Abstract: A Chrysanthemum plant named Yellow Blush particularly characterized by its flat capitulum form; daisy capitulum type; yellow ray floret color; diameter across face of capitulum of 127 to 140 mm when fully opened, when grown as a pinched disbudded pot mum; photoperiodic flowering response to short days of 53 to 58 days; plant height, with 20 to 22 long days after sticking unrooted cuttings and with 1 to 2 applications of 2500 ppm B-9 SP, ranges from 23 to 28 cm when grown as a pinched pot mum with 4 cuttings in a 15 cm pot; branching pattern is semi-spreading, each plant having 3 to 5 laterals after pinch; and recommended as disbudded pot mum.

Abstract: A new and distinct Alstroemeria variety producing flowers of good quality of unusual red coloration.

Abstract: A reciprocating conveyor includes a plurality of elongated, load-supporting reciprocative slats mounted on a plurality of elongated, liquid-impervious slat-mounting base members secured side-by-side across a supporting frame. The adjacent sides of adjacent base members are interconnected by a waterproof seal, whereby the assembly of base members forms a waterproof floor under the reciprocative slats. A liquid collection receptacle is mounted on the frame adjacent one end of the base assembly to receive the liquid content of a load supported on the slats, and a drive mechanism for reciprocating the slats is contained within the receptacle and connected to the reciprocative slats through slots formed in the base members above the collection receptacle.

Abstract: A means and method for capillary zone electrphoresis with laser-induced indirect fluorescence detection. A detector is positioned on the capillary tube of a capillary zone electrophoresis system. The detector includes a laser which generates a laser beam which is imposed upon a small portion of the capillary tube. Fluorescence of the elutant electromigrating through the capillary tube is indirectly detected and recorded.

Abstract: An adaptive predictive encoding apparatus for encoding a video signal by utilizing correlation between frames in both the forward and reverse directions of the time axis. A prediction signal for use in deriving prediction error values to be encoded for a frame is selected by an adaptive prediction section, in units of blocks, from a plurality of mutually differently derived prediction signals, in accordance with the degree of correlation of the block with corresponding ones of a specific preceding independently encoded frame and a specific succeeding independently encoded frame. .Iadd.A complementary adaptive decoding apparatus receives the encoded information and reconstructs the video signal in accordance with information supplied to the adaptive decoding apparatus by the encoding signal. .Iaddend.

Abstract: An electrical connector is disclosed which includes a dielectric housing with passages for receiving a plurality of signal terminals. A common ground member is disposed in the dielectric housing with portions thereof disposed between the individual signal terminals. The ground member has a passage for receiving a ground terminal.

Abstract: A buffer structure improvement of a body part protector having a pad, and a board having a generally arcuate cross-section with a string. Between the pad and the board is a buffer web attached to the board with a buffer spacing between the web and the board.

Abstract: A cap with an attached flexible film that protects eyes from sunlight. The film, which serves as sunglass lenses, is attached to the base portion at the front of the cap either by stitches or a VELCRO.TM. fastener. The film can be flipped up inside the cap out of sight when not needed. When the film is in its down position, it can be adjusted for fit by sliding upward or downward as required to conform to height of one's nose bridge.

Abstract: An adjustable eyeglass retainer headpiece (10) has a circumferential slit (20) in a cap (12) thereof spaced a substantial distance above a lower edge (16a ) of the cap but below an attachment area (22) of a proximal end portion(30) of an eyeglass retainer member (14). The retainer member (14) extends from the attachment area through the slit to an interior surface (24) of the cap and from there to a distal end portion (32) which extends below the lower edge of the cap for passing about a nose bridge (52) of eyeglasses (50). A lower-edge margin (26) of the cap extending between the lower edge and the slit is substantially unattached to the retainer member so that it can be folded upwardly to adjust the size of the cap.

Abstract: The invention is an exercise shroud for use by exercisers to conceal perspiration stains on their exercise garments. It is formed of a waistband and at least two layers of material attached to the back portion of the waistband. The layers extend downward from the waistband and are configured and sized such to cover the backside of an exerciser. The inner and outer layers of material are separable from each other and are detachable from the waistband. Hook-and-loop fasteners are the preferred fastener for connecting the inner and outer layers together and for attaching them to the waistband. The inner layer is made of a moisture-repellent material. Being moisture-repellent, this layer prevents the perspiration from penetrating to the outer visible layer. When worn by an exerciser, the shroud conceals perspiration stains which have penetrated the exerciser's exercise garment and have become outwardly visible.

