Abstract: A knob retainer system including a knob having a cavity and an opening into said cavity and a retainer adapted to fit within the knob cavity. The retainer includes wing portions and a cantilevered barbed portion. When the retainer is placed inside of the knob cavity and the actuating lever is manipulated between the retainer and an upper wall of the knob cavity, the actuating lever downwardly depresses the retainer thereby causing stakes located in the retainer to positively engage a portion of the cavity wall thereby preventing the retainer from moving with respect to the knob. The retainer is also fitted with a cantilevered portion which terminates in a barbed end. The barbed end positively engages an engagement surface on the actuating lever thereby preventing the actuating lever from pulling away from the knob/retainer assembly. The actuating lever is easily removed from the knob/retainer assembly by use of a specialized tool.

Abstract: A device for connecting a control mechanism to an end of a support arm system with mounting screws that have screwheads projecting from the control mechanism and that can be inserted vertically and up into keyhole type screw receptacles of the support arm system. The mounting screws can be temporarily held in the holding slots of the screw receptacles by horizontal displacement and fixed in the holding position by rotation. According to this invention, if a vertical lowering of the mounting screws and insertion of the screwheads into securing receptacles at the end of the holding slots of the screw receptacles are performed after horizontal displacement of the mounting screws, which prevents horizontal displacement of the mounting screws from the holding position, then the set holding position is secured so that unintentional release of the control mechanism from the support arm system is reliably prevented.

Abstract: A control shaft and knob assembly includes a control knob having a slot defined therein. The assembly also includes a control shaft which (i) has a bore extending therethrough, (ii) includes a spring arm which is positionable within the slot of the control knob, and (iii) has an opening defined therein. The assembly further includes a locking pin having a first retention member secured thereto. The locking pin is positionable in the bore of the control shaft. When the locking pin is positioned in the bore of the control shaft (i) the locking pin is positioned to inhibit inward deflection of the spring arm, and (ii) the first retention member is received into the opening of the control shaft. A method of securing a control knob to a control shaft of an appliance timer is also disclosed.

Abstract: A separable connector assembly includes a connecting member having a threaded end, and a hollow housing having a cylindrical wall that contains a body rotatably mounted therein. This body is threadably engageable with the threaded end of the connecting member. A first mechanism releasably restrains the body from rotating, and a second mechanism is included for winding a spring about the cylindrical wall of the housing. A third mechanism is included for releasing the spring. A fourth mechanism is included for restraining the threaded end from rotating. A fifth mechanism is included for applying a selected tensile load. When the load is applied, a thread geometry of the connecting member causes the load to be resolved as a torque applied to the body sufficient to cause the body to rotate enabling the connecting member to translate out of engagement with the body and subsequently separate from the body.

Abstract: A connector for a portable combination fan and mister in accordance with the present invention has a lock, a hook and a corresponding strongback. The hook is attached to the fan to hold the strongback that is attached to the mister. The connector allows the fan attached to and disconnected from the mister quickly and conveniently.

Abstract: A tooless electrical connector includes a housing having a bore with a groove disposed on an inside surface of the bore with the groove establishing a shoulder between a groove bottom and a bore inside surface. A flat spring is provided and disposed in the groove for defining a spring cavity between the flat spring and the shoulder and a circular canted coil spring is disposed in the spring cavity. A pin having a circumferential groove is provided for receiving the coil spring upon insertion of the pin into the bore and a plurality of primary radial fingers formed in the flat spring retain the coil spring in the cavity before insertion of the pin. A plurality of secondary radial fingers formed in the flat spring prevent axial movement between the housing and the pin with the coil spring within the pin groove.

Abstract: A plug connection with an installation securing device for cable lines comprises a sleeve with a central cylindrical cavity that is open at one end. A primary groove is open to the outer surface of the sleeve and the central cylindrical cavity. A wedge-shaped barrier that is integrally formed with the sleeve is disposed in the primary groove. A bolt is disposed in the central cylindrical cavity and it has a secondary groove that extends around its entire circumference. The secondary groove aligns with said primary groove when said bolt is fully inserted in said sleeve. A U-shaped spring is disposed in the primary groove holding the bolt in place by engaging the secondary groove via said primary groove. The U-shaped spring has hook-shaped ends that engage a wedge-shaped barrier, holding said U-shaped spring in place and thus said bolt in said sleeve.

