Abstract: The stem connection of a back connected gauge instrument placed extending partially through an opening in a panel wall is received in an aperture of an elongated clamp plate adapted to span the instrument parallel to the backside of the panel. A keyed recess in communication with the plate aperture is adapted to interlock with a cooperative surface on the gauge stem at a predetermined location longitudinally spaced behind the gauge. A foot of a leg extending integrally from the plate at one end thereof toward the backside surface of the panel cooperates with a similarly extending preassembled thumb screw extending transversely through the plate at the opposite end to effect mounting. The thumb screw also serves to adjustably draw and secure the gauge into its mounted position.

Abstract: Disclosed herein is a mounting frame equipped with a decorative plate, for mounting a switch or the like. The mounting frame includes a decorative plate having a through-hole formed thereon so as to mate with a sleeve which is step-wise formed at the upper portion of a switch, a pilot lamp or the like, and leg portions vertically suspended from the lower end portions on both sides of the decorative plate. When the sleeve is fitted into the through-hole while the inner side surfaces of the leg portions or a bridge interconnecting the lower portions of both leg portions are anchored to the corresponding outer side surfaces of the switch, the pilot lamp or the like, the switch, the pilot lamp or the like can be mounted to, and dismounted from, the mounting frame in one-touch operation.

Abstract: The present invention relates to a simple and inexpensive, clamp-type microphone mount for base fiddles and the like. The mount includes at least a pair of members arranged to clampingly engage such portions of a musical instrument as defined opposite sides of an aperture formed through the housing of the instrument.

Abstract: The apparatus and method herein disclosed is to permit modular mounting and packaging of a plurality of data processing devices of different configurations and functions in a standardized wall-like reticulated structure.This structure (10) has front and rear panels (12, 14) containing a plurality of identically configured apertures (11, 13). Covers (22, 23) configured to suit the different functions of the respective devices (17, 18) enclose protruding portions of such devices; but all such covers have identical peripheral dimensions conforming to but somewhat larger than that of the identically configured apertures so that any of the different devices may be mounted in any one of the apertures in the structure. The structures may be arranged in in line or staggered relation or at right angles to form a variety of configurations, but each structure is preferably connected to a respective support panel to provide a T-shaped free standing entity of high stability.

Abstract: A support for a ceiling fan or other fixture has a pair of slidably interconnected, pointed lances adapted to be driven into engagement with spaced structural members. A tool-strikable striking element is adapted to be coupled to each lance at a selected location along the length thereof. The support is adapted to be installed through a small hole in a preexisting ceiling or wall.

Abstract: A fixture for a push-button switch which has an operating lever protrusive from one face of a box-shaped casing thereof, characterized by comprising a mounting frame which is substantially U-shaped in section and which is provided with an opening for leading out the operating lever of the push-button switch, one mounting surface of the mounting frame being provided with a plurality of bulges for positioning the push-button switch in engagement with the casing thereof, the other mounting surface being provided with a pair of tongues protrusive in a direction orthogonal to the moving direction of the operating lever, the pair of tongues being fastened in engagement with the casing of the push-button switch.

Abstract: There is provided a system for clamping an apparatus in a rectangular cut-out of a panel, the apparatus being arranged on the rear side of the panel and a cover plate being provided on the front side of the panel, the system being adapted for use in a corner area of the cut-out. A truncated rectangular pyramid is displaceable in a direction perpendicular to the plane of the panel. A frame is associated with the apparatus and is provided with two fixing parts, one being formed as a first clamping wedge pivotal about a first axis parallel to one edge of the cut-out and the other being formed as a second clamping wedge pivotal about a second axis perpendicular to such one edge. Adjacent walls of the truncated pyramid are respectively engageable with a wall of the first clamping wedge and a wall of the second clamping wedge. A screw extends through an opening in the cover plate into a threaded recess in the truncated pyramid.