Abstract: A bib panel for covering the chest and part of the neck of a dental patent is made of bonded composite liquid impervious and treated liquid absorbent material, is generally rectangular in form and has a circular cut-out for the patient's neck. A strip of adhesive extends across the top edge of the back of the panel. The adhesive is a pressure sensitive adhesive and has the property that it can be attached to the front of another bib panel and then removed without contaminating the adhesive. A plurality of bib panels are stacked and attached together to form a pad of panels for dispensing the panels by peeling the top panel from the one below it. The plurality of panels are attached to a support back or, placed in a disposing tray, the bottom panel adhering to the support back or the bottom of the dispensing tray.

Abstract: This invention provides a fashion belt capable of being applied to various kinds of materials and various cross-sectional shapes, and tightened and loosened easily. This fashion belt is formed by a belt body (1), and a locking member 30 capable of fixing one end portion of the belt body thereto, receiving the other end portion of the belt body so that the tightening length of the belt body can be regulated, and locking and unlocking the second-mentioned end portion thereof in an arbitrary position of insertion thereof.

Abstract: Warp knitted briefs are produced of two congruent lengths of knitted material. The lengths are knitted together transversely to their direction of production across the width of the material, with a distance therebetween, forming side seams. In the center of the briefs, between two side seams, starting from one of the longitudinal material edges, the layers are knitted together to form a gusset region. In the vicinity of the side seams, additional connecting areas are provided between the two lengths of knitted material, which form the front and the back of the briefs. The connecting areas are tearable under a predetermined tensile load without damaging the knitted lengths of material.

Abstract: A toilet ventilation system has an intake member located directly adjacent the toilet bowl of a toilet. The intake member is coupled to a manifold which permits odors from the toilet to be transferred from the intake member on the toilet to a ventilation pipe located adjacent the toilet. A fan is located at a remote end of the ventilation pipe for drawing odors through the intake member, the manifold, and the ventilation pipe, and expelling the odors into a ventilation area. The intake member is removably located in the manifold through a manifold inlet and may be removed from the manifold. The ventilation pipe is located in the manifold through a manifold outlet. The manifold may be rotated about the ventilation pipe when the intake member has been removed from the manifold inlet, for cleaning purposes. In another embodiment, the toilet bowl has an integrally coupled exhaust manifold with a removable receptacle or sump for receiving liquids and for allowing the manifold to be readily cleaned.

Abstract: A two-stage flush device for a toilet tank, comprising a cylindrical bolt having a center hole and fixed in a hole of a side wall of a toilet tank and partly exposing out of the side wall, a rotatable button having a shaft portion fitting in the center hole of the cylindrical bolt and also firmly connected with a first actauting arm connected with a low-level valve by way of chain, a rod connected to a button at an outer side and extending through the center hole of the rotatable button to operate a second actuating arm connected with a high-level valve by way of a chain, the first actuating arm lifted by the rotatable button for flushing a larger volume of water, and the rod operating the actuating arm for flushing a smaller volume of water.

Abstract: A bathtub, in particular a whirlpool bath, includes a pair of handles for aiding one into and out of the tub body, and control and actuation elements, as well as water delivery elements mounted to the handles. These elements include an actuator for actuating the plug provided to stop up the drain, an actuator in the form of a control valve for mixing hot water with cold water so as to achieve a single flow of water at a desired temperature, a hand-shower, an actuator to divert water to an extractable nozzle of the hand-shower, a control element for starting and stopping the operation of a water circulating pump and an air blowing pump of the whirlpool bath, a plug of a reservoir for liquid disinfectant, and a switch to actuate a valve which admits the liquid disinfectant into a water circulation circuit of the tub. One of the handles which accommodates the extractable hand-shower also includes another water delivery element in the form of a water outlet through which water cascades into the tub body.

Abstract: A portable infant support system is provided for installation in a conventional bathtub so that an infant can be supported in a prone position above the tub water level while the mother is washing or bathing the infant. The support system includes a flexible foam rubber panel suspended within the tub by four or more suction cups at the corners of the panel. Each suction cup is adherred to an internal side surface of the tub to suspend a portion of the panel. The suction cups can be slid along the tub side surface to adjust to the position of the foam panel.

