Abstract: Device and method for providing rotational power using power transmission are disclosed. The device enables multi-dimensional and angle-agnostic displacement of the rotational power output with respect to the input location and transference of high-torque and high-speed rotational movement, while preserving maximal efficiency and quick response. The device is a transmission gear that comprises at least two gear-links in a multi-link articulated gear (MLAG). Each of the links comprising at least two gear wheels. The transmission gear further comprising a common axis adapted to allow the links to rotate freely with respect to each other about the common axis and thus to allow change of the angle between the at least two links and thereby to change the distance between the input shaft and the output shaft.

Abstract: An in-wheel suspension system includes an assembly with a main arm that is pivotally connected at a connection point on the main arm to a shaft point of a wheel, a first linkage unit pivotally connected at one end to a first end of the main arm, and a second linkage unit pivotally connected at one end to a second end of the main arm. At least one second end of the first linkage unit and at least one second end of the second linkage unit, that are not connected to the main arm, are pivotally connectable each to a reference frame at a defined distance between them, such as to form a substantially “Z” like shape.

Abstract: An in-wheel suspension system includes an assembly with a main arm that is pivotally connected at a connection point on the main arm to a shaft point of a wheel, a first linkage unit pivotally connected at one end to a first end of the main arm, and a second linkage unit pivotally connected at one end to a second end of the main arm. At least one second end of the first linkage unit and at least one second end of the second linkage unit, that are not connected to the main arm, are pivotally connectable each to a reference frame at a defined distance between them, such as to form a substantially “Z” like shape.

Abstract: An in-wheel suspension system includes an assembly with a main arm that is pivotally connected at a connection point on the main arm to a shaft point of a wheel, a first linkage unit pivotally connected at one end to a first end of the main arm, and a second linkage unit pivotally connected at one end to a second end of the main arm. At least one second end of the first linkage unit and at least one second end of the second linkage unit, that are not connected to the main arm, are pivotally connectable each to a reference frame at a defined distance between them, such as to form a substantially “Z” like shape.

Abstract: Device and method for providing rotational power using power transmission are disclosed. The device enables multi-dimensional and angle-agnostic displacement of the rotational power output with respect to the input location and transference of high-torque and high-speed rotational movement, while preserving maximal efficiency and quick response. The device is a transmission gear that comprises at least two gear-links in a multi-link articulated gear (MLAG). Each of the links comprising at least two gear wheels. The transmission gear further comprising a common axis adapted to allow the links to rotate freely with respect to each other about the common axis and thus to allow change of the angle between the at least two links and thereby to change the distance between the input shaft and the output shaft.

Abstract: A wheel comprises a rim, a hub and a suspension unit. The wheel incorporates or is connectable to a torque source capable of producing torques up to a maximal torque for rotating the wheel around a rotation-axis. In this invention, the suspension unit includes at least one structural member, provided at least partially between the rim and the hub, configured to change in size and/or shape, relative to a nominal size and/or shape thereof, during displacements and/or rotations of the hub relative to a center point of the rim. The suspension unit also includes at least one motion resisting component adapted to retain the structural member at the nominal size and/or shape thereof under torques smaller than the maximal torque.

Abstract: Wheel with an in-wheel suspension system, and suspension member thereof. Wheel includes: stationary member including an axis, rotary member rotatable about the axis, and selective suspension system. The selective suspension system has at least one suspension member positioned between the stationary member and the rotary member, thereby providing a fixed distance therebetween, and retains the fixed distance when stressed up to a threshold value, and recoverably alters the fixed distance when stressed over the threshold value. The suspension member includes: cylindrical housing, piston slidably movable in the cylindrical housing, and compression spring whose first end is connected to the piston and second end is connected to the housing. The compression spring, when fully relaxed or compressed under the threshold value, maintains the housing and piston at a normally fixed distance. Applicable to wheelchairs and bicycles, among other self-propelled and powered vehicles.

