end of the first member is pivotally attached to a distal end of the second member,wherein the second folding strut is movable from an extended position in which the first member and the second member are axially aligned, thereby maintaining the leg assembly in the in-use position, to a folded position in which the pair of elongated legs is substantially parallel to the pair of elongated frame members and the leg assembly is in the stored position. 14. The foldable trolley and stretcher assembly of claim 13, wherein the second member of the second folding strut further comprises a first elongated portion that is pivotally connected to the first member of the second folding strut, a sleeve that is rotatably disposed about the third horizontal member, and a second elongated portion, wherein the first elongated portion and the second elongated portion extend radially outwardly from the sleeve opposite each other. 15. The foldable trolley and stretcher assembly of claim 13, further comprising a fourth horizontal member that rigidly connects the top ends of the elongated frame members. 16. The foldable trolley and stretcher assembly of claim 15, further comprising a coil spring having a first end fixed to the fourth horizontal member and a second end fixed to the leg assembly, wherein the coil spring is disposed about the fourth horizontal member and biases the leg assembly from the in-use position to the stored position. 17. The foldable trolley and stretcher assembly of claim 10, wherein each clamp assembly includes a base plate fixed to one of the top ends of the vertical support members and the elongated frame members, and a top plate that is pivotally secured to the base plate by a threaded bolt, wherein the threaded bolt is movable between a clamping position in which the top plate is non-rotatably fixed to the base plate and a release position in which the top plate is pivotal with respect to the base plate. 18. The foldable trolley and stretcher assembly of claim 10, wherein each clamp assembly includes a base plate fixed to one of the top ends of the vertical support members and the elongated frame members, a lever pivotally secured to the base plate, and a bail that is pivotally secured to the lever, wherein the lever is pivotal relative to the base plate between a clamping position in which the bail exerts downward force or a corresponding portion of the stretcher that is disposed between the bail and the base plate, and a release position in which the bail is pivotal away from the corresponding portion of the stretcher.
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이 특허에 인용된 특허 (4)
Darling, III, Charles W., Cart transportable mobile medical critical care point of need field installation units.
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