baber/WOPTO huggingface dataset:
Patent IT-MO980019-A1 (IT)
Inventor: CATTANI ENNIO
IPC: A61C17/06
Filed: 1998-01-29
Abstract: A separator centrifuge (1) for separating solid particles suspended in a fluid comprises a container (2) having an inlet (A) for the fluid and an outlet (B) for the fluid once cleaned of the solid particles, the outlet (B) being situated higher than the inlet (A). The container (2) has a truncoconical wall (3) converging in a downwards direction, at a smaller end of which is located a discharge (4) which is connected to a chamber (7) for collecting the solid particles. The inlet (A) of the container comprises a plurality of mouths (13) each of which is crossed by a fraction of a total volume of fluid entering the container (2). The fluid is injected into the container (2) in a direction which has at least one component which is tangential with respect to an axis of the truncoconical wall (3). The separator is particularly useful for separating solid particles in discharge fluids coming from dental equipment. <IMAGE>
Patent IT-PD950223-A1 (IT)
Title: Cofano mortuario con rivestimento interno a rete non deperibile
Inventor: RUSSO VINCENZO
IPC: A61G17/04
Filed: 1995-11-17
Abstract: E' un nuovo cofano mortuario con rivestimento interno costituito da una rete in materiale non deperibile da porre preferibilmente fra la struttura lignea del cofano e gli addobbi in tessuto. Ha dimensioni tali da avvolgere completamente la salma ed ha maniglie, oppure ganci o simili per agevolare l'estrazione dei resti mortali dopo l'esumazione o l'estumulazione.
Patent IT-RM950757-A1 (IT)
Title: Dispositivi elettronici atti ad escludere la possibilita' di  usufruire dei servizi telefonici tramite connessioni fraudolente
Inventor: PIANESE LUIGI
IPC: H04M/
Filed: 1995-11-15
Abstract: Trattasi di dispositivi elettronici da inserire in coppia, in prossimità delle terminazioni di ogni linea della rete di distribuzione dei servizi di Telecomunicazione; i due dispositivi vanno inseriti, per ogni linea telefonica, rispettivamente in prossimità dell'attacco d'utente della centrale di commutazione ed in prossimità della terminazione del cliente. La coppia di dispositivi, tramite lo scambio di combinazioni di segnali DTMF, permette la fruizione dei servizi di telecomunicazione dopo il riconoscimento del cliente abilitato ed effettua la disconnessione della stessa linea dall'attacco d'utente, posto nella centrale di commutazione, in caso di non riconoscimento del cliente stesso. Le combinazioni di segnali DTMF risultano variabili ad ogni richiesta di connessione, essendo scelte, tramite gli appositi algoritmi in essi residenti, tra le circa quattro miliardi di combinazioni disponibili.
Patent IT-TO950257-A1 (IT)
Title: Cilindro maestro in tandem, con tenuta perfezionata
Inventor: MANZO VINCENZO
IPC: B60T11/236
Filed: 1995-04-05
Abstract: Un cilindro maestro in tandem nel quale il pistone secondario (4) presenta una superficie (40) sulla quale scorre un anello (10) interposto tra una prima molla (8) ed una seconda guarnizione (4b), in modo tale che l'anello spinge la seconda guarnizione (4b) contro uno spallamento (41) del pistone secondario (4) per trasmettere alla seconda guarnizione (4b) una forza di compressione che varia con la forza esercitata sulla molla (8) e da essa trasmessa. Secondo l'invenzione, il pistone secondario (4) presenta un arresto (42) che limita lo scorrimento dell'anello (10) verso la seconda guarnizione (4b), e da ciò risulta un miglior scorrimento della seconda guarnizione (4b) nell'alesatura (1a) del cilindro maestro ed una eliminazione praticamente totale di ogni differenza di pressione tra i circuiti primario e secondario del cilindro maestro.