Abstract: Landing gear apparatuses and applications, wherein wheels include embedded (in-wheel) high impact shock absorbing capabilities. Landing gear assembly includes: wheel with wheel rim connected to wheel hub, wheel rim encompasses inner boundary and has inner radius, wheel hub is movable and positionable to a nominal position in space within rim inner boundary; a wheel hub positioning mechanism, connected to wheel hub, selectively confining and positioning wheel hub within space to pre-determined position different from nominal position; and wheel hub suspension assembly, connected to wheel hub, operable in response to hub moving relative to pre-determined position, and including damper for absorbing shocks or/and dissipate kinetic energy during hub motion. When wheel is subjected to landing impact shock at least 2 meters-per-second vertical velocity, hub moves from or across pre-determined position towards rim inner boundary, along wheel hub maximal shifting path longer than rim inner radius.

Abstract: A wheel with a suspension system being connectable to a vehicle, like a wheel chair, comprises a hub (38) and a rim (34) rotatable about the axle (42) of the hub (38). Between the hub (38) and the rim (34), a number of support members (40) is located. The support members (40) are adapted to retain the distance when stressed up to a threshold value and recoverly alter the distanced when stressed over this threshold value. According to the invention, the support members (40) are comprising spring elements (50), damping strokes by compression if the support member (40) is compressed or elongated. The spring elements (50) are preferably preloaded.

Abstract: A wheel comprises a rim, a hub and a suspension unit. The wheel incorporates or is connectable to a torque source capable of producing torques up to a maximal torque for rotating the wheel around a rotation-axis. In this invention, the suspension unit includes at least one structural member, provided at least partially between the rim and the hub, configured to change in size and/or shape, relative to a nominal size and/or shape thereof, during displacements and/or rotations of the hub relative to a center point of the rim. The suspension unit also includes at least one motion resisting component adapted to retain the structural member at the nominal size and/or shape thereof under torques smaller than the maximal torque.

Abstract: A rotatable damper (100) comprises a mass (110) fully rotatable around an axis of rotation configured for self-damping a mechanical disturbance. The rotatable mass comprises a fully rotatable structure comprising an outer frame (2100) and an inner frame (2400) bound to rotate with the fully rotatable structure and further movable one relative to the other in at least one axis and a first chamber (3200), disposed between the outer frame and the inner frame, containing a fluid and comprising a first opening in direct communication with a first constriction (3300). The first chamber is readily compressible between a first portion of the outer frame and a second portion of the inner frame when forcibly approached by said mechanical disturbance. The first chamber, when compressed, is configured to expel at least partially the fluid through the first constriction, thereby facilitating damping of the mechanical disturbance.

Abstract: A wheel with a suspension system being connectable to a vehicle, like a wheel chair, comprises a hub (38) and a rim (34) rotatable about the axle (42) of the hub (38). Between the hub (38) and the rim (34), a number of support members (40) is located. The support members (40) are adapted to retain the distance when stressed up to a threshold value and recoverly alter the distanced when stressed over this threshold value. According to the invention, the support members (40) are comprising spring elements (50), damping strokes by compression if the support member (40) is compressed or elongated. The spring elements (50) are preferably preloaded.

Abstract: A rotatable damper (100) comprises a mass (110) fully rotatable around an axis of rotation configured for self-damping a mechanical disturbance. The rotatable mass comprises a fully rotatable structure comprising an outer frame (2100) and an inner frame (2400) bound to rotate with the fully rotatable structure and further movable one relative to the other in at least one axis and a first chamber (3200), disposed between the outer frame and the inner frame, containing a fluid and comprising a first opening in direct communication with a first constriction (3300). The first chamber is readily compressible between a first portion of the outer frame and a second portion of the inner frame when forcibly approached by said mechanical disturbance. The first chamber, when compressed, is configured to expel at least partially the fluid through the first constriction, thereby facilitating damping of the mechanical disturbance.