Residual magnetic devices and methods
First Claim
Patent Images
1. A clutch for use in coupling a first element to a second element, the clutch comprising:
- a core housing coupled to one of the first element and the second element;
an armature positioned adjacent to the core housing, the armature coupled to one of the first element and the second element; and
a coil positioned in the core housing, the coil receiving a magnetization current to create a substantially closed magnetic path including an air gap from approximately 0.002 inches to approximately 0.005 inches between the core housing and the armature in order to create an irreversible residual magnetic force with a magnetic air gap energy of at least 6652 (line-amp-turn)/cm3 and to couple the first element to the second element in the subsequent absence of the magnetization current and in the absence of any other magnetic force.
1 Assignment
0 Petitions
Accused Products
Abstract
Residual magnetic locks, brakes, rotation inhibitors, clutches, actuators, and latches. The residual magnetic devices can include a core housing and an armature. The residual magnetic devices can include a coil that receives a magnetization current to create an irreversible residual magnetic force between the core housing and the armature.
-
Citations
19 Claims
-
1. A clutch for use in coupling a first element to a second element, the clutch comprising:
-
a core housing coupled to one of the first element and the second element; an armature positioned adjacent to the core housing, the armature coupled to one of the first element and the second element; and a coil positioned in the core housing, the coil receiving a magnetization current to create a substantially closed magnetic path including an air gap from approximately 0.002 inches to approximately 0.005 inches between the core housing and the armature in order to create an irreversible residual magnetic force with a magnetic air gap energy of at least 6652 (line-amp-turn)/cm3 and to couple the first element to the second element in the subsequent absence of the magnetization current and in the absence of any other magnetic force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A clutch for use in coupling a first element to a second element, the clutch comprising:
-
electromagnetic assembly means coupled to the first element and the second element; and controller means for providing a magnetization current to the electromagnetic assembly means to create a substantially closed magnetic path including an air gap from approximately 0.002 inches to approximately 0.005 inches in order to create an irreversible residual magnetic force with a magnetic air gap energy of at least 6652 (line-amp-turn)/cm3 and to couple the first element to the second element in a subsequent absence of the magnetization current and in the absence of any other magnetic force. - View Dependent Claims (16, 17, 18, 19)
-
Specification