Abstract: An assembly of a first and a second pieces of bodywork of plastics material, each piece having an edge for coming into contact with an edge of another piece, wherein the edge of the first piece has a slot while the edge of the second piece has a tongue extending towards the first piece and suitable for penetrating into the slot, so as to cause an end portion of the tongue to project beyond the slot, the tongue being pierced by a through orifice situated in its end portion, one of the two pieces being provided with a cotter attached to the one of the two pieces by a deformable link which enables the cotter to be engaged in the through orifice of the tongue once the tongue has been inserted in the slot, thereby retaining the tongue in the slot.

Abstract: An easel board support is installed on an easel supporting leg for suspending and supporting objects and the height thereof is adjustable. The easel board support comprises a sleeve and a board support body. The sleeve is capable of being inserted by an easel supporting leg and have two pivotal ears each having through hole. A part of the sleeve at an inner side of the pivotal ear has a slot. An elastic press is formed between the two slots. By a large contact surface between the press piece and the supporting leg, the board support is positioned stably; and by the resisting effect between a resisting block and the sleeve, the board support will not fall downwards. The press can be replaced by a receiving groove formed between the two pivotal ears and a cambered pressing block installed in the receiving groove.

Abstract: A support system is disclosed that can be assembled and disassembled quickly and easily to allow easy mobility and compact storage. The support system comprises of a supported member and a supporting member. The supported member defines two holes that will engage the engagement means in the supporting member to securely retain the supporting member in desired position and support the supported member.

Abstract: In a bicycle having a frame supporting a rear wheel axle, a tool-free trainingwheel-to-frame mounting assembly and method is provided for mounting a trainingwheel to the frame with an insertion motion requiring no tools. Disassembly desirably requires a tool.

Abstract: Disclosed is a spacer of a windshield wiper for a vehicle including an upper panel, a pair of side panels extending downwardly from opposite lateral ends of the upper panel while defining a receiving space therebetween, the side panels being centrally formed with through holes, respectively, and annular protrusions protruded, toward each other, from the side panels around the through holes, and adapted to be fitted in through holes formed at an element of the windshield wiper to be assembled with the spacer, respectively. Each of the protrusions has a tapered structure having a diameter gradually reduced toward a free end of the protrusion, while having an annular step formed at the free end of each of the protrusions, and a plurality of slits formed at the annular step.

Abstract: A latch mechanism for securing a backhoe loader stabilizer arm in a stowage position. The latch mechanism has a first portion attached to the machine frame and a second portion attached to the stabilizer arm. The first portion is a receptacle having two parallel members of a resilient material. The second portion is a probe having a head and a shank. The latch mechanism automatically engages and disengages as the arm approaches or departs the stowage position by the force applied in moving the stabilizer arm. The latch secures the stabilizer arm in the stowage position from external forces insufficient to disengage the latch.

Abstract: The object is to make a cast fastener (10) for a wiper arm, having a though opening (14) for a bearing bush and a receptacle for a retaining pin (16), that can be produced at less expense. For this purpose, it is provided that the receptacle for the retaining pin is a groove (30), which is closed on its face ends.

Abstract: A sportsboard locking apparatus for a sportsboard having an attachment channel having an elongated insertion groove indented on an attachment surface of the sportsboard and an engagement groove perpendicular extended along the insertion groove, wherein the sportsboard locking apparatus includes an engagement member having an engaging latch transversely formed at a foot end of an outer surface thereof and a first shackle bore, a locking member having a predetermined thickness and a second shackle bore, and an attachment device for slidably attaching the locking member to the engagement member that limits the locking member to move longitudinally with respect to the engagement member between a locking position and an unlocking position.

Abstract: A chain joint for a high-strength link chain is disclosed. The chain joint is formed from two joint parts form-fittingly connected with one another and a center piece braced on the two opposing longitudinal side bars of joint parts. The center piece is detachably disposed with respect to the joint parts. The center piece is formed from a fitting plug and at least one fitting element indicating the specified set-in position of the fitting plug based on resilient material properties. The fitting element serves a fitting sleeve, into which the fitting plug can be set and in which the fitting plug is at least predominantly enclosed.

Abstract: The rack and pinion vehicle steering assembly has a steering rack slidably supported in a rack and pinion housing. An inner tie rod housing has a shank that screws into a threaded rack bore. A housing chamber receives an inner end ball and an open end of the housing chamber is crimped to retain the inner end ball. An inner support nut screws onto the steering rack and into contact with the tie rod housing. An inner support clamp has a central passage that receives an inner rod that is fixed to the inner end ball. Internal clamp threads on the clamp rim of the inner support clamp engage male threads on the inner support nut to retain the clamp and encase the tie rod housing and the inner end ball.

