Abstract: A load compacting and ejecting mechanism for a refuse truck having an open rectangular body and an openable tailgate. An ejector plate extends across the body and is mounted for movement from front to back through the body. The ejector plate has a centrally located compaction plate which is mounted on the ejector plate structure for movement between a front position in which it constitutes a part of the rear face of the ejector plate and a second position rearwardly of the rear face of the ejector plate. A main hydraulic cylinder means extends between and is connected to the front of the body and to the compaction plate. A second hydraulic cylinder means is connected between the main structure of the ejector plate and the compaction plate. A first hydraulic circuit connects the opposite ends of the first cylinder means to a source of hydraulic fluid and includes a control valve for alternatively extending and retracting the main cylinder.

Abstract: A tailgate for a rear loading refuse vehicle. The tailgate has vertical side walls and a hopper-like bottom. There is an upwardly and forwardly inclined guide track in each of the side walls. A slide block is reciprocated in each guide track by one of a pair of packing cylinders which extend along and are spaced laterally from the guide tracks with the bases of the cylinders at the upper ends of the tracks and the ends of their rods connected to the slide blocks. A generally rectangular packer blade is pivotally supported along its upper edge by the guide blocks. A pair of sweep cylinders are pivotally connected at the upper rear corner of the tailgate and their rods are pivotally connected to the packer blade at a point intermediate its upper and lower edges.

Abstract: A child-resistant cap and neck finish for a container. The cap has a disc-like top and a depending skirt. The cap skirt and container neck have mating threads, which may be single or multi-start. The cap skirt has a lower, generally annular, or slightly oval locking collar that is connected to the threaded skirt only by flexible webs. The cap skirt and collar are unitary. The collar and the container neck have cooperating child-resistant means which are disengaged by squeezing the collar radially inwardly from opposite sides to bulge it outwardly in the direction normal to the direction of squeezing. The child-resistant elements on the collar are thereby moved out of engagement with those on the container neck and the cap may be turned in a retrograde direction.

Abstract: Child-resistant locking means for a twist-action cap for a container. The locking means has two cooperating parts. There is an abutment on the container near, but spaced radially from, the container neck and a tab on the cap which engages the abutment and prevents retrograde rotation of the cap. The tab is flexed inwardly in order to be moved past the abutment both when the cap is screwed onto the container neck and when it is desired to remove the cap from the container neck.

Abstract: A combination threaded cap and neck finish for a liquid container having mating threads on the cap interior and the exterior of the neck and also having second cooperating cam means on the cap and the container neck for applying downward thrust to the cap to maintain liquid tight sealing of the container neck even when the cap is rotated in the loosening direction through an angle relative to the container neck so as to disengage the downward thrusting surfaces of the mating threads. Some embodiments of the invention also have child-resistant cooperating means which prevent removal of the cap unless such means are disengaged by a separate and different manipulation.

Abstract: A substantially leak-proof and child-resistant combination closure comprising a container and a cap. The container has a neck and the cap has a tubular skirt which fits over the container neck, a disc-like top and resilient annular shoulder portion. The cap skirt and bottle neck have cooperating means for retaining the cap on the container. There is a sealing liner beneath the top of the cap which engages and seals the open end of the container neck. The cap skirt and the container in some embodiments have cooperating locking means which are engaged when the cap is moved down to normal closed position on the bottle neck. The locking means function to render the closure child-resistant. Other embodiments have tamper indicating means. The resilient shoulder portion of the cap flexes to compensate for tolerance variations in the cooperating retaining means on the cap and container neck in order to insure that the cap liner seals the neck of the container.

Abstract: A combination threaded cap and neck finish for a liquid container having mating threads on the cap interior and the exterior of the neck and also having second cooperating cam means on the cap and the container neck for applying downward thrust to the cap to maintain liquid tight sealing of the container neck even when the cap is rotated in the loosening direction through an angle relative to the container neck so as to disengage the downward thrusting surfaces of the mating threads. One embodiment of the invention also has child-resistant cooperating means preventing removal of the cap unless such means are disengaged by a separate and different manipulation.

Abstract: A child-resistant closure for a liquid container having a threaded neck. The closure comprises an inverted cup-shaped cap which has a shirt and on the inner side of its skirt has a thread that mates with the neck thread. The child-resistant means consists of an outwardly extending ring attached to the end of the skirt by frangible webs. The ring has a gap that is defined by an abutment at one end and a stop at the other end. A tab which permanently is connected to the cap skirt lies in the gap. The cap, ring and tab are unitary and are turned onto the neck to liquid sealing position at which time the ring engages a shoulder formed on the container at or near the base of the neck. The ring is then affixed to the shoulder. The container is opened by flexing the tab upwardly above the level of the abutment on the ring and rotating the cap and tab in a retrograde direction relative to the ring which breaks the frangible webs.