Abstract: A multipurpose, multisectional mat for a child's use in resting, sitting, lying, reading and like activities comprising multiple articulated sections interconnected to form a mat which when flat provides a continuous resting surface formed by edge-to-edge abutting sections to accommodate a recumbent child and which when folded with the sections abutted face-to-face will provide a child's seat or table, each section comprising a generally rectangular soft cushion pad of substantial thickness and resilience and a fabric cover covering the pad, the fabric being locally continued beyond the pads alternately high and low and joined there as a hinge between adjacent pads for edge-to-edge or face-to-face orientation.

Abstract: Mattresses and chaise longue cushions made of a core made of flexible polyurethane foam having two groups of rows perpendicular to the longitudinal axis of the core of continuous cavities each having an elongated cross section. Each of the elongated cross sections from about the center of the longitudinal axis of the core towards the end thereof is arranged in an oblique orientation relative to the mattress height. Between the two groups of rows of continuous cavities there is present one continuous cavity in a symmetric non-oblique orientation. This arrangement causes the vertebral column to be stretched and, hence, due to movements on the mattress or chaise lounge cushion, results in kind of vertebral column physical exercises producing some stretching effect.

Abstract: A fitted sheet is provided for use with a mattress having a top panel dimensioned to overlie the top surface of the mattress and side and end panels which extend downwardly along the sides and ends of the mattress. A first bottom panel extends under the bottom surface of the mattress and is fixedly secured to the side and top panels so that a portion of one end of the mattress is sandwiched in between the bottom panel and the top panel. Similarly, a second bottom panel extends along the bottom of the mattress adjacent the opposite end of the mattress. Unlike the first bottom panel, the second bottom panel is only fixedly secured to one side panel and a portion of one end panel of the fitted sheet. A detachable fastener, such a zipper, is then used to secure the remaining portion of the bottom panel to the opposite side panel so that a portion of the mattress is sandwiched in between the top panel and the second bottom panel while firmly retaining the fitted sheet to the mattress.

Abstract: A bed assembly for preventing the occurrence of bed sores on long term patients includes a bed frame which has a structural perimeter framework. An inflatable mattress has a bottom supported on the bed frame. The mattress has a top and a mattress periphery surrounding the top. A covering overlies the top of the inflatable mattress. The covering has a covering periphery. A plurality of tensioning devices are placed about the covering periphery and connected between the covering and the structural perimeter framework for holding the covering taut and smooth over the top of the inflatable mattress, and for holding down the mattress and preventing the mattress periphery from bending upwardly when a patient lies on the inflatable mattress.

Abstract: A cervical tee appliance including a cervical support member disposed at an angle of ten degrees to a vertical reference and affixed to a base member. The base member comprises a thick plate having a slot for engagement of the cervical support member and a frictionally engaging treatment of a surface engaging a floor. Frictionally engaging treatment of the base member may comprise rubber feet or a non-skid coating. The cervical support member comprises a central semicircular cutout which does not engage the cervical spine and symmetrically disposed scalloped portions which engage the atlantoocipital joint, and furthermore the engaging portions are covered by a cushioning layer. An alternate embodiment provides an adjustment for the angular disposition of the cervical support member.

Abstract: A foldable multiple function tool is presented herein. The tool includes a pair of members each having a gripping jaw at one end thereof and a tang at the opposite end thereof. A first pivot member pivotally interconnects the members together for pivotal movement about a first axis intermediate the respective ends of the members for movement between a jaw closed position and a jaw open position with the pivotal movement being about a first axis. A pair of handles are connected to the tangs for pivotal movement about second and third pivot axes with each handle being pivotally displacable between a foldable position and an extended position. The handles are spaced apart by a distance sufficient that when the handles are in their folded positions they receive therebetween the gripping jaws, when in a closed position with each handle serving to block pivotal movement of one of the jaws toward a jaw open position.

Abstract: A method and apparatus for continuous treatment of webs of fabric having an upright pile comprising spraying the pile fabric with a sheet of liquid and then optionally heat-setting the fabric. The spraying of pile fibers allows the fibers to return to their preferred upright orientation.