Abstract: A coupling for coupling a component to a hanger including a first member and a second member. The coupling includes a first member and a second member. The first member includes a pair of extending portions and a pair of extending tabs. The second member includes a pair of circumferential openings and a pair of opposed notches. The openings and notches receive the extending portions and tabs. The component is supportable from the hanger and is substantially restricted from independent movement relative to the hanger when the first member is connected to the second member.

Abstract: This invention relates to a sealing spring fastener, which comprises a U-shaped structure, on which an elastic body has been incorporated. The elastic body has a closed cavity within the U-shaped structure. The sealing spring fastener can form an assembly with an extension of a panel, preferably a plastic panel. The assembly or the fastener by itself can be engaged into the slot of a solid sheet, preferably a metal sheet, in a manner that one side of the sheet is sealed from the other side of the sheet in the vicinity of the slot. This invention also relates to vehicles having parts connected with the above sealing spring fasteners.

Abstract: A rotational spring clip is provided for connecting a male component to a female component. The spring clip is pivotally secured to a female component. The male component includes a male member that extends through a hole in the female component. The spring clip is then rotated to engage the male component with a structure that includes two spaced apart legs that define an open mouth. The legs of the clip are trapped between a flange formed at the outer distal end of the male member that extends through and beyond the female component. The legs of the clip are then frictionally trapped between the flange of the male member and an outer surface of the female component.

Abstract: An assembly including an outer race of a constant velocity joint and part of a vehicle wheel bearing. The outer race has a first bore and an internal groove in the bore, and the wheel bearing part has a second bore with an open end, an external groove, and a slot extending radially from the second bore between an inner end open to the second bore and an outer end at an external surface of the bearing part, the slot extending axially between the external groove and the open end. The wheel bearing part and the outer race are held in an assembled position by a spring ring engaged in the internal groove and the external groove. The spring ring includes, adjacent its ends, first and second arms which extend generally radially inward through the slot. The first arm is substantially longer than the second arm and inclined such that the first arm extends approximately through a center axis of the spring ring. A sealing element is also included to seal the second bore.

Abstract: Provided herein is an article which is by its nature readily clamped to the end portion of a metallic ware employed as a cable support rack, and driven into the ground. An insulative wedge according to the invention renders a linear metallic ware to not be in contact with the ground, and has the further advantage of comprising an end portion which penetrates earth readily but which is simultaneously deflected by subterranean conduits into which it may inadvertently come into contact with, thereby not interfering with the integrity of subterranean utilities, including wires, pipes, conduits, and the like.

Abstract: A seat assembly (10) for a vehicle having an anchor (16) for a child seat (15) disposed between a seat cushion (12) and a seat back (14). The invention is characterized by a cover (17) movable into a retracted and closed position between the seat cushions (12) and the seat back (14) covering the anchor (16) and out of the retracted position to an extended and fully open position out from between the seat cushions (12) and seat back (14) exposing the anchor (16) for attachment to the child seat (15). The cover (17) includes guide slots (34, 36) for slidably receiving side portions (50) of the anchor (16) and a ramped surface (60) automatically moves the lid (20) from the closed position to the fully open position in response to the housing (18) moving relative to the anchor (16).

Abstract: A control rod for an aircraft actuator system. The control rod incorporates a swivel insert to create a rotatably connected rod end. The swivel insert comprises a longitudinal bore for introduction of a rod end shaft. The rod end shaft has a circumferential groove that aligns with radially extending bores in a threaded portion of the swivel insert. Ball bearings are placed into the radially extending bores and the swivel insert is threaded into a tube having an internally threaded bore and a counter bored entrance portion. Once the swivel insert is threaded into place, the ball bearings are captured in the radially extending bores between the counter bored entrance portion of the tube and the circumferential groove. The rod end is thus free to rotate but is rotatably attached to the control rod.

Abstract: A locking bracket for brooms that have a multi-sided locking section near the mounting end of the handle has a pair of spaced-apart locking arms that enable the bracket to be attached in the proper position against the locking section without passing the bracket over either end of the handle. When secured in position, faces on the locking arms engage faces on the locking section, limiting rotation of the handle. The bracket can be mounted in position by a plug that engages the unused handle hole on the broom head.