Abstract: A vehicle instrument panel attaching structure wherein the instrument panel is attached to a body frame of the vehicle by means of stays which are disposed in side portions of the instrument panel so as to yieldably connect the instrument panel to the body frame of the vehicle. A predetermined clearance is defined between the instrument panel and the body frame of the vehicle in the assembled condition, so as to accommodate yielding movements of the stays. By virtue of the attaching structure, the instrument panel is yieldingly movable relative to the vehicle body frame when subjected to substantial impacts, thereby protecting a driver or a passenger from injury under unusual conditions such as during a collision of the vehicle.

Abstract: An indicator panel fixing arrangement for fixing a flat indicator panel, which is generally formed in a channel-shape having a bottom portion and sidewall portions standing upright from the bottom portion. One of the sidewall portions has, on the inside thereof, at a position near the bottom portion, a guide member for guiding the indicator panel onto the bottom portion. The arrangement may further includes another guide member provided on the inside of the bottom portion at a position remote from the former guide member.

Abstract: An alignment mechanism for a paper tape reader in which the motor and drive sprocket assembly is firmly, but not rigidly, affixed to a base plate of the main reader unit by a plurality of compressive spring fasteners. Arcuate slots in a motor mounting base plate, in conjunction with spring-biased retainers projecting through those slots and secured to bosses on a reader base plate, maintain the two base plates in spaced parallel relation and permit limited angular rotation of the motor and drive sprocket assembly, thus facilitating angular adjustment of the motor. A bias spring applies a torsional force to the motor assembly, forcing it against an adjustable screw stop. Adjustment of this screw results in rapid and precise single-step alignment without the often disruptive further step of tightening retention fasteners.

Abstract: A gauge mounting device is provided for use in the instrument panel area of a vehicle and includes a pair of frames arranged to fit back to back in mating disposition. The outwardly facing surface of each frame is color, texture and style coordinated with the vehicle interior and to suit the preference of the user. The frames include congruent bezels with at least one gauge mounted against a bezel in one frame with an umbilical sensor connector extending through the corresponding bezel in the opposite frame.

Abstract: An assembly for switches of the type which are pushed into a receptacle by means of webs guided in grooves. On each guide groove one side wall is staggered backwards relative to the other side wall in the longitudinal direction. It is then possible to bring webs and grooves into contact by a vertical movement with respect to the direction of insertion.

Abstract: A mosaic display panel is formed of a series of interconnected horizontal and vertical supports and of a mosaic of tiles and control instruments; a cluster of interfittingly connected elements is provided for mounting the tiles and instruments to the vertical supports; each side wall of each mounting element has a longitudinal projecting tab and a longitudinal guideway, both of substantially complementary shape, so that the tab and guideway of one side wall of this mounting element may be respectively engaged with the guideway and the tab of the side wall of an adjacent mounting element whereby a cluster of such mounting elements may be formed and mounted to two adjacent vertical supports.

Abstract: A weatherproof junction box is disclosed to include mounting means comprising lugs rotatably mounted on posts integral with the box structure and secured thereto by push nuts.

Abstract: There has been provided a drop-in cutting board assembly for an apertured countertop, wherein a vitreous cutting surface is located over a backing or strengthening member. A T-band holds the cutting surface and backing member together by means of a pair of opposed flanges joined together by an annular band located about the periphery thereof. An outwardly facing proportion of one of the flanges engages a peripheral margin of the countertop aperture to support the assembly in place and a channel formed integrally of the annular band extends below the countertop. A latch engages the channel and has free ends for engaging both the rearward portion of the backing member and the countertop for securing the assembly firmly within the aperture countertop.

Abstract: A heavy duty electrical power supply cabinet having a plug-in twist lock receptacle construction bodily supported against radial movement terminally at both of its ends for heavy duty use, and at a point intermediate its ends is rigidly supported against rotation and axial loosening by mating chordal flats that are spaced from the front wall of the cabinet in a rigidly mounted channel member as secured by a lock washer.

