Abstract: A microspeaker includes a frame defining a space; and an actuator positioned within the space, the actuator including a diaphragm configured to vibrate in a first direction during operation. A center axis of the diaphragm extends in the first direction. A plate assembly mechanically couples to the frame and defines a path for venting fluid from the space. The plate assembly includes: a first plate extending in a plane and defining first apertures that are offset from the center axis in the plane; and a second plate defining a second aperture intersected by the center axis. The second plate includes: an inner recessed region abutting the second aperture; and an outer non-recessed region. The first plate is mechanically coupled to the second plate, the first plate and the inner region of the second plate defining a channel that fluidly couples the first apertures to the second aperture.

Abstract: A microspeaker includes a frame defining a space; and an actuator positioned within the space, the actuator including a diaphragm configured to vibrate in a first direction during operation. A center axis of the diaphragm extends in the first direction. A plate assembly mechanically couples to the frame and defines a path for venting fluid from the space. The plate assembly includes: a first plate extending in a plane and defining first apertures that are offset from the center axis in the plane; and a second plate defining a second aperture intersected by the center axis. The second plate includes: an inner recessed region abutting the second aperture; and an outer non-recessed region. The first plate is mechanically coupled to the second plate, the first plate and the inner region of the second plate defining a channel that fluidly couples the first apertures to the second aperture.

Abstract: A microspeaker includes a frame defining a space; and an actuator positioned within the space, the actuator including a diaphragm configured to vibrate in a first direction during operation. A center axis of the diaphragm extends in the first direction. A plate assembly mechanically couples to the frame and defines a path for venting fluid from the space. The plate assembly includes: a first plate extending in a plane and defining first apertures that are offset from the center axis in the plane; and a second plate defining a second aperture intersected by the center axis. The second plate includes: an inner recessed region abutting the second aperture; and an outer non-recessed region. The first plate is mechanically coupled to the second plate, the first plate and the inner region of the second plate defining a channel that fluidly couples the first apertures to the second aperture.

Abstract: An actuator module includes a base plate extending in a plane, a voice coil connected to the base plate, and a magnet assembly that includes a back side facing the base plate and a front side facing away from the base plate. The magnet assembly includes a base layer and sidewalls defining a cup and an inner element including a center magnet mounted within the cup. The sidewalls include a first and second pair of sidewalls. The actuator module includes a rigid frame attached to the base plate, the rigid frame including four stubs. The actuator module also includes a plurality of springs suspending the magnet assembly relative to the frame and base plate, the plurality of springs including a first spring attached to the frame at a first pair of the four stubs and a second spring attached to the frame at a second pair of the four stubs.

Abstract: A device includes: a panel and an electromagnetic actuator mechanically coupled to a rear side of the panel to form a panel audio loudspeaker, the electromagnetic actuator comprising a coil attached to the rear side of the panel and a magnet suspended with respect to the coil via one or more spring elements, the coil defining an axis, wherein during operation of the device an electric current through the coil varies a relative displacement of the magnet with respect to the coil along the axis. The device includes: a chassis supporting the panel, the chassis comprising a housing for the device, the housing comprising a rear panel on an opposite side of the device from the panel; and a grounding assembly positioned along the axis between the magnet and the rear panel of the device, wherein the grounding assembly mechanically grounds the magnet to the chassis.

Abstract: An application for monitoring heating ventilation and air conditioning (HVAC) may include receiving, at a server, sensor signals from sensors disposed within a heating ventilation and air conditioning (HVAC) system, receiving, at the server, one or more HVAC control signals indicating one or more currently active control functions assigned by an HVAC controller, comparing a threshold value to one or more of the plurality of measured sensor values, determining, via the server, based on the one or more currently active control functions that a current condition level of the HVAC system is less than a threshold value, and generating, via the server, an alert to identify the current condition level as a potential failure.

Abstract: An actuator module includes a base plate extending in a plane, a voice coil connected to the base plate, and a magnet assembly that includes a back side facing the base plate and a front side facing away from the base plate. The magnet assembly includes a base layer and sidewalls defining a cup and an inner element including a center magnet mounted within the cup. The sidewalls include a first and second pair of sidewalls. The actuator module includes a rigid frame attached to the base plate, the rigid frame including four stubs.