Abstract: A safety connecting and hooking device for tubular elements, first (2a) and second (2b), particularly for stretcher, includes: a female element (3) whose first end is connected to said first tubular element (2a) and whose second free end has a seat (5) transversally crossed by a hooking pivot (4); a male element (6) whose first end is connected to said second tubular element (2b) and whose second free end has a bracket (7) detachably insertable complementary into said seat (5) of said female element (3), said bracket (7) having the head with a recess (8) in order to house partially said hooking pivot (4); a hook (10) hinged to said male element (6) and detachably insertable, in correspondence of a hooking condition (A) of said tubular elements (2a, 2b), into a slot (9) carried out longitudinally in the bracket (7) for closing partially the opening part of said bracket (7) around said hooking pivot (4); a safety hook (15) hinged to said female element (3) and whose hooking end is fit to engage a hollow (11) of

Abstract: A hydraulic connector assembly is provided to couple an extension rod to a piston rod in a reciprocating pump. The connector assembly utilizes a single hydraulic ram to provide the compressive connecting force between the two rods. The connector assembly includes a mechanism for mechanically locking the hydraulic ram in place so that loss of hydraulic power does not uncouple the assembly. The piston rod and the connector rod can be coupled and uncoupled without the use of heavy wrenches, hammers, or impact tools.

Abstract: An anti-theft device secures a removable body part, such as a viewing unit, to a microscope stand. The device is intended to replace a common thumbscrew used to fix the location of a removable body part in a corresponding guide of the microscope stand, and comprises a housing threaded into a tapped hole in the stand for carrying a plunger and a driver both movable within an axial passageway in the housing. The driver is threadably adjustable by hand between driving and non-driving positions with respect to the plunger, and the plunger has a limited range of motion so that it may retract enough to allow the removable body part to be adjusted within the guide but not enough to allow the body part to be removed from the guide when the driver is in a non-driving position. The housing is tightened onto the microscope body by a tool such as a wrench, and the driver is held captive by a snap ring fitting within an internal groove near a trailing end of the housing.

Abstract: A screw-tightening spindle comprising a drive sleeve associated with a chuck comprising a cylindrical support member fitted with moving jaws, the cylindrical support member being provided externally with at least one stud extending radially outwards, the sleeve including at least one slot having a first segment opening out in a free edge of the sleeve and a second segment having an end portion forming an angle relative to the sleeve suitable for retaining the stud in the end portion of the slot when the stud is engaged therein, the sleeve being fitted with a ring having at least one stop extending radially inwards and received in the slot, the ring being mounted on the sleeve to slide between a locking position in which the stop extends in the first segment of the slot in register with the second segment, and an unlocking position in which the stop is retracted into a third segment of the slot.

Abstract: This invention relates to a sealing spring fastener, which comprises a U-shaped structure, on which an elastic body has been incorporated. The elastic body has a closed cavity within the U-shaped structure. The sealing spring fastener can form an assembly with an extension of a panel, preferably a plastic panel. The assembly or the fastener by itself can be engaged into the slot of a solid sheet, preferably a metal sheet, in a manner that one side of the sheet is sealed from the other side of the sheet in the vicinity of the slot.

Abstract: A connection between a tensile element and an object is described having a slotted plate, a connector and a retainer. The slotted plate is attached to or part of the object and the slot has a first part and a second part. The connector has a first end that is engageable with the tensile element and a second end that can be inserted into the second part of the slot and slid towards the first part of the slot to engage the first part of the slot. The retainer inhibits the connector from moving back into the second part of the slot once it is engaged with the first part of the slot. Such a connection can be used to attach a cable assembly to a seat basket to provide adjustable lumbar support.

Abstract: A locking bracket for brooms that have a multi-sided locking section near the mounting end of the handle has a pair of spaced-apart locking arms that enable the bracket to be attached in the proper position against the locking section without passing the bracket over either end of the handle. When secured in position, faces on the locking arms engage faces on the locking section, limiting rotation of the handle. The bracket can be mounted in position by a plug that engages the unused handle hole on the broom head.

Abstract: An overload indicator apparatus (10) is provided for use in connection with a force generator (12). The force generator is used to apply a force to a load (14), and the overload indicator will indicate if the applied force is greater than a predetermined amount. The overload indicator includes a first support member (16), a second support member (18), and a tensile member (20). The first support member can be connected to the force generator, and the second support member can be connected to the load. The tensile member is positioned between, and in load bearing communication with, the first support member and the second support member, and is adapted to support at least part of the force when the force is less than substantially the predetermined amount. An overload retainer (40) comprises at least one beam (42), the beam having a first end (30) connected to the first support member and a second end (32) connected to the second support member.