Patent IT-TO960073-A1 (IT)
Title: Macchina lavastoviglie a circuito idraulico migliorato
Inventor: FRAIRIA CARLO
IPC: A47L/
Filed: 1996-02-05
Abstract: Viene descritta una macchina lavastoviglie, comprendente una vasca di lavaggio (1), almeno un cestello (2) atto allo scorrimento in detta vasca (1), un condotto di alimentazione (15) che termina con una presa di alimentazione idraulica (14; 25) su di una parete di detta vasca (1), un organo irroratore (3) portato da detto cestello (2), un elemento tubolare (4, 7) portato da detto cestello (2) ed avente una prima estremità collegata a detto irroratore (3), la seconda estremità essendo destinata ad accoppiarsi in uso con detta presa idraulica; secondo l'invenzione, ad una parete della vasca di lavaggio (1) è fissata una guida (11) estendentesi sostanzialmente tra detta presa idraulica (14; 25) e la parte anteriore di detta vasca (1) e dal fatto che detto elemento tubolare comprende una porzione telescopica (7), la parte superiore della quale è vincolata allo scorrimento in detta guida (11).
Patent IT-VI950098-A1 (IT)
Title: Procedimento di lavorazione per il trattamento di asciugatura o spurgo delle forme di formaggio
Inventor: MAGNABOSCO GIOVANNI
IPC: A23C/
Filed: 1995-06-14
Abstract: Il procedimento prevede asciugatura o spurgo delle forme di formaggio (1) dall'uscita dalla caldaia di caseificazione alla messa in salatura, procedimento che dà la possibilità di ottenere un miglioramento del prodotto sia dal punto di vista dell'omogeneità qualitativa e dimensionale, che di una sensibile riduzione dei tempi di trattamento, con conseguente risparmio economico ed energetico, nonchè di un trattamento del formaggio nel rispetto delle normative igieniche ed antiinfortunistiche europee vigenti.(Fig. 1).
Patent NO-20101155-A1 (NO)
Title: Universalt serveringsbrett med lokk og kuttefunksjon
Inventor: HAGEN OYVIND ALEXANDER
IPC: B26D7/00
Filed: 2010-08-17
Abstract: Universalt serveringsbrett m/lokk og kuttefunksjon muliggjør partering, servering og preservering av mat, type pizza, pai, kake, etc, med en og samme innretning. Ved hjelp av wire [5] benyttes et moment for å gjennomføre parteringen fremfor en trykkraft, dette vil i samarbeid med de buede knivbladene [3] redusere nødvendig anstrengelse betraktelig. Lokket [1], med innvendige demonterbare kniver [3], har innfelte momenthendler [4] i topp som ved hjelp av wireforbindelsen [5] fører lokket [1] mot serveringsbrettet [2], og på den måten utfører parteringen. I serveringsbrettet[2] er det innfelte knivspor [8] tilpasset knivene [3]. Resultatet er en gjennomgående og identisk partering av like store stykker. Ved servering av varm mat vil sirkulasjonsriller [9] i serveringsbrettet [2] redusere fuktdannelsen i kontaktflaten mellom mat og serveringsbrett [2]. For best mulig preservering av mat er serveringsbrettets [2] ytre kant utstyrt med en elastomer tetning [6] som sørger for en lufttett forbindelse mellom lokk [1] og serveringsbrett [2].
Patent NO-20121473-A1 (NO)
Title: System for modellering av geologiske strukturer
Inventor: LEAHY GARRETT
IPC: G01V1/28
Filed: 2012-12-06
Abstract: Den foreliggende oppfinnelsen angår et system for å modellere geologiske strukturer omfattende midler for å motta geofysiske data som representerer de geologiske strukturene og analysemidler for, basert på minst deler av dataene, å beregne en strukturell modell av strukturen, der systemet også omfatter fremvisningsmidler for å frembringe en visuell presentasjon av modellen og grensesnittmidler for å motta inndata fra en bruker, der systemet er tilpasset til å beregne en oppdatert strukturell modell basert på inndataene.