Abstract: The stem connection of a back connected gauge instrument placed extending partially through an opening in a panel wall is received in an aperture of an elongated clamp plate adapted to span the instrument parallel to the backside of the panel. A keyed recess in communication with the plate aperture is adapted to interlock with a cooperative surface on the gauge stem at a predetermined location longitudinally spaced behind the gauge. A foot of a leg extending integrally from the plate at one end thereof toward the backside surface of the panel cooperates with a similarly extending preassembled thumb screw extending transversely through the plate at the opposite end to effect mounting. The thumb screw also serves to adjustably draw and secure the gauge into its mounted position.

Abstract: A structure for mounting an instrument to a recessed instrument panel within the recess thereof is disclosed. The instrument panel recess is formed on its inner surface with hook means. At least one lock device is fixedly secured on the instrument. The lock device includes a base plate secured on the instrument, a lock member supported on the base plate for sliding movement at an angle with respect to the direction of insertion of the instrument into and out of engagement with the hook member, and a snap-action mechanism secured on the base plate and coupled to the lock member. The snap-action mechanism has its condition changed so as to hold the lock member in engagement with the hook member under a force when the instrument is advanced into the recess to a predetermined position and returned to its original condition so as to bring the lock member out of engagement with the hook member when the instrument is retracted against the force from the predetermined position.

Abstract: An electrical outlet box having wall areas recessed inwardly from the outermost periphery of the box wall structure, the recessed areas housing pawl mounting devices and electrical power cable entry ports. The cable entry ports have self-opening and/or self-clamping closure panels extending angularly inwardly from the rim of the port which are also self-centering and self-adjusting for different cable sizes.

Abstract: A mounting member is provided with an alignment ring and a plurality of outwardly projecting posts unitary therewith. Each post has a threaded bore for receiving a mounting screw. The member is temporarily releasably secured within a mold with the distal ends of the posts displaced inwardly from an adjacent interior surface of the mold and with the openings of the bores directed towards the adjacent interior mold surface. An article is rotationally molded to encapsulate the member with at least the distal end portion of each post embedded in a formed wall of the article.

Abstract: An electrical outlet box having wall areas recessed inwardly from the outermost periphery of the box wall structure, the recessed areas housing pawl mounting devices and electrical power cable entry ports. Each pawl mounting device includes a single stop flange on the outer surface of the box wall structure. The pawl arm includes a hub into which a threaded mounting screw is fastened and extends tangentially of the hub. The pawl arm terminates on one side of the hub in a right-angled stop flange and terminates on the opposite side of the hub in a small tab member. A guide channel adjacent the box stop flange slidably receives the pawl hub to guide the pawl in back and forth linear travel while the rear tab moves freely within a slotted channel formed between the box stop flange and the guide channel. The pawl arm and rear tab are alternatively urged against the box stop flange upon rotating the pawl in opposite directions causing the pawl to travel linearly in both a forward and backward direction.

Abstract: An adapter for use primarily in mounting a high fidelity speaker in the door of a vehicle.

Abstract: A steering column switch assembly includes a carrier housing mounted on a steering column adjacent a steering wheel thereon. A plurality of switches, each in a housing, is detachably mounted in the carrier housing between a respective one of a plurality of pairs of parallel carrier faces on the carrier housing and extending parallel to the axis of the steering column. Resilient means on each switch housing engage stop surfaces on the respective pair of carrier surfaces to retain said switch housing in said carrier housing.

Abstract: The mounting frame of the present invention is constructed for being easily installed in the wall of a building from the exterior side of the wall using only a simple hand tool, such as a screwdriver, and for slidingly receiving a ventilator in a quick and simple installation procedure. The mounting frame has an outwardly extending peripheral flange on the front thereof which is adapted to engage the exterior face of the wall, and includes clamping means extending rearwardly of the peripheral front flange for engaging the interior face of the wall and clamping the frame in place in the wall. Inwardly extending flanges on the top and bottom walls of the frame are provided for engaging the rear of the ventilator to limit rearward movement of the ventilator.