Abstract: A broom has a handle, a broom head, a bracket for securing the handle against rotation, and a plug for securing the bracket to the broom head. The handle has a segmented locking section near its mounting end, and can be attached to either of two opposed apertures in the broom head. The bracket has a pair of spaced-apart arms with locking faces that can engage the faces on the locking section. To enable the locking faces to engage onto the locking section from a radial direction, the open ends of the locking arms are spaced apart by a distance at least equal to the minor chord of the locking section. The bracket also has a locking aperture that allows it to be secured to the broom head by fastening the plug to the unused opposed aperture.

Abstract: An object is to be mounted by two fastening elements. A fastening element comprises an inlet, which extends at an angle relative to a receptacle lodging a bearing journal, and which allows the fastening element to be placed crosswise on the bearing journal.

Abstract: A specially designed quick coupler is representatively used to removably attach an excavation bucket to the outer boom end of an excavator. A top portion of the quick coupler is pinned to the outer boom end and has a bottom portion with spaced apart recesses configured to releasably receive portions of stick and curl pins on the bucket. An arcuate latch hook is translationally drivable by a hydraulic cylinder assembly toward one of the implement pins to releasably lock it in its associated coupler recess in a manner also captively retaining the other implement pin in its associated coupler recess. Stop structures oppose the latch hook and, using a simple shim arrangement, may be translationally shifted toward and away therefrom to easily adjust the coupler for wear and/or changes in the implement pin spacing. A redundant safety system is incorporated in the coupler and serves to hold the latch hook in its locking position.

Abstract: A quick coupler assembly connects an implement to a work machine. The coupler assembly includes a cylindrical catcher rotatably mounted between a pair of plates. During coupling of the implement with the coupler assembly, the catcher is rotated at a cam surface by an implement coupling pin which allows a latch member mounted to the pair of plates to slidingly engage automatically with the catcher for locking the catcher in a closed position. The closed position of the catcher locates a jaw thereof in a position which retains the implement coupling pin within a receiving notch of the catcher thereby coupling the implement to the work machine. The ability to couple an implement to a work machine with ease and simplicity in conjunction with the utilization of durable components, increases usability and reliability while reducing costs.

Abstract: A device for preventing disconnection of a coupling. The device includes a main body portion having defined therein a fastener chamber and an opening in communication with the fastener chamber. The opening is located above the fastener chamber. In a preferred embodiment, a standard size socket cannot be inserted into the opening.

Abstract: A pivoting connection is described that uses an H-shaped connector secured within the X-shaped opening of a base. One end of the H shaped connector can be inserted into the X-shaped opening at an angle corresponding to one leg of the X but is secured in the opening when twisted to a vertical position. This pivoting connection provides a reliable connection that is durable, weather resistant, and does not readily seize.

Abstract: A ceiling fan bracket has a first end connected to a ceiling fan blade and a second end of the ceiling fan bracket has two L-shaped wings. A connector is connected to the second end of the ceiling fan bracket and has two tongues. A motor casing has a plurality of L-shaped holes and each L-shaped hole includes a wide portion located close to a center of the motor casing and a narrow portion located close to a periphery of the motor casing. Each wing is engaged with the narrow portion of the L-shaped hole and each tongue is engaged with the wide portion of the L-shaped hole. The eccentric force applied to the ceiling fan bracket secures the ceiling fan bracket to the L-shaped hole in the motor casing.

Abstract: A device for the releasable fastening of seats, bench seats or other objects on a floor of a motor vehicle, comprising a locking part, and a mating locking part which can be fastened to the floor. The locking part is movable by overcoming a spring force from a locking position, in which it cannot be uncoupled from the mating locking part, into a release position in which it can be uncoupled from the mating locking part. A blocking element, upon the uncoupling, retains the locking part in the release position by a positively locking interengagement.

Abstract: An improved connection between articulated bodies for agile vehicles is disclosed. It features independent bodies which are connected to each other with concentric sleeves serving as the pivot to allow the bodies to rotate in a plane parallel to the direction of forward movement. The concentric bushings are preferably made of graphite/epoxy and secured to the chassis body sidewalls. Each of the body segments remains uninterrupted by the bushings which are principally disposed between the facing interior sides of the two bodies. The bearing assembly, which is preferably graphite/epoxy, is self-lubricating as it wears over time. Lateral movement is easily controlled, and relative rotation is also controlled by a collar which serves a dual function to control lateral movement of the bodies as well as relative rotation.