Abstract: An actuator module includes a base plate extending in a plane, a voice coil connected to the base plate, and a magnet assembly that includes a back side facing the base plate and a front side facing away from the base plate. The magnet assembly includes a base layer and sidewalls defining a cup and an inner element including a center magnet mounted within the cup. The sidewalls include a first and second pair of sidewalls. The actuator module includes a rigid frame attached to the base plate, the rigid frame including four stubs. The actuator module also includes a plurality of springs suspending the magnet assembly relative to the frame and base plate, the plurality of springs including a first spring attached to the frame at a first pair of the four stubs and a second spring attached to the frame at a second pair of the four stubs.

Abstract: An actuator module includes a base plate extending in a plane, a voice coil connected to the base plate, and a magnet assembly that includes a back side facing the base plate and a front side facing away from the base plate. The magnet assembly includes a base layer and sidewalls defining a cup and an inner element including a center magnet mounted within the cup. The sidewalls include a first and second pair of sidewalls. The actuator module includes a rigid frame attached to the base plate, the rigid frame including four stubs. The actuator module also includes a plurality of springs suspending the magnet assembly relative to the frame and base plate, the plurality of springs including a first spring attached to the frame at a first pair of the four stubs and a second spring attached to the frame at a second pair of the four stubs.

Abstract: An actuator module includes a base plate extending in a plane, a voice coil connected to the base plate, and a magnet assembly that includes a back side facing the base plate and a front side facing away from the base plate. The magnet assembly includes a base layer and sidewalls defining a cup and an inner element including a center magnet mounted within the cup. The sidewalls include a first and second pair of sidewalls. The actuator module includes a rigid frame attached to the base plate, the rigid frame including four stubs. The actuator module also includes a plurality of springs suspending the magnet assembly relative to the frame and base plate, the plurality of springs including a first spring attached to the frame at a first pair of the four stubs and a second spring attached to the frame at a second pair of the four stubs.

Abstract: A panel audio loudspeaker includes a panel extending in a plane and an actuator coupled to the panel and configured to couple vibrations to the panel to cause the panel to emit audio waves. The actuator includes a rigid frame attached to a surface of the panel and the frame includes a portion extending perpendicular to the panel surface. The actuator also includes an elongate flexure attached at one end to the portion of the frame extending perpendicular to the panel surface, the flexure extending parallel to the plane and having a first width where the flexure is attached to the frame different from a second width where the flexure is unattached to the frame. The actuator further includes an electromechanical module attached to a portion of the flexure unattached to the frame, the electromechanical module being configured to displace an end of the flexure during operation of the actuator.

Abstract: An actuator, attached to a panel extending in a plane, includes a frame and a magnetic circuit assembly that includes a magnet and a voice coil, the magnet and voice coil being moveable relative to each other during operation of the actuator along an axis perpendicular to the panel's plane. The actuator further includes one or more suspension members attaching the frame to a first component of the magnetic circuit assembly. Each suspension member includes a segment attaching the suspension member to the frame at an attachment point and a first arm extending away from the attachment point to an end attached to the first component of the magnetic circuit assembly. During operation of the actuator the first arm of the one or more suspension members flex to accommodate axial displacements of the magnet relative to the voice coil.

Abstract: An actuator, attached to a panel extending in a plane, includes a frame and a magnetic circuit assembly that includes a magnet and a voice coil, the magnet and voice coil being moveable relative to each other during operation of the actuator along an axis perpendicular to the panel's plane. The actuator further includes one or more suspension members attaching the frame to a first component of the magnetic circuit assembly. Each suspension member includes a segment attaching the suspension member to the frame at an attachment point and a first arm extending away from the attachment point to an end attached to the first component of the magnetic circuit assembly. During operation of the actuator the first arm of the one or more suspension members flex to accommodate axial displacements of the magnet relative to the voice coil.

Abstract: A panel audio loudspeaker includes a panel extending in a plane and an actuator coupled to the panel and configured to couple vibrations to the panel to cause the panel to emit audio waves. The actuator includes a rigid frame attached to a surface of the panel and the frame includes a portion extending perpendicular to the panel surface. The actuator also includes an elongate flexure attached at one end to the portion of the frame extending perpendicular to the panel surface, the flexure extending parallel to the plane and having a first width where the flexure is attached to the frame different from a second width where the flexure is unattached to the frame. The actuator further includes an electromechanical module attached to a portion of the flexure unattached to the frame, the electromechanical module being configured to displace an end of the flexure during operation of the actuator.

