Force balancing assembly for transducers
First Claim
Patent Images
1. A force balancing assembly for use in a force sensitive instrument comprising;
- a support member;
a force sensing movable membermeans including at least one first hinge element for mounting said force sensing movable member on said support membera force restoring element; and
means including at least one hinge element for mounting said force restoring element on said movable member wherein said means is effective to permit movement of said force restoring element with respect to said movable member.
2 Assignments
0 Petitions
Accused Products
Abstract
In order to reduce bias errors resulting from mounting of a force restoring coil assembly element of a force balancing transducer, the force coil assembly is suspended by means of one or more hinges from a force sensing movable member, which includes position pick-off means, that in turn is connected by hinging means to a support member. The effects of strain may further be reduced by locating the first hinges essentially along the axis of the centroid of the pick-off means.
44 Citations
22 Claims
-
1. A force balancing assembly for use in a force sensitive instrument comprising;
-
a support member; a force sensing movable member means including at least one first hinge element for mounting said force sensing movable member on said support member a force restoring element; and means including at least one hinge element for mounting said force restoring element on said movable member wherein said means is effective to permit movement of said force restoring element with respect to said movable member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A force balancing assembly for use in a force sensitive instrument comprising:
-
a support ring; a force sensitive movable member including at least one capacitive pick-off plate; a first flexure for pendulously securing said movable member to said support ring; a force restoring coil; and a second flexure for pendulously connecting said force restoring coil to said movable member. - View Dependent Claims (10, 11)
-
-
12. A proof mass assembly for use in an accelerometer that includes an upper and a lower magnet structure, comprising:
-
a support ring interposed between and supported by the upper and lower magnet structures; a substantially planar force sensitive movable member configured to fit within said support ring including at least one capacitive pick-off plate secured to said movable member wherein said movable member is configured with a generally centrally located aperture; at least one flexure integrally connected to said ring and said movable member, effective to mount said movable member in general planar alignment with said support ring; a restoring force coil and support structure configured to fit within said aperture of said movable member; and at least one flexure integrally connected to said coil support structure and said movable member effective to mount said force coil within said aperture and to transmit a restoring force from said coil to said movable member. - View Dependent Claims (13, 14, 15)
-
-
16. A force balancing assembly for use in a force sensitive instrument comprising:
-
a support member; a force responsive movable member; means including at least one hinge element for securing one end of said force responsive movable member to said support member; a force restoring element; means including at least one hinge element for securing said force restoring element to the other end of said movable member; and a pick-off element secured to said hinge end of said movable member. - View Dependent Claims (17)
-
-
18. A force balancing assembly for use in a force sensitive instrument comprising:
-
a support member; a force responsive movable member; means for securing said movable member to said support member such that said movable member is free to rotate about an axis; a force restoring element secured to said movable member by means of at least one hinge element on one side of said axis; and a pick-off element secured to said movable element on the other side of said axis. - View Dependent Claims (19, 20, 21, 22)
-
Specification