Abstract: An accessory receiver is adapted for mechanical engagement with a level sensing device such as a carpenter's level or with other similar tools. The accessory receiver provides a receiver body for engagement within a box frame structure by spring action so that surfaces of the receiver and the level are forced into intimate contact. A pair of springs forces a receiver body into a flush position on the face of a box frame. A keyhole slot in the receiver is adapted for receiving a shaft for an accessory and for capturing it with snap-action onto an alignment upset for true alignment of the accessory with the tool.

Abstract: A device for fastening a machine plate in an offset press is disclosed. The machine plate fastening device may be gripped by a plate lock-up device on the offset press. The device has a plate and a leaf spring, the plate having fastening pins and the leaf spring holding the machine plate on the pins. The leaf spring has holes corresponding to the fastening pins. Also disclosed is a joint plate which can be attached to fix the fastening device at an appropriate angle on the offset press.

Abstract: An apparatus for mixing powdered or premixed drywall joint compound and water to form a joint compound mixture or slurry includes a portable container rig with a container, pumping components, and mixing components on a dolly. A mixing element rests within the container upon the container bottom, while a mixing element driver assembly that is adapted to rest upon the upper lip portion of the container engages the mixing element and rotates it for mixing purposes while at the same time raising it slightly. The pumping components may include various commercially available valves and pump outlets that facilitate the filling of various tape application tools, and one preferred embodiment includes remote control components featuring automatic pump turnoff. One embodiment includes a multifunction coupling assembly having an upper coupling component and two different lower components.

Abstract: A connector for securing a constant velocity universal joint having a housing to a coupling member, the housing and coupling member each having an inner surface and an outer surface. The connector includes an annular member having a first end, a second end, and a plurality of openings which extend axially from the first end to define a series of radially expanding panels for receiving the constant velocity universal joint and coupling member. The joint and coupling member each have respective mating surfaces which engage each other. The first end of the annular member engages the outer surface of the coupling member and the second end of the annular member is disposed proximate the outer surface of the housing. The mating surfaces are splined for transmitting torque. At least one wave spring is provided with the connector to accommodate axial deviation.

Abstract: A safety collar and tendon assembly (24) for joining a female connector (22) and a male connector (20), comprising a collar member (26) having at least one tab (30, 32) with a radially inwardly projecting leg (35) which extends into an annular recess (39) between the male connection (20) and the female connection (22) to prevent axial movement of the collar member (26) along the connection assembly (16) and thereby maintain engagement of collar (26) around a non-circular (hexagonal) surface (47) of the female connector (22). Also part of the safety collar and tendon assembly (24) is a tendon or length of wire (40) which is secured at one end to collar (26) and at its other end is either secured to a similar collar on an adjacent threaded connection or to a fixed structure. Unthreading of the connection assembly (16) is prevented by the tendon (40), which prevents rotation of collar (26).

Abstract: A hitch for mounting a bucket on an excavator jib comprises a body (12) for mounting on a jib and defining first and second recesses (20, 21) for receiving respective first and second bucket mounting pins. A closure member (24) is mounted on the body and is movable between a retracted position, allowing location of a second bucket mounting pin in the second recess, and an extended position in which the member retains the second pin in the recess. The closure member has an axially movable carriage (26), the carriage being mounted on one or more guides extending transversely of the second recess (21).

Abstract: An end effector has a base on one end for mounting to an end of a robot. A mount plate is fastened to the base. The end effector also has a cylindrical body to which is mounted a mating plate. Each of these components have axial holes which align with one another. The mount plate has a pair of precision-ground bumps which mate with a pair of dimples in the mating plate. One matched bump and dimple pair is smaller in diameter than the other pair to facilitate alignment between the base and the body. The end effector also has a retaining extension spring which extends between the base and the body in tension. During routine operation, the robot moves the end effector and a tool fixture at its distal end to assemble components such as in a pick-and-place tasks. In the event that the end effector crashes into an object, the body will rotate away from the base and the bumps slide out of the dimples. The spring keeps the parts together as the base remains rigidly mounted to the robot arm and the body deflect away.

Abstract: An apparatus for mixing powdered or premixed drywall joint compound and water to form a joint compound mixture or slurry includes a portable container rig with a container, pumping components, and mixing components on a dolly that includes an arrangement for holding the mixing components in an elevated position. A mixing element rests within the container upon the container base, while a mixing element driver assembly that is adapted to rest upon the upper lip portion of the container engages the mixing element and rotates it for mixing purposes while at the same time raising it slightly. The pumping components may include various commercially available valves and pump outlets that facilitate the filling of various tape application tools, and one preferred embodiment includes remote control components featuring automatic pump turnoff.