Abstract: In a method for continuously dyeing textile yarns (14), the yarns travel continuously in front of a succession of stations (15a, 15b, 15c) for applying dyes of different colors, each station applying a series of spots onto the yarns (14), so that each yarn includes a succession of spots forming a pattern extending over a certain length (L) of the yarn (14) and which is continuously repeated. The stations (15a, 15b, 15c) for applying the dye are commanded individually in order to corrupt the repetitiveness of the successive patterns. The method is useful for improving the quality of carpets obtained from textile yarns (14).

Abstract: A drive system for producing agitation and spin in an automatic washing machine incorporates a transmission assembly including a plurality of interengaged transmission elements located within a transmission housing. During agitation, the transmission housing is braked and the transmission elements convert input rotary drive from a motor to oscillator drive of an output shaft. During spin, a cam member carried by one of the transmission elements automatically shifts a stop element into engagement with the transmission housing. This maintains the transmission elements in a predetermined orientation, prevents relative rotation between each of the transmission elements and the transmission housing and causes the entire transmission assembly to rotate in unison which results in rotation of the output shaft.

Abstract: A slipper having a clog appearance is constructed with a soft fabric upper and a flexible molded outsole. The construction technique hides fabric seams.

Abstract: A portable, demountable bridge which can be self-launched. The bridge uses a traditional beam system to conform the deck of the bridge. Two hollow, bottom-plated, triangular footings are added as supports for this beam. These footings, buried into the soil of a riverbank or the bank of a chasm, absorb the horizontal forces using the weight of the soil above the bottom plates of the footings. Sets of vertical plane trusses parallel to the axis of the deck and located on each side of the deck at the entrance, help the beam of the deck to support vertical loads, by means of a transversal truss which touches the beam of the deck at its upper chord. Each set of the additional vertical plane trusses are founded on two bottom plated footings buried into the riverbank or the bank of a chasm. The footing near the water uses the soil as a bearing, and the other footing is used as a counterweight. The bridge also uses the soil of the riverbank or bank of the chasm as a protection against floods.

Abstract: A scraper for removing deposits from an interior of a chimney. The inventive device includes an elongated handle having a scraping plate attached to a lower end thereof for engaging and scraping the interior surfaces of the chimney. The scraping plate can be rectangular, semi-circular, or quarter-round in shape so as to accommodate a plurality of disparate chimney interior shapes.

Abstract: A utensil that is configured for scrubbing both baby bottles and nursing nipples for such bottles includes a handle that has a recess defined therein, a bottle brush operatively connected to the handle which is sized so as to be able to efficiently scrub an inside of a baby bottle, and a nipple brush assembly. The nipple brush assembly includes a nipple brush portion that is sized so as to be able to efficiently scrub an inside of a nursing nipple and a grip portion. It is releaseably attached to the handle so that said brush portion is positioned in the handle recess and the grip portion is grippable externally of the recess by a user, whereby said utensil can be used to conveniently scrub both baby bottles and nursing nipples.

Abstract: A personal cleansing implement comprises a tubular piece of hydrophobic diamond-mesh scrim, which is stretched to expand the diamond mesh, gathered along a longitudinal axis of the tubular piece of scrim to form circumferential pleats, and heat set in an expanded and pleated condition to form a substantially rectangular resilient batt. Top and bottom surfaces of the batt are bonded together adjacent the perimeter of the batt by a bonding means. Thread stitching or intermittent thermobonding are the preferred bonding means. Ultrasonic bonding is most preferred. A tether loop is connected to the implement for hanging it from a support during drying.

Abstract: The brush comprises a group of larger bristles having two subgroups of differently sized bristles and a group of smaller bristles having two subgroups of different sizes. The proportion of larger bristles being between 2% and 95% by volume in relation to the total volume of the tuft of the brush.

Abstract: An articulate toothbrush having a handle with an elongate grip and a support section extending from the grip to the brush head with an arch shape that diverges fron the longitudinal axis of the grip to an apex at a point of maximum divergence. The arch has a leg that returns toward the longitudinal axis of the grip to the axis of a pivot connection with a brush head which is a substantial distance toward the longitudinal axis of the grip from the apex of the arch. The brush head has a longitudinal axis and terminates along that axis in a heel in the direction of the grip of handle and in a toe in the direction away from the grip. The top of the brush head is proximal to the distal leg of the support and the bottom of the brush head, which is distal to the distal leg, has bristles depending therefrom.