Abstract: A multi-blade damper for an exhaust duct through which heated air flows after passage through heat exchange coils carrying a hot, liquid heat exchange medium which is subject to solidification if cooled too greatly, for example, sodium. When the heat exchange medium is very hot, air is forced through the duct by high volume fans and the damper blades are opened widely. When the source of heat to the heat exchange medium is shut down, however, the flow of the heat exchange medium and its temperature are greatly reduced. Even if the fans are shut off at this point, the natural draft of air through the duct may so cool the coils of the heat exchanger that the medium will freeze in the coils. Under these conditions, some of the damper blades are closed to majorly reduce the air flow. However, during the transition from hot operating conditions to stand-by conditions and during stand-by periods, the heat exchange medium must be kept hot enough to prevent solidification.

Abstract: A tamper-indicating closure combination consisting of a container having a circular neck and a twist-on cap therefor. The container neck has external interrupted thread sections with ratchet teeth on their under surfaces. The cap has similar, cooperating internal thread sections on the inner surface of its skirt with ratchet teeth on their upper surfaces. When the cap is turned onto the neck, the sets of ratchet teeth interengage and lock the cap against retrograde rotation. The cap also has a puller which is connected to the cap, a first section thereof being connected by frangible portions and a second section thereof being connected permanently to said cap. In order to remove the cap, the puller is broken away at the first section and then is pulled upwardly and outwardly relative to the container neck to disengage the cooperating sets of ratchet teeth. The cap is replaced by turning it onto the bottle neck for re-engaging the cooperating threads and ratchet teeth.

Abstract: A safety cap for sealing a container is disclosed. The cap is adapted to a container having a sidewall and annular upper shoulder extending to a neck portion that is threaded. In the vicinity of the neck portion is a cam member having a lug recess in the vicinity of the eccentric portion of the cam.The cap comprises an inner cup member with an integral continuous sidewall for sealing the container. On the inner cup member's interior surface, threads are formed to mate with the threads on the container. The sidewall has at least one downwardly projecting lug adapted to contact the recess on the cam member when the cap is in its sealing position. Alternatively, the inner cup member can include an inner cup with threads and a middle cup with lugs.Connected to the inner cup member or molded in one piece is an over cup that has a diameter equal to the span of an adult's hand. This cup is located so that when a force is exerted against it, it transversely deforms and translates the force to the inner cup member.

Abstract: A side loading refuse truck having a reciprocable ram in the bottom of a loading compartment at the front of the truck for pushing rubbish from the loading compartment through an opening therefrom at the bottom of the rear wall of the loading compartment into a larger rear body section. Hydraulic mechanism moves the ram in short strokes through the loading compartment for packing refuse rearwardly into the larger body section. The body has an openable rear wall. The hydraulic mechanism also can be actuated to move the ram rearwardly through the opening and along the bottom of the larger rear body section to the rear thereof for ejecting refuse from the larger body section. There is a vertical guide track up which at least the greater part of an articulated sliding shield extends when the ram is forward of or in the bottom of the loading compartment.

Abstract: A child-resistant overcap adapted to be positioned over a threaded screw cap which has axially extending ribs on the outer surface of its threaded skirt, in order to make the entire closure child-resistant. The overcap has a disc-like top and a cylindrical skirt which nests over the screw cap. An inwardly extending lip on the bottom edge of the overcap skirt retains the overcap in position after assembly. The disc-like top of the overcap is slotted with at least two diametric slots, arranged with their axes normal to each other. One slot is formed by two diametrically opposed, outwardlyconverging pairs of edges defining V-notches and the other slot may be a narrow slit. The inner wall of the overcap skirt has at least one axial driving rib which protrudes radially inwardly and is located at the outer end of the narrow slit.

Abstract: A tamperproof child resistant closure for a medicine bottle or the like. The closure has an inner threaded cap and an outer driver nested over the cap. There is a first co-operating, one-way clutch means on the driver and cap for screwing the cap onto the bottle. There is a second one-way, co-operating clutch means comprising an abutment on the outer wall of the cap skirt and an inwardly movable segment of the driver skirt. There is a removable sector portion of the driver top that is frangibly connected to the upper end of the segment and to the driver top which initially prevents inward movement of the segment for engaging the second clutch means.

Abstract: An apparatus for dumping refuse containers having outwardly extending co-axial trunnions at their upper front corners. The apparatus consists of two laterally spaced, co-acting mechanisms between which the container is located for dumping. Each of the two mechanisms has a vertically movable lever, both of the levers being pivoted on a common horizontal pivot line on a structure that remains stationary while a container is being dumped. The lower ends of the levers are connected by a cross member which engages the container at a level beneath the trunnions. Each of the mechanisms also has opposed trunnion locks which are moved by a hydraulic cylinder to engage the trunnions. Thereafter, through a lost motion connection, the levers and cross member are swung rearwardly and upwardly by the hydraulic cylinders in order to tip the container over for dumping the refuse.