Abstract: An instrument clamp or holder particularly suitable for mounting aircraft instruments within an instrument panel. The clamp is of an annular, rectangular configuration defining an opening into which the instrument is received. Elongated elastomeric elements located adjacent each clamp corner are associated with an individual threaded compression member adapted to compress and expand the elastomer and force the same against the instrument casing to frictionally support the casing within the clamp, and simultaneously resiliently mount the instrument.

Abstract: A panel such as instrument panel or door panel of a vehicle is integrally formed with a speaker supporter. The supporter comprises flat base part which has at one end thereof a catch portion into which a part of the speaker unit is slidably inserted to be caught; and slant parts connecting the flat base part to the major part of the panel in such an arrangement that the flat base part is parallelly spaced away from the major part of the panel.

Abstract: A snap-in switch housing for a manually operated electrical switching device has a bushing in which a control shaft for the device is journaled molded from a plastic material. Included on the exterior of the bushing are resilient prongs having cam surfaces which cause the prongs to be pushed inwardly as the bushing is inserted through an aperture in a mounting plate for the switch device with barbs on the prongs preventing retraction of the switch housing from the mounting plate after insertion. The resiliency of the plastic material from which the bushing is molded causes the prongs to maintain a position in which the housing is securely mounted to the mounting plate.

Abstract: A control device having a cap telescoped through a mounting opening in a control panel and being secured thereto by a nut threaded on the cap and disposed against one side of the panel and a fastener carried by the cap and disposed against the other side of the panel, the fastener comprising a substantially flat plate spanning the opening of the panel and having a bayonet opening passing therethrough and aligned with the opening of the panel and the cap having a bayonet portion extending completely through the bayonet opening and cooperating with the bayonet opening to lock the cap and plate together.

Abstract: A holder for a fuse or the like of the type which is insertable into a hole in a mounting plate and fastened to the mounting plate comprises an elongate housing dimensioned to be axially inserted in the hole in the mounting plate and having at one end a flange portion which abuts the mounting plate upon full insertion of the housing in the hole. A resiliently deformable sleeve is mounted on the housing adjacent the flange portion and the sleeve has an outer diameter slightly greater than that of the mounting plate hole. During insertion of the housing in the mounting plate hole, the sleeve makes sliding contact with the wall of the hole thereby causing inward deformation of the sleeve to an extent sufficient to cause the sleeve to exert radially outward pressure against the wall of the hole to thereby frictionally fasten the holder to the mounting plate.

Abstract: A rear mounting bracket or mount for center guide type drawer guides is universally adjustable relative to the cabinet in which it is mounted. A base attaches one side of the mounting bracket to a mounting surface. A drawer guide attaching member connects the other side of the mounting bracket to a furniture-type drawer guide. An adjusting structure forms the interface between the base and guide attaching member and allows positional adjustment of the drawer guide. The structure includes friction-creating ribs which resist movement between the base and the guide attaching member. The use of an external force is consequently required to move the guide attaching member relative to the base. Once the correct position of the guide attaching member has been established, the adjusting structure increases the resistance to adjustment of the rear end of the drawer guide.

Abstract: An anchoring or locking device to enable snap-in installation of boxes for electrical wiring devices in which the snap-in locking device is separate from the box and may be used universally with all types of boxes. The locking device includes a mounting base plate and means to attach the base plate to the side walls or to the top and bottom walls of an electrical wiring device box, the base plate having resilient fingers or extensions projecting therefrom at an incline starting from a point rearward of the box on which the device is mounted and extending at an acute angle from such point in a direction toward the front portion of the box. The projecting fingers or extensions are compressed inwardly toward the base plate when the box on which the locking device is mounted is pushed into the hole provided for the box in the wall on which it is to be mounted.