Patent NO-20130718-A1 (NO)
Title: Fremgangsmåte og system for behandling av minst ett stoff til et tørket, fragmentert, virvlet sluttprodukt
Inventor: NORDAHL GEIR
IPC: F26B17/20
Filed: 2013-05-22
Abstract: En fremgangsmåte og et system for å behandle minst ett stoff til et tørket, fragmentert og virvlet sluttprodukt. Det minst ene stoffet leveres i fragmentert tilstand til en virvlings-, tørke og filtrerende enhet (202; 205; 206; 208; 237). Det minst ene fragmenterte stoffet utsettes for en virvlende aksjon fra minst ett sett (205; 206) av roterende skovler (213 - 217; 218 -222) mens det blåses et tørkemiddel, f.eks. varm gass, varmluft, damp eller overhetet damp inn i et stoffvirvlende og tørkende rom (202)i enheten. Tørkemidlet som har passert gjennom de(t) virvlede, fragmenterte stoffet/stoffene suges og filtreres (208) for å la det gå ut av nevnte rom (202) ved en øvre ende eller et sideområde derav. Dessuten bevirkes de(t) fragmenterte, virvlede og tørkede stoffet/stoffene å forlate rommet (202) ved et nedre område av dette som nevnte produkt.
Patent NO-20151545-A1 (NO)
Title: Grip device suitable for medical instruments
Inventor: SUNSDAL ELISABETH
IPC: B25G1/10
Filed: 2015-11-12
Abstract: The present invention is directed to a hand grip device being an open tubular element of elastic material suitable for elongated dental instruments. The instruments comprise an elongated element having a gripping area with a Maximum diameter dgrip, and a head element having a maximum diameter dhead being attached to one of the ends of the elongated element. The tubular element is configured to switch between a rolled up state and a fully unrolled state, and further configured such that the head element may be forced through the inner diameter of the tubular element being in its rolled up state and creating a tight fit around the gripping area while being in its unrolled state.
Patent NO-20181122-A1 (NO)
Title: Treatment of production water from oil fields using chemically assisted recovery
Inventor: REMY PASCAL
IPC: E21B43/16
Filed: 2018-08-27
Abstract: Treatment equipment for production water for a polymer-assisted oil recovery operation comprising at least two nutshell filters in series, where the first filter recovers the majority the oil and the second serves as a finisher.
Patent PE-63299-A1 (PE)
Title: Una dispersion acuosa de un solido particulado que tiene una superficie externa hidrofobica y peliculas producidas por la misma
Inventor: SEKUTOWSKI DENNIS G
IPC: A01N59/00
Filed: 1998-03-04
Abstract: QUE COMPRENDE: A) UN MATERIAL SOLIDO PARTICULADO QUE COMPRENDE UN NUCLEO NO HIDROFOBICO Y UNA SUPERFICIE EXTERNA HIDROFOBICA, EL CUAL POSEE UNA DISTRIBUCION DE TAMANO DE PARTICULA, DONDE HASTA 90% DE LAS PARTICULAS TIENE UNA TAMANO DE PARTICULA INFERIOR A 10 MICRAS, DICHO MATERIAL SE SELECCIONA DE ENTRE: CARBONATO DE CALCIO, MICA, TALCO, CAOLIN, CUARZO, FIBRAS DE CERAMICA, COLORANTE O DIOXIDO DE TITANIO, ENTRE OTROS; B) UNA CANTIDAD DE LIQUIDO ORGANICO DE BAJA EBULLICION SUFICIENTE PARA PERMITIR QUE (A) FORME UNA DISPERSION EN AGUA Y RETENGA LA SUPERFICIE EXTERNA HIDROFOBICA EN EL SECADO, DICHO LIQUIDO ORGANICO SE SELECCIONA DE ENTRE: ALCOHOLES, CETONAS, ETERES CICLICOS Y MEZCLAS DE LOS MISMOS; Y C) AGUA. METODO PARA FORMAR