Abstract: A container cleaning spatula includes a generally rectangular scoop attached to an elongated handle. A pair of tabs extend rearwardly from a rearward edge of the scoop. The tabs have outside edges that are collinear with the straight side edges of the scoop, and are coplanar with the edge portions thereof. The spatula is used to remove residual viscous material from a container by scraping a straight side edge of the scoop against the wall of the container. The spatula is also used to remove residual material from under an inverted U-shaped rim of a typical container by engaging a tab thereunder, and running the tab therealong.

Abstract: A utensil having a blade and handle portion that resists damage from the heat generated in cooking. The blade portion made of a rubber silicone compound which resists melting, burning, cracking, discoloring, or permanently bending, even under vigorous cooking situations. The handle is made of a heat-resistant glass reinforced PBT resin which is not susceptible to melting, scorching, absorbing odors, or discoloring. In addition, the molding process between the handle and the blade resists separation of the two parts and eliminates gaps which could house bacteria.

Abstract: Described is a new portable workstation dust collection attachment for collecting and removing, in combination with a suctioning filter apparatus such as a vacuum cleaner, dust and other airborne particulate matter produced during processing of a workpiece. The portable workstation dust collection attachment comprises a funnel-shaped dust intake structure having an upwardly opening rectangular suctioning aperture defined by the large end of the funnel and a pressure port defined by the small end of the funnel. Also included is an upwardly projecting protective plate whereby the dust is guided into the suctioning aperture. A supporting stand is further included.

Abstract: A solder paste or conductive ink printer stencil wiper apparatus combining a dual action of sucking stencil holes and simultaneously wiping the bottom of the stencil for excess solder. The apparatus includes a vacuum nozzle constructed and arranged to draw excess solder gathered in the holes of the stencil through the nozzle to a collection reservoir. The apparatus also includes a wiping element for wiping the bottom of the stencil at the same time the vacuum is sucking solder out of the stencil holes. The wiper includes a wiper fabric to wipe the bottom of the stencil. The fabric is provided on a roll, and the fabric is pulled through a series of rollers by a motor and collected on a take-up roller.

Abstract: A handle device includes a board having a groove laterally formed in the rear portion and having two holes formed in the middle portion and communicating with the groove. A pair of slots are formed in the front portion of the board and communicating with the holes. The slots each includes two end portions. A U-shaped handle includes a middle portion engaged in the groove and includes two legs extended through the holes and rotatably engaged in the slots. The slots of the board each includes a narrower middle portion so as to maintain the legs of the handle in either of the end portions of the slot.

Abstract: A hinge for mounting a door or like closure within a frame. The hinge comprises a first leaf pivotally coupled to a second leaf. The first leaf has a locating lug which interfits with a recess of the second leaf when the first and second leaves are at a predetermined angular disposition one to the other. This prevents a door mounted by the hinge from being removed from the frame even if the pin which pivotally couples the leaves together is forcibly removed. The first and second leaves are preferably coupled together by a coupling whereby the position of the second leaf relative to the axis of pivotal coupling can be selectively adjusted.

Abstract: A hinge assembly for rotatably coupling a first member to a second member which includes a friction element for being secured to the first member. The friction element has an internal surface defining a generally cylindrical cavity. The friction element is geometrically configured to have substantially uniform strength. A generally cylindrical pintle for being secured to the second member includes an external surface and is positioned within the cavity with the external surface of the pintle being in facing frictional engagement with the internal surface of the friction element. As such, substantially uniform forces are created between the external surface of the pintle and the internal surface of the friction element to provide torque transfer and angular positional control of the pintle with respect to the friction element.

Abstract: A vehicle door hinge is described.

Abstract: Disclosed are various needle-based devices for individualizing single fibers and other entities from a fibrous mass, particularly for testing purposes. In one embodiment, an accelerated pin drafting machine has a plurality of combing elements which sequentially pierce a fiber mat and move within a drafting zone with increasing distance between adjacent combing elements. The accelerated pin drafting machine in turn feeds a fiber individualizer. In another embodiment, a comb-like needle sampler is provided which moves past a perforated plate such that portions of fibrous material protruding through the perforations are loaded onto the needle sampler. An elastomer clamping feedroll moves against the needles to clamp the sample, and then rotates to gradually feed fibers from the sampler. As an alternative to the elastomer clamping feedroll, a clamping block presses against the needles, and the needles are slowly retracted to gradually release fibers.