Abstract: To locate an electric switch relative to a fixed part a bush having a plurality of mating members and a projection in an opening through the bush is positioned in the fixed part. The switch is positioned at one end of a switch carrier having an elongate portion which is also provided with mating members and a projection. The elongate portion is introduced axially into the opening and then rotated to cause the mating members to engage and axially locate the elongate portion in the opening. The projections take up relative positions in which they only permit rotation in the opposite direction to disengage the mating members when sufficient force is applied to deform one or both of the projections.

Abstract: An uninsulated contact array of resilient electrically conducting metal with bridging strips at each end to hold multiple conductors in predetermined spaced relation to each other. The bridging strips permit terminal tips at one end of the conductors to be stabbed into a circuit board simultaneously, for subsequent soldering. The other ends of the conductors, having contact ends, are maintained in spaced apart relation by a second bridging strip, the conductors and contacts permitting threading the contact ends simultaneously into multiple recesses of a display holder socket. The display holder socket is so arranged, that curving the resilient conductors increases the contact pressure of the contacts by bowing them. Resilient mounting arms of the contact holder provide for shock proof mounting of the contact holder in a casing by clamping the resilient arms between the casing and cover of an instrument housing.

Abstract: A mounting insulator for securing a pipe, conduit, or tube through a metal wall stud or other thin planar surface to reduce the noise of water hammer and dialectic interaction between the pipe and the wall stud, the device including an off-center pipe receiving passage which allows for adjustable positioning of a pipe axis relative to the stud aperture axis.The device is comprised of a substantially annular, somewhat flexible ring having a radial slot allowing the annular body to be spread apart and an interior circular passage, the central axis of which is offset relative to the axis of the annular ring. The circular passage includes a flexible wall portion which allows for a snug fit when a pipe is received therein. The device further includes a raised peripheral barrier and a plurality of flanges which cooperate to allow the device to be locked tightly in an aperture in a metal wall stud.

Abstract: A rotary thumbwheel switch assembly has a switch module including a translucent light ring for indicating positions of the rotary thumbwheel. The ring is illuminated from within by a light emitting diode which can be snap-mounted in place in the center of the translucent ring. The switch module comprises a thumbwheel to which contact brush sets can be easily secured by a spring biased tab. The switch module can be combined with a separable bezel. The switch module can be mounted from either side of a front panel, and can be connected to circuit assemblies housed by the panel prior to the insertion of the bezel. The bezel secures the switch modules to each other and to the panel. A kit comprising the separable elements of the illuminating diode, the bezel and the switch modules is described. A method for installing the separable elements includes the steps of inserting the modules from the front of the housing panel for testing each module's connection with circuit assemblies prior to installing the bezel.

Abstract: A control device having a cap telescoped through a mounting opening in a control panel and being secured thereto by a nut threaded on the cap and disposed against one side of the panel and a fastener carried by the cap and disposed against the other side of the panel, the fastener comprising a substantially flat plate spanning the opening of the panel and having a bayonet opening passing therethrough and aligned with the opening of the panel and the cap having a bayonet portion extending completely through the bayonet opening and cooperating with the bayonet opening to lock the cap and plate together.

Abstract: A reversible bracket assembly for use with an electronic apparatus bearing housing or the like includes an elongate plate having opposed sides each suitably fastenable to the side panels of the housing. A mounting flange extends transversely of and integrally from one end of the plate and a handle member extends integrally from the other end of the plate. The plate is fastenable to the housing with one of its sides in abutment with the housing side panels for facilitating portable transportation and use of the housing by means of the handle members and with its other side in abutment with the housing side panels for facilitating mounting of the housing within a standard equipment rack through the agency of the mounting flange.

