Abstract: A pressure indicator rod is attached to a spring pressed piston mounted upon a cap for a plumbing line. The rod is entirely retracted in the absence of pressure to be protected from impact and to be shielded from vandals. The indicator rod is visible from any angle for ease of reading.

Abstract: In a water mattress, a series of interior bags or bladders are individually attached to the top and bottom layers in order to damp the movement of water. Each bag or bladder comprises a pair of disks peripherally heat sealed together. The disks are respectively heat sealed to the top and bottom layers. The improvement consists of a method of attachment of the bags or bladders to the top and bottom layers. A removable floating ring die is inserted between the companion disks. Large area dielectric plates close about the disks and ring die. Seals are achieved with very little distortion of the top and bottom mattress layers. The floating die is removed. The process is repeated until all the bags or bladders are attached. The strength of the top and bottom layers is not significantly impaired by the welding process, since no localized stress regions are created there. The hazard of leakage is largely eliminated.

Abstract: When the regulator is stored, a removable spacer is interposed between the pressure sensing diaphragm and the regulator case in order to position the resilient closure of the demand valve away from its seat. The resilience of the unconfined closure causes it to assume its normal free configuration. A compression set, which would impair sealing capability, is avoided.

Abstract: A pair of hinges have cases mounted at the very corners of a cabinet opening to define a pivot axis for a door. The cases are relatively narrow in the direction from front to back but of significant size at the region of the corner whereby the cabinet is braced by the hinge cases. Quadrilateral links are pivoted by and extend frontally of the corresponding cabinet cases to move in spaced parallel planes without interference.The hinge leaves for the door have cases accommodated in slots at the back of the door that extend perpendicular to the pivot axis. These cases pivotally mount the other ends of the quadrilateral links for movement without interference. By virtue of the staggered arrangement, a door movement in excess of 90.degree. is readily provided. A spring for self closing operation is accommodated in the case for one of the hinge leaves.

Abstract: The adapter has a large diameter circular base to fit the corresponding large diameter hole of the record disc. The adapter is generally conical with its tip generally cylindrically extended at which region a plurality of notches or grooves preferably are formed. The edge of the record disc hole is engaged to catch the disc if it tends to bounce or slide away. The tip also provides a handle for an attachment otherwise difficult to grasp.

Abstract: To achieve maximum strength and reliability, a bag for use as a waterbed mattress is formed entirely of lap welds, that is, without any butt welds. My U.S. Pat. No. 3,825,172 discloses a lap weld method in which a length of plastic material is rolled to form a tube, the ends being lapped and partially welded to leave an access opening to the inside of the bag. The tube is telescoped over a welding die having the cross sectional configuration of the mattress, but axially short. The tube is accordion folded about the thin form with the ends of the tube turned inwardly over the peripheral rims of the form. End pieces are then welded in place. The form is removed through the access opening and the partial weld completed by the aid of a separator stick removable through the fill hole.

Abstract: The swivelled knob provides an exterior grip portion and a laterally opening finger defined by a thin walled flange. These characteristics provide optimum characteristics for three modes of reel operation: power retrieval for bringing in a catch; fast retrieve of a line and lure by a finger twirling operation; and sensitive lure retrieve or play by engagement of the thin walled flange by the opposed thumb and forefinger.

Abstract: A solar collector comprises a series of absorber modules each formed as an extrusion that forms side-by-side flow channels. In one form of the invention, end plates close the flow channels at their ends, the ribs between the flow channels being cut away at their ends in order to define a sinuous flow path from the outside to the inside of the collector. The absorber modules are supported at the relatively low temperature sides adjacent the inlets, and with conductive engagement only with the bottom wall of the absorber.

Abstract: An exercise wheel has a noncircular periphery preferably formed by a series of equiangularly spaced teeth. Handles are mounted on ends of an axle projecting through the wheel. As the wheel is moved along the floor, vibrations are imparted to the user through the axle and handles.

Abstract: The lever mechanism includes an easy-to-clean cowl which covers the end of a fixture containing a mixing valve. A generally cylindrical fulcrum bracket, attached to the valve body, forms the topmost static element of the fixture. The cowl has a central cup that projects centrally into the fulcrum bracket. The mixing valve control stem is pivotally coupled to the bottom of this cup. A cowl skirt surrounds the fulcrum bracket. A fulcrum member, advantageously either a pin or a ball, is attached to the cowl interior and projects into an annular, outwardly opening receiving groove at the periphery of the fulcrum bracket. Tilting of the operating lever cowl moves the valve stem axially to control flow volume. During such tilting the fulcrum member moves radially in the receiving groove; this changes the location of the fulcrum point so as to prevent lateral displacement of the valve stem. Angular motion of the cowl imparts concomitant mixture controlling angular movement to the mixing valve stem.