UNA PELICULA CONTINUA HIDROFOBICA SOBRE UN SUSTRATO QUE COMPRENDE: I) ANADIR (A) A (B) PARA FORMAR UNA MEZCLA PASTOSA; II) ANADIR DICHA MEZCLA PASTOSA AL AGUA PARA FORMAR UNA DISPERSION ACUOSA DE DICHO MATERIAL SOLIDO PARTICULADO; III) APLICAR DICHA DISPERSION ACUOSA AL SUSTRATO; Y IV) PERMITIR QUE LA DISPERSION ACUOSA SEQUE, CON LO CUAL UNA PELICULA CONTINUA HIDROFOBICA DE EL MATERIAL SOLIDO PARTICULADO SE FORMA SOBRE EL SUSTRATO, PUDIENDO SER DICHO SUSTRATO UNA COSECHA AGRICOLA, ARBOLES, PLANTAS, MADERA, CONCRETO, SUELO, TEXTILES Y PRODUCTOS QUIMICOS ORGANICOS SOLIDOS
Patent PE-37898-A1 (PE)
Title: Conector para sistema de iniciacion de voladura
Inventor: DANIEL P SUTULA
IPC: F42B3/10
Filed: 1996-12-26
Abstract: QUE COMPRENDE:A) UNA PORCION DE CUERPO CON UN MEDIO DE RETENCION DE LA TAPA QUE TIENE UNA PORCION DE CERRAMIENTO CON UNA PERFORACION PARA ALOJAR Y ENCERRAR EL EXTREMO DE SALIDA DE LA TAPA DE DETONADOR; B) UN MEDIO DE RETENCION DE LINEA DONANTE, AGREGADO A LA PORCION DE CUERPO PARA LA RETENCION DE LA LINEA, EN EL EXTREMO DE ENTRADA DE LA PORCION DE CUERPO EN RELACION CON LA TRANSMISION DE SENAL Y EL MUNON DE ENTRADA; C) UNA TAPA DE DETONADOR DE RETARDO QUE DISPONE DE UN EXTREMO DE ENTRADA DESDE EL CUAL SALE EL MUNON DE ENTRADA, ESTANDO UN EXTREMO DE SALIDA RETENIDO DENTRO DEL MEDIO DE RETENCION DE LA TAPA CON EL EXTREMO DE SALIDA DE LA TAPA DEL DETONADOR DE PERFORACION, DICHO MUNON DE ENTRADA ESTA COLOCADO HACIA EL EXTREMO DE ENTRADA DEL DISPOSITIVO Y CERCA DEL MEDIO DE RETENCION DE LA LINEA DONANTE, COMPRENDIENDO ESTE UNA LONGITUD DE LINEA DE TRANSMISION DE SENAL; D) UN MEDIO DE RETENCION DE LINEA DE SALIDA SOBRE EL DISPOSITIVO CONECTOR PARA RETENER UNA LINEA DE SALIDA EN RELACION DE TRANSFERENCIA DE SENAL CON EL EXTREMO DE SALIDA DE LA TAPA DEL DETONADOR; Y E) UN MEDIO DE YUNQUE PARA COLOCAR EL MUNON DE ENTRADA QUE COMPRENDE UNA LINEA DE TRANSMISION DE SENAL DE UNA LONGITUD LIMITADA A CONECTAR SOLAMENTE LA LINEA DONANTE Y LA TAPA DEL DETONADOR Y EN COMUNICACION DE TRANSFERENCIA DE SENAL
Patent PE-133199-A1 (PE)
Inventor: BARBERO VILLASECA JESUS
IPC: H04J3/14
Filed: 1998-11-23
Abstract: Radio systems control device. Radio systems control device, which consists of one or more stations connected by a local-area network forming a Control Centre 2 which operates under the UNIX operating system, featuring processors 3 and graphics terminals 4 which are configured so that the processor 3 can be used as a graphics terminal 4, having local Control Centres 20 connected to the Control Centre 2 by means of a local- area network or else by means of a dedicated X.25 link constituting remote Control Centres 30, the Control Centres 20 or 30 featuring a processor 3, terminal 4 and, in the same way as the Control Centre 2, having alarm panels, acoustic warning devices 5, printers 22 and tape units 8. <IMAGE>
Patent PE-1997-A1 (PE)
Title: Lamina de polilactida que excreta acido lactico, para utilizarse en articulos absorbentes
Inventor: LAGERSTROM ERIK
IPC: A61F13/20
Filed: 1995-12-11
