Residual magnetic devices and methods
First Claim
Patent Images
1. A controller for an apparatus including a core housing, a coil, and an armature, the controller comprising:
- an electrical circuit connected to the coil to(i) provide a magnetization current to the coil to create an irreversible residual magnetic force with a residual magnetic air gap energy of at least 6700 (line−
amp−
turn)/cm3 between the armature and the core housing to couple the armature and the core housing; and
to(ii) stop supplying the magnetization current to the coil, wherein the armature and the core housing remain coupled by the irreversible residual magnetic force when the magnetization current is no longer provided.
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.
200 Citations
17 Claims
-
1. A controller for an apparatus including a core housing, a coil, and an armature, the controller comprising:
an electrical circuit connected to the coil to (i) provide a magnetization current to the coil to create an irreversible residual magnetic force with a residual magnetic air gap energy of at least 6700 (line−
amp−
turn)/cm3 between the armature and the core housing to couple the armature and the core housing; and
to(ii) stop supplying the magnetization current to the coil, wherein the armature and the core housing remain coupled by the irreversible residual magnetic force when the magnetization current is no longer provided. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
11. A method of controlling an apparatus having a core housing, a coil, and a armature, the method comprising:
-
providing a magnetization current to the coil to create an irreversible residual magnetic force with a residual magnetic air gap energy of at least 6700 (line-amp-turn)/cm3 between the armature and the core housing to couple the armature and the core housing; and stopping supply of the magnetization current to the coil; and retaining the armature and the core housing in a coupled relationship by the irreversible residual magnetic force when the magnetization current is no longer provided. - View Dependent Claims (12, 13, 14)
-
-
15. An apparatus comprising:
-
a core housing; an armature; a coil positioned in the core housing; and a controller configured to (i) provide a magnetization current to the coil to create an irreversible residual magnetic force with a residual magnetic air gap energy of at least 6700 (line−
amp−
turn)/cm3 between the armature and the core housing to couple the armature and the core housing; and
to(ii) stop supplying the magnetization current to the coil, wherein the armature and the core housing remain coupled by the irreversible residual magnetic force when the magnetization current is no longer provided by the controller. - View Dependent Claims (16, 17)
-
Specification