Abstract: A burnishing attachment includes a carriage mounted for traversing movement in a path that extends along the workpiece. A non-rotary burnishing tool is mounted on said carriage for movement perpendicular to the carriage path. The tool is urged toward the rotating workpiece with a force that is a preset function of the position of the tool along the workpiece whereby the burnishing force adjusts to the appropriate amount. The tool is pivoted so that its surface maintains a normal relationship to the workpiece notwithstanding a change in angularity of the workpiece surface and the tool mounting.

Abstract: A weakened underwater section of deteriorating pile is provided with a concrete splint. One of two companion seal members is first installed below the weakened section. A split tubular form is then installed about the section. The lower end of the form provides the second of the companion seal members that engages beneath the first seal member. The form is supported from above as water is pumped from the form. The buoyant upthrust moves the companion sealing members into firm sealing engagement. After the suspension for the form is adjusted, concrete is poured into the nearly dry form. The concrete mix is not compromised by contamination with seawater and a structurally sound splint is formed.

Abstract: A connection between a handle and a valve stem is provided by a snap latch arrangement. The usual button at the top of the handle carries a dog bar that prevents the detent from releasing when the button is in place. But when the button is removed, the handle is automatically removable by upward force. No attachment screw need be manipulated. When the handle is removed, a cartridge can be removed. The cartridge includes a frontally facing segment that fits into the cylindrical contour of the valve body cup. The segment is snapped outwardly whereupon the segment, together with associated valve parts can be lifted from the valve cup for repair or replacement.

Abstract: A metal door frame has trim molding applied to its flanges by the aid of separate clips. Each clip interfits an aperture in the flange and a notch at the flange edge. The aperture and the notch are punched in the flange so that the spacing thereof from the corner of the flange is constant whereby alignment of the clips is assured notwithstanding lack of critical dimensional control of the flange.

Abstract: A nose cone for attachment to cargo trailers provides stability and fuel economy. In addition to these properties, the nose cone is inflatable and readily detachable so that it can be used in fleet operation without down time.

Abstract: The collapsible shelter structure comprises a series of panels held in angularly spaced relationship to define a shelter structure. The framework of each panel comprises a pair of generally parallel bars held in spaced relationship by a single central strut. Corresponding ends of the bars are tied together by flexible means, such as a sheet of fabric, preventing the bars from moving out of parallel. The fabric is slightly stretched by the strut. Conveniently, a single bar is common to adjacent panels similarly formed. In order to determine the angularity of adjacent panels, each intermediate bar is provided with a link piloted on the central portion of the bar, the link having two angularly spaced rigid plugs, one detachably telescoped into the brace of one panel and the other detachably telescoped into the brace of the adjacent panel. A solid, but readily erected and collapsed shelter structure results.

Abstract: A multiband speaker system means includes a high frequency section normally balanced with one or more lower freqency sections. A thermistor is serially associated only with the high frequency section whereby, for certain high power signal combinations, a lesser proportionate increase in output occurs in the high frequency section than the low frequency section. This not only makes possible a lower power rating, but also eliminates certain effects that are not musically desirable.

Abstract: A cabinet structure has side-by-side slab cabinet doors that nearly abut each other. Linkage elements, mounted on the inside, support the doors for a compound pivotal movement whereby the initial opening movement of the door includes a shifting component so that the door does not invade the space occupied by the adjacent door. A spring arrangement provides not only a self-closing operation, but also a shock mounting in the open position whereby high leverage stresses upon the hardware is eliminated.

Abstract: This complementary photovoltaic cell has both an N+/P+ junction and a P+/N junction on the same epitaxial substrate, and so provides simultaneous photo-responsive outputs of both negative and positive polarity. A vertical photo-junction supplements the current output from the N+/P+ junction, and improves the efficiency of the cell. The N+/P+ junction by itself exhibits a high open circuit voltage.

Abstract: The diving mask incorporates a clamp operated from the outside for squeezing the diver's nostrils together so that he can then "clear his ears," which is the act of allowing, or gently forcing, air through the restriction of the eustachian tubes to equalize the inner ear pressure to that of the increasing ambient pressure. The elements of the clamp are movable in arcuate paths centered above the nostrils in order to achieve a comfortable closure. The handle ends of the clamp are conveniently accommodated in a flexible enlargement of the mask body. A wide strap has a four point quick attachment to the rear of the mask body. The strap is formed of adjustable looped elastic cord that adjusts comfortably to the diver's conformation while fully stabilizing the mask on the wearer's face.