Abstract: A system for handling sliver produced by a fiber processing machine includes a sliver coiler head forming part of the fiber processing machine; and a coiler can supported in a substantially upright position under the coiler head for receiving sliver therefrom. The coiler can has a vertical wall and a can bottom surrounded by the vertical wall and being vertically displaceable relative to the wall. The system further has a can bottom shifting apparatus disposed externally of the coiler can and facing the vertical wall. The apparatus includes a carrier arrangement for at least indirectly engaging the can bottom for vertically shifting the can bottom.

Abstract: An eyeglass holder having a cross-shaped clip (305) on which two shaped parts (341) are fastened for holding the eyeglasses fast and clamping the eyeglass holder (301) firmly on the breast pocket of an article of clothing (317). The shaped parts (341) can be pushed over the ends (312) of the beam (309) and adapted to the size of the eyeglasses to be held. On the vertical beam (307) there is fastened a holding part (308) by which the eyeglass holder (301) can be fastened to the breast pocket or another part of an article of clothing.

Abstract: A method of polarizing selected areas of a foil of ferroelectric material, wherein electrodes are deposited in such a way on the opposite surfaces of the foil that the zone to be polarized extends between these two electrodes. The zone to be polarized is compressed and a variable voltage is applied across the electrodes. Each electrode is connected to an insulating support whose surface exceeds that of the zone to be polarized on the foil of ferroelectric material. Besides the electrode, the insulating support has a layer of dielectric material whose external surface is level with the external surface of the electrode.

Abstract: A repair of a hollow tubular member adapted to contain a fluid under pressure, is performed by securing to the hollow tubular member to be repaired one end of a flexible tape consisting of continuous longitudinal fibers that occupy from 30-60% of the cross section of the tape, the fibers being encased in a thermoplastic matrix, the elastic limit of the material of the fibers being greater than the elastic limit of the material of the tubular member. The tape is caused to revolve around the tubular member while displacing the tape axially along the tubular member in order to wind the tape around the tubular member in a helix. The tape is heated immediately prior to its application to the tubular member and is cooled immediately following its application to the tubular member.

Abstract: A process for forming a support frame for a roller guide of the type designed to be mounted on a conventional fishing rod by means of continuously supplying an elongated metallic material strip of predetermined width to a plurality of adjacently positioned and simultaneously operable work stations each of which is defined by punching or stamping facilities such that the strip is moved along a path of travel defined by the work stations in a "stop and go" mode wherein the strip is stopped at each work station for simultaneously forming and shaping at each location to produce a semi-formed roller guide frame and further wherein the last, end most work station completes the shaping on the elongated strip to produce a formed roller guide frame which is simultaneously severed from the remainder of the strip and semi-formed work guides.

Abstract: A joint prosthesis for interconnecting the ends of adjoining bones includes a cushion of expanded PTFE having at least two facets for attachment to the bones. The cushion may or may not include stems for insertion into the bones. An optional sheath surrounds the non-facet surfaces of the cushion for preventing adherence of tissue. The motion of the prosthesis is defined or limited by the orientation of the facets and/or by the porosity of the cushion and/or by an insert within the cushion.

Abstract: A composite tube and method of manufacture are provided. The composite tube is formed from a plurality of tube segments which are different from one another. The tube segments may differ in cross-sectional dimensions and/or material of manufacture. The tube segments are welded in end-to-end relationship to define a composite tube. The composite tube is then bent into a selected non-linear shape. Preferably, the welds are disposed at locations on tangents between adjacent bends. Bending forces and bending speed are altered from one bend to the next in view of anticipated strength and metallurgical characteristics of the particular tube segment in which the bend is being carried out.

Abstract: A novel hybrid air bag inflator system includes a differential pressure monitoring switch which comprises a sealed module containing a gas under a threshold pressure mounted in a gas bag filler tank. The capsule comprises a movable diaphragm connected to a fixed top plate and the diaphragm is supported on a shaped mandrel mounted on a switch body. The switch body and the mandrel are provided with a central aperture through which moves a movable piston and the movable piston forms a support for switch contacts which are normally open until the pressure P1 in the hybrid air bag gas filler tank falls below a predetermined operable reference pressure P at which time the switch contacts reach a closed position indicative of a failed or inoperative hybrid system.