| Patent application number | Description | Published |
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| 20080318739 | Walking Assistance Device - A walking assistance device having a leg link connected to a load transfer portion via a first joint and to a foot attachment portion via a second joint, and having an intermediate third joint moving such that a distance between the first joint and the second joint is variable; a drive source for the third joint; and a battery for the drive source. When in an upstanding position, force in the forward-backward direction is prevented from acting on the load transfer portion to enhance stability. Also, a moment of inertia of the leg link is decreased to curtail a load applied to the leg of the user. The drive source and the battery are located at positions higher than the third joint, and when the user is in an upstanding position, a plane passing through the second joint lies between the drive source and the battery. | 12-25-2008 |
| 20090014042 | WALK ASSISTANCE DEVICE - A walk assistance device capable of transmitting a force generated by a leg link to a user's trunk via a load transfer portion, wherein the leg link includes an upper first link portion connected to the load transfer portion via a first joint portion, a lower second link portion connected to a foot attachment portion via a second joint portion, a middle third joint portion connecting the first link portion to the second link portion such that a distance between the first joint portion and the second joint portion is variable, and a driving source that drives the third joint portion. The moment of inertia around the first joint portion of the leg link is reduced to decrease a load on the user's leg in walking. The driving source is disposed above the third joint portion of the first link portion so that the center-of-gravity of the entire leg link is located above the third joint portion. In the case where the driving source includes an electric motor and a reduction gear, the electric motor is disposed above the reduction gear. | 01-15-2009 |
| 20100063424 | WALKING ASSISTANCE DEVICE - A walking assistance device having a seating member ( | 03-11-2010 |
| 20100069799 | WALKING ASSIST DEVICE - The present invention provides a walking assist device including a seat member ( | 03-18-2010 |
| 20100145239 | WALKING ASSISTANCE DEVICE - A walking assistance device has a load transmitting assembly, a foot-worn assembly, and a leg link provided between the load transmitting assembly and the foot-worn assembly. The foot-worn assembly has a ground contact member, on which a user's foot, and a connecting member which connects the ground contact member to a joint at a lower end of the leg link. The ground contact member is provided with tread force sensors and the foot-worn assembly permits detection of a tread force. The connecting member is formed so as to rise in a cantilever manner from one lateral side of the ground contact member. The tread force sensors are installed in at least one location adjacent to the heel of the user's foot and in at least two locations adjacent to toes of the user's foot, with the latter two locations being laterally spaced apart. | 06-10-2010 |
| 20100204621 | WALKING ASSIST DEVICE - A walking assist device having a load transmit portion, a leg link connected to the load transmit portion, and a driving source capable of driving the leg link in a direction to raise a seat member, so that at least a partial weight of a user may be supported by the leg link through the load transmit portion. An electric component to be used for controlling the driving source can be mounted on the walking assist device without degrading the compactness of the walking assist device. At least a part of the leg link is constituted of a cylindrical link member in which at least the electric component, such as a motor driver to be used for the control of the driving source, is partially housed. The walking assist device also includes a heat transfer member for absorbing the heat of the electric component by the cylindrical link member. The heat transfer member is thermally connected to a side plate of the cylindrical link member directed toward the side opposite to the leg of the user. | 08-12-2010 |
| 20100210980 | WALKING ASSIST DEVICE - A walking assist device is equipped with a load transmit portion, a foot attachment portion fitted to a foot of a user, and a leg link provided between the load transmit portion and the foot attachment portion. The foot attachment portion is equipped with a connecting member connected to the lower end of the leg link at a position forward of an ankle of the user while having at least a degree of rotational freedom around an axis line in a horizontal direction seen from front, and the connecting member is prevented from wobbling back and forth from the change in the direction of the load transmitted from the leg link. The foot attachment portion is equipped with the footplate member having a rigid plate capable of being stepped on by the foot of the user at outside an acting range in a sagittal plane of the load transmitted from the leg link to the connecting member. The connecting member is coupled to the footplate member so as to limit the rotation with respect to the footplate member round the axis line in the horizontal direction as seen from front. | 08-19-2010 |
| Patent application number | Description | Published |
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| 20090281636 | WALKING ASSIST DEVICE - Provided is a walking assist device including a load transmit portion, a ground contacting portion capable of using a commercially available shoe, and a leg link disposed therebetween. The ground contacting portion is composed of a footboard for supporting the shoe thereon. The footboard is provided with a connection member connected to the leg link and a front holding member and a rear holding member for stably holding a front vamp portion and a rear vamp portion, respectively, of the shoe in an anteroposterior direction. When a pressure sensor for detecting a stepping force from a user is provided in the footboard, the front holding member is located ahead of the pressure sensor. | 11-12-2009 |
| 20090292232 | WALKING ASSIST DEVICE - Provided is a walking assist device including a seat member, a leg link having a joint portion, and a driving source for the joint portion. The walking assist device allows a user to rest by sitting on the seat member. Accordingly, the walking assist device further includes a lock mechanism disposed in the joint portion and an operation unit for the lock mechanism. When the operation unit is switched on, the driving source is controlled to increase an up-pushing force on the seat member. A variation rate on the up-pushing force is increased with time to a given value where the lock mechanism is initiated. | 11-26-2009 |
| 20100114332 | ANKLE JOINT STRUCTURE OF WALKING ASSISTANCE DEVICE - An ankle joint structure of a walking assistance device is capable of protecting a user from feeling uncomfortable by properly following the foot motions of the user. An ankle joint has a turn shaft member enabling a ground contact assembly to turn relative to a leg link, a lateral rotation shaft member enabling the ground contact assembly to laterally rotate relative to the leg link, and a longitudinal rotation shaft member enabling the ground contact assembly to longitudinally rotate relative to the leg link. The turn shaft member is connected to the leg link, the longitudinal rotation shaft member is connected to the ground contact assembly, and the lateral rotation shaft member is disposed between the turn shaft member and the longitudinal rotation shaft member. | 05-06-2010 |
| 20100121233 | WALKING ASSISTANCE DEVICE - A walking assistance device having an ankle joint limited in a swingable range in a rolling direction, enabling a user to open his/her legs apart more easily. The walking assistance device includes a seating member | 05-13-2010 |