Abstract: A support for mounting an electrical outlet box in an aperture in a building panel, said support comprising a U-shaped yoke having a base portion, a pair of legs substantially normal to the base portion and a support foot extending outwardly from each leg substantially parallel to the base portion and adapted to overlie an area of the front of the building panel adjacent the aperture when the yoke is inserted in the aperture, each leg having at least one aperture intermediate the base portion and the foot; and a clamping member for association with each leg of the yoke, each clamping member having a support surface adapted to overlie an area of the back of the building panel opposite the area of the front of the building panel to be overlaid by the foot of the associated leg, a tab member extending from said support surface and adapted to interconnect the clamping member with said at least one aperture of the associated leg, and a clamping arm extending from the support surface on each side of the tab member,

Abstract: A control panel is provided incorporating a plurality of controls and an arrangement for the rapid mounting and demounting thereof in an aperture of a support. The mounting and demounting arrangement permits the retention of the panel with one side of the opening retained in a slot in a corresponding side of the panel and the other side of the opening being retained between a projection and a displaceable dog on the opposite side of said panel. Said dog is mounted on a bolt threaded in said panel for displacement between a first position in which the dog engages the wall of the opening and a second position wherein the dog is displaced both away from the wall of the opening in the axial direction of the bolt and pivoted by the bolt out of registration of the wall to permit release of the panel. The controls may include diaphragm-type push-button switches, slide switches and rotatable multi-position switches.

Abstract: An improved radio and/or radio tape player combination that is readily mounted in a dashboard from the same convenient position in front thereof in which it is operated or played, but yet is not susceptible to theft by being merely disconnected from the dashboard, due to a transversely oriented front housing incorporated in the construction thereof. The housing, as explained in greater detail subsequently, serves as an effective compartment-bounding structure for the advantageous internal placement of the mounting bolts which attach the radio to the dashboard; the bolts, as a result, being readily masked from view and otherwise rendered difficult to be tampered with.

Abstract: The snap-in mounting means includes a garter spring retained in an annular groove provided near the outer end of a bushing which extends from a switch frame on a switch base of an electrical toggle switch assembly and pivotally supports a toggle lever for actuating switch contacts housed in the switch. The garter spring has a helical diameter and an outermost toroidal diameter which is larger than the diameter of the mounting hole in a support panel on which the switch assembly is to be mounted. The bushing groove has an upper portion for retaining the garter spring in its normally expanded state, a lower portion of sufficient radial depth to receive the garter spring, when squeezed radially inwardly to a compressed state of reduced toroidal diameter without reducing the helical diameter, wherein the garter spring/bushing subassembly can pass through the panel mounting hole, and a tapered inner wall extending between the upper and lower portions.

Abstract: A device for use with variable electrical components such as potentiometers to provide not only an independent means adjacent the control knob to lock the knob in a fixed position, but also to provide variable amounts of drag on the knob to enhance more precise and accurate control of the knob. The locking device is positioned between the controlled component and the control knob. The locking device can be moved to a plurality of positions adjacent the control knob to vary the amount of drag on the control knob.

Abstract: A toggle switch having a molded insulating frame mounting a snap-in bushing secured thereto for snap-in mounting of the switch in a hole in a mounting pane. This bushing pivotally retains the toggle lever for operating the switch contacts within the base. This frame includes a pair of depending legs between which the insulating switch base is snap-in mounted and retained. This frame has integrally molded therewith a pair of oppositely disposed resilient back-up elements for pressing against the back of the panel, these elements having at their ends ramped riser bars for accommodating a range of different panel thicknesses while retaining the switch against significant movement on the panel during toggle lever operation.

Abstract: A mounting bracket for electrical boxes includes a base having a deformable portion extending therefrom and terminating in a flange having a screw receiving bore. A screw freely extends through a hole in the base into threaded engagement with the bore and the flange. Tightening of the screw moves the flange toward the base to deform the deformable portion laterally for engaging a wall to hold an electrical box or the like in an opening through the wall. The base has legs extending therefrom in a direction opposite from the deformable portion for location on opposite sides of a boss on an electrical box. Wings extend outwardly from the legs and hook portions extend back toward the base from the wings for engaging shoulders on an electrical box.