Abstract: A panel audio loudspeaker includes a panel extending in a plane and an actuator coupled to the panel and configured to couple vibrations to the panel to cause the panel to emit audio waves. The actuator includes a rigid frame attached to a surface of the panel and the frame includes a portion extending perpendicular to the panel surface. The actuator also includes an elongate flexure attached at one end to the portion of the frame extending perpendicular to the panel surface, the flexure extending parallel to the plane and having a first width where the flexure is attached to the frame different from a second width where the flexure is unattached to the frame. The actuator further includes an electromechanical module attached to a portion of the flexure unattached to the frame, the electromechanical module being configured to displace an end of the flexure during operation of the actuator.

Abstract: An actuator, attached to a panel extending in a plane, includes a frame and a magnetic circuit assembly that includes a magnet and a voice coil, the magnet and voice coil being moveable relative to each other during operation of the actuator along an axis perpendicular to the panel's plane. The actuator further includes one or more suspension members attaching the frame to a first component of the magnetic circuit assembly. Each suspension member includes a segment attaching the suspension member to the frame at an attachment point and a first arm extending away from the attachment point to an end attached to the first component of the magnetic circuit assembly. During operation of the actuator the first arm of the one or more suspension members flex to accommodate axial displacements of the magnet relative to the voice coil.

Abstract: In some implementations, an actuator can include a magnetic cup comprising a base and sidewalls defining a cavity, the base comprising a planar outer surface opposite the cavity, an edge of the outer surface comprising one or more joint elements; a magnet arranged in the cavity of the magnetic cup; a voice coil arranged in an air gap separating the sidewalls and the magnet; a support comprising one or more magnetic suspension members each comprising an edge shaped to fit to a corresponding one of the joint elements and having a first side that is a) flush with the planar outer surface or b) displaced from the planar outer surface along a first axis perpendicular to the planar outer surface in a direction toward the cavity of the magnetic cup; and a coupling plate attached to the voice coil and the support.

Abstract: A filter assembly for relieving hydrostatic pressure includes a housing with a flange and a shell. The flange includes an opening extending through the flange and the shell includes a base and a terminating end. The base of the shell is connected to the flange at the opening and extends away from the flange toward the terminating end. The filter assembly also includes a coupling mechanism with a drain pipe orifice to accept a drain pipe therein. The coupling mechanism is movably connected to the terminating end of the shell such that the coupling mechanism can move relative to the shell to change a position of the drain pipe orifice relative to the terminating end of the shell. The filter assembly also includes a filter cartridge removably positioned inside the shell and a face plate removably connected to the flange to secure the filter cartridge inside the shell.

Abstract: A panel audio loudspeaker includes a panel extending in a plane and an actuator coupled to the panel and configured to couple vibrations to the panel to cause the panel to emit audio waves. The actuator includes a rigid frame attached to a surface of the panel and the frame includes a portion extending perpendicular to the panel surface. The actuator also includes an elongate flexure attached at one end to the portion of the frame extending perpendicular to the panel surface, the flexure extending parallel to the plane and having a first width where the flexure is attached to the frame different from a second width where the flexure is unattached to the frame. The actuator further includes an electromechanical module attached to a portion of the flexure unattached to the frame, the electromechanical module being configured to displace an end of the flexure during operation of the actuator.

Abstract: An actuator, attached to a panel extending in a plane, includes a frame and a magnetic circuit assembly that includes a magnet and a voice coil, the magnet and voice coil being moveable relative to each other during operation of the actuator along an axis perpendicular to the panel's plane. The actuator further includes one or more suspension members attaching the frame to a first component of the magnetic circuit assembly. Each suspension member includes a segment attaching the suspension member to the frame at an attachment point and a first arm extending away from the attachment point to an end attached to the first component of the magnetic circuit assembly. During operation of the actuator the first arm of the one or more suspension members flex to accommodate axial displacements of the magnet relative to the voice coil.