Abstract: An asymmetric folded spring flexure suspension system can enable an ultra-compact linear reciprocative device wherein a reciprocative mass suspended from a base by a single folded flexure assembly extends in a single generally radial direction perpendicular to the intended travel path. The folded flexure assembly can be configured as three side-by-side stacks of flexure strips of spring material, tied together at a “yoke-idler” end; at the opposite “working” end, a central stack of nominal width is tied to the mass, and, flanking the central stack, a pair of half-width stacks are tied to opposite sides of the base. In an embodiment for active vibration control, a cylindrical enclosure, of magnetically-permeable material and attached to the working end of the flexure assembly, contains a driver system including an internally-mounted pair of permanent magnets that provide a magnetic flux gap and also constitute the main portion of the mass.

Abstract: A family of flexure suspension systems for reciprocating linear motors, especially voice coil type, wherein basic flexure span elements, each a flat spring or typically a stack thereof, are arranged in a folded flexure configuration to suspend a moving armature from a base in a compliant manner with a precise linear stroke path along a central axis. Typically two tiers of folded flexures suspend the armature, each tier having at least two array members, each a balanced quad or triad side-by-side row of span elements, disposed in a plane about the central axis in a polar/radial or rectangular pattern. Inherent overall balance and cancellation of unwanted forces acting on the system components achieve a consistent operating air gap, eliminate undesired torque imposed on the armature, coil, and entire mechanical assembly, and reduce mass and space requirements.

Abstract: An inertial actuator for active vibration control utilizes a single cylindrical actuator module of the “voice coil” type. A moving armature assembly, including a soft iron shell with a tubular sleeve coaxially surrounding a core with two permanent magnets and corresponding pole plates, is suspended compliantly by a flexure assembly including a multiple-stack array of shaped flexure strips and a pair of end support flexure plates mounted to a base. Two magnetically charged annular air gaps at the pole plates in the moving armature traverse two corresponding annular coils wound in a tubular bobbin that extends as a heat-sinking mounting column attached to the base. This form of inertial actuator provides cost benefits along with improved performance and reliability due to the stability of the moving parts and uniformity of linear motion.

Abstract: A business form with adhesive for window mounting comprises a back sheet and a front sheet. The top edge of the top sheet is coextensive with the top edge of the bottom sheet, but the bottom edge of the top sheet is inwardly offset from the bottom edge of the bottom sheet. A line of adhesive is provided to adhere the back surface of the top sheet to the front surface of the back sheet. The adhesive surfaces of first and second adhesive strips overlap the top and bottom edges, respectively, of the back sheet to define respective top and bottom adhesive areas extending outwardly of the top and bottom edges of the back sheet. First and second releasable liner strips are substantially coextensive with and adhesively attached to the top and bottom adhesive areas, respectively, at the adhesive surfaces. Both sheets have a line of tractor feed holes positioned below the first adhesive strip.

Abstract: An apparatus for translating rotational movement into linear motion primarily for the purpose of repeatably generating and maintaining a constricting force. A means to employ mechanical advantage to amplify the translation of rotational energy into linear energy and provides for the equally repeatable release of said forces.