Abstract: A direct drive brushless motor including a plurality of rotational components and a plurality of non-rotational components. Ones of the pluralities of rotational and non-rotational components form a dual magnetic circuit. The plurality of rotational components includes a center rotation shaft circumscribed by a plurality of coils and a coil termination plate configured to support the plurality of coils. The plurality of non-rotational components includes a plurality of outer magnets arranged around the plurality of coils in a Halbach configuration and a plurality of inner magnets arranged in a Halbach configuration between the coils and the shaft. A flex cable having one or more leads provides electrical current to the plurality of coils without the use of brushes.

Abstract: A direct drive brushless motor including a plurality of rotational components and a plurality of non-rotational components. Ones of the pluralities of rotational and non-rotational components form a dual magnetic circuit. The plurality of rotational components includes a center rotation shaft circumscribed by a plurality of coils and a coil termination plate configured to support the plurality of coils. The plurality of non-rotational components includes a plurality of outer magnets arranged around the plurality of coils in a Halbach configuration and a plurality of inner magnets arranged in a Halbach configuration between the coils and the shaft. A flex cable having one or more leads provides electrical current to the plurality of coils without the use of brushes.

Abstract: A direct drive brushless motor including a plurality of rotational components and a plurality of non-rotational components. Ones of the pluralities of rotational and non-rotational components form a dual magnetic circuit. The plurality of rotational components includes a center rotation shaft circumscribed by a plurality of coils and a coil termination plate configured to support the plurality of coils. The plurality of non-rotational components includes a plurality of outer magnets arranged around the plurality of coils in a Halbach configuration and a plurality of inner magnets arranged in a Halbach configuration between the coils and the shaft. A flex cable having one or more leads provides electrical current to the plurality of coils without the use of brushes.

Abstract: A direct drive motor for a robotic finger. The direct drive motor includes a plurality of outer magnets and a coil assembly including a plurality of coils surrounded by the plurality of outer magnets. The plurality of coils are configured to generate a magnetic field when current is conducted through them such that the coil assembly rotates relative to the plurality of outer magnets. The direct drive motor further includes a plurality of inner magnets surrounded by the plurality of coils and a core element surrounded by the plurality of inner magnets. A center rotation shaft is positioned within an interior space circumscribed by the core element.

Abstract: A linear actuator, comprising a base housing, a top housing, and a piston assembly. The base housing may include at least one recess configured to restrain at least one magnet in three dimensions and a channel configured to receive a linear guide. The top housing may be fixedly attached to the base housing and may include at least one recess configured to restrain another at least one magnet in three dimensions. The piston assembly may include at least one coil bobbin, a shaft, a linear encoder scale, and a flex cable, wherein the piston assembly may be positioned between the base housing and the top housing.

Abstract: A linear actuator, comprising a base housing, a top housing, and a piston assembly. The base housing may include at least one recess configured to restrain at least one magnet in three dimensions and a channel configured to receive a linear guide. The top housing may be fixedly attached to the base housing and may include at least one recess configured to restrain another at least one magnet in three dimensions. The piston assembly may include at least one coil bobbin, a shaft, a linear encoder scale, and a flex cable, wherein the piston assembly may be positioned between the base housing and the top housing.

Abstract: A direct drive motor for a robotic finger. The direct drive motor includes a plurality of outer magnets and a coil assembly including a plurality of coils surrounded by the plurality of outer magnets. The plurality of coils are configured to generate a magnetic field when current is conducted through them such that the coil assembly rotates relative to the plurality of outer magnets. The direct drive motor further includes a plurality of inner magnets surrounded by the plurality of coils and a core element surrounded by the plurality of inner magnets. A center rotation shaft is positioned within an interior space circumscribed by the core element.

Abstract: An actuator apparatus includes a magnet housing defining an interior volume between a first opening at a first end and a second opening at a second end. Multiple magnets are included within the magnet housing. A piston assembly includes a piston housing, a coil and a shaft. A magnetic pole is configured to be received through the second opening of the magnet housing and within the interior volume. The magnetic pole defines an interior lumen and an opening in communication with the interior lumen. At least a portion of the piston assembly is configured to be movably received through the first opening of the magnet housing and within the interior volume such that the magnetic pole is received within the interior region of the piston housing and at least a portion of the shaft is received within the interior lumen of the magnetic pole.

Abstract: A linear actuator, comprising a base housing, a top housing, and a piston assembly. The base housing may comprise at least one recess configured to restrain at least one magnet in three dimensions and a channel configured to receive a linear guide. The top housing may be fixedly attached to the base housing and may comprise at least one recess configured to restrain another at least one magnet in three dimensions. The piston assembly may comprise at least one coil bobbin, a shaft, a linear encoder scale, and a flex cable, wherein the piston assembly may be positioned between the base housing and the top housing.

Abstract: A linear actuator, comprising a base housing, a top housing, and a piston assembly. The base housing may comprise at least one recess configured to restrain at least one magnet in three dimensions and a channel configured to receive a linear guide. The top housing may be fixedly attached to the base housing and may comprise at least one recess configured to restrain another at least one magnet in three dimensions. The piston assembly may comprise at least one coil bobbin, a shaft, a linear encoder scale, and a flex cable, wherein the piston assembly may be positioned between the base housing and the top housing.

Abstract: This invention describes a compact linear moving coil actuator that incorporates a piston bobbin coil assembly that provides a shaft with linear reciprocal movement. Optionally, a rotary motor can be coupled to the shaft to provide rotary reciprocal movement. The piston and bobbin sections of the piston bobbin coil assembly may be integrally formed as a single unitary piece and easily changed in size and/or configuration during manufacture to enable easier and more cost-effective assembly of various actuator sizes and configurations. Additionally, the compact size of the actuator requires less work space and also allows multiple actuators to be positioned next to each for various applications.