Abstract: The snap-in mounting means includes a ring-like retainer member disposed in an annular groove provided near the outer end of an elongated bushing which extends from a switch frame member on a switch base of an electrical toggle switch assembly and pivotally supports a toggle lever for actuating switch contacts housed in the switch base. The retainer member is radially compressible and expandable in the bushing groove between a normally expanded position where its outer dimension is larger than the dimension of the mounting hole in a support panel on which a switch assembly is to be mounted and a compressed position where it can pass through the mounting hole.As the bushing is initially inserted into the mounting hole from the rear of the panel during mounting, a portion of the retainer member engages the rim of the mounting hole and it is cammed thereby to the compressed position inside the groove.

Abstract: A refrigerator cabinet feed-through grommet formed of resilient material comprising an outer sleeve section having one end formed with a double flange for sealingly connecting the grommet to the cabinet liner. The grommet has an inner socket section for supporting a rigid tube, enclosing an insulated electrical heater conductor, located in the space between the cabinet outer shell and inner liner. The socket portion includes stop means for seating the tube free edge so as to obviate any contact by the electrical conductor with the end of the tube. The interconnection of the socket section with the outer sleeve section is provided by a frusto-conical shaped lead-in section being sufficiently yieldable to permit the inner socket section to move out of concentrically spaced relation with the outer sleeve section so as to compensate for some misalignment of the tube with respect to the grommet.

Abstract: In the disclosed aircraft instrument and panel cooling apparatus, each instrument is cooled uniformly and efficiently by air flowing through a plurality of small orifices which surround the large apertures in which the instruments are mounted. The orifices are preferably closely spaced around the instrument apertures with a distance between orifices of the order of two to four orifice diameters and located within a range of up to six orifice diameters from the instrument case so as to provide a plurality of cooling streams of air which tend to coalesce to provide a uniform and tailored sheet of air for maximum cooling efficiency.

Abstract: An electrical component is supported within a housing molded of a plastics material, and the housing has an external groove which is interrupted by a plurality of peripherally spaced slots extending axially through the forward end portion of the housing. The slots provide for partially collapsing the forward end portion of the housing in response to pressing the housing into an opening within a panel so that the panel snap-fits into the groove. A retaining member is also molded of a plastics material and is mounted on the forward end portion of the housing to cover the slots. The retaining member has a corresponding plurality of circumferentially spaced and integrally molded ribs which are pressed axially into the slots to lock the housing firmly to the panel. The slots and ribs may have interfitting teeth to produce a permanent lock, and the retaining member can be adapted to carry a lens or other part which snap-fits into an annular recess formed by the retaining member.

Abstract: An electrical device such as a panel meter with a body including an abutment, is inserted through an opening in a panel with the abutment on one side of the panel, and is secured to the panel with a nut plate on the other side of the panel. The body of the meter has plural teeth, discontinuous around the periphery of the body and the teeth extend from opposite sides of the body. The nut plate has an opening with flexible sides to enable snapping the nut plate over the body and teeth to a position abutting the panel to clamp the meter to the panel. Portions of the opening in the nut plate are enlarged so that moving the nut plate to a position in which the body teeth are adjacent the enlarged portions of the opening releases the nut to permit immediate and rapid removal of the meter from the panel. There are several teeth at each side of the body to enable mounting and securing the meter in panels of substantially different thicknesses.

Abstract: A rectangular mounting frame of angle cross section encircling a case receivable at least partially within the opening of a wall includes an outer flange portion projecting perpendicularly from the case sidewalls closely overlying the margin of the wall opening and an inner flange portion slidable relative to the case sidewalls interposed between such sidewalls and the wall structure within the wall opening. Screws extend from the inside of the case through the case sidewalls and the inner flange portion of the mounting frame and are screwed into the wall structure within the wall recess.