Abstract: QUE COMPRENDE: A) DE UNA CAPA SUPERFICIAL QUE CONSISTE PRINCIPALMENTE EN UN POLIESTER BASADO EN UN ACIDO LACTICO QUE EXCRETA ACIDO LACTICO Y/O DERIVADO ACIDO FISIOLOGICAMENTE ACEPTABLE DEL MISMO, CUANDO LA CAPA SUPERFICIAL ES SUMERGIDA EN UN VOLUMEN DE AGUA, EN EL QUE LA RELACION EN PESO ES DE 1:100, EN UNA CANTIDAD TAL QUE EL ACIDO LACTICO Y/O EL DERIVADO QUE SE EXCRETA EN UN TIEMPO DE A LO SUMO 20 HORAS, CONFERIDA AL VOLUMEN DE AGUA UN PH DE A LO SUMO 3,0, CARACTERIZADO PORQUE ANTES DE SER SUMERGIDA EN EL VOLUMEN DE AGUA, LA CAPA SUPERFICIAL TIENE UNA CONCENTRACION DE MONOMERO Y/U OLIGOMERO(S) QUE ES ESENCIALMENTE MAYOR QUE LA CONCENTRACION EN EQUILIBRIO DE MONOMERO Y/U OLIGOMERO(S) CORRESPONDIENTE A LA CANTIDAD DE POLIESTER QUE ESTA PRESENTE, SIENDO LA CONCENTRACION DE MONOMERO Y/U OLIGOMERO(S) DE 10-25% EN PESO CALCULADO CON RELACION AL POLIESTER. TENIENDO ESTE POLIESTER UNA MASA MOLECULAR MEDIA NUMERICA(Mn) MAYOR O IGUAL A 40,000
Patent PL-228752-A1 (PL)
IPC: B01J49/00
Filed: 1980-12-23
Abstract: A process is disclosed for the regeneration of a sorbent, particularly an ion exchanger used in the recovery, isolation or production of sugars, wherein a regeneration solution is used which contains at least 20 meq/l of an alkali metal hydroxide or hydroxide of an alkaline earth metal having an atomic number of at least 20, and at least 1% by weight of a monosaccharide or disaccharide.
Patent PL-253986-A1 (PL)
Title: Screw-type lead mechanism with hand-operated electric or other control
IPC: B60N2/06
Filed: 1985-06-14
Abstract: The slide comprises two fixed lower sections and two upper sections. A gear-down mechanism is rigidly connected to one of the upper sections, the fixed lower section having an inner face provided with a toothing forming a rack. Reversible endless screws are mounted on a shaft able to rotate freely with respect to the rack and are blocked in the position chosen for the seat by shoes with inclined upper sections normally pressed against each other by springs an unlocked by flat portions of a bar having a controlled rotation. The seat is manually displaced.
Patent PL-286371-A1 (PL)
Title: Method of removing nitrogen compounds from liquids and apparatus therefor
Inventor: VAN VELZEN DANIEL
IPC: C02F1/76
Filed: 1990-08-06
Abstract: The invention concerns a device and a method for removing nitrogen compounds from an aqueous liquid containing nitrogen oxides (NOx) and/or nitrates (NO-_3). It comprises an electro-chemical cell (10) with a cathode and an anode and a current source applied thereto. According to the invention, the cell is divided by a cation selective membrane into a cathode compartment (2) to be filled with said liquid, and an anode compartment (3) to be filled with an anolyte containing an aqueous solution of an alkali or hydrogen halide such as sodium bromide or sodium chloride, and the membrane (1) is constituted by a microporous fabric of PTFE.
Patent PL-296078-A1 (PL)
Title: Method of obtaining crystalline diethanol 4'-phosphate ethoposide solvate
Inventor: FAVREAU DENIS
IPC: C07H15/24
Filed: 1992-09-29
Abstract: The present invention provides temperature stable crystalline etoposide 4'-phosphate diethanol solvate, and a process for its preparation.
Patent PL-298861-A1 (PL)
Title: Method of separating poliethylene (pe) and polypropylene (pp)
Inventor: KLEINE-KLEFFMANN ULRICH
IPC: B29B13/06
Filed: 1992-07-04
Abstract: PCT No. PCT/EP92/01614 Sec. 371 Date Apr. 9, 1993 Sec. 102(e) Date Apr. 9, 1993 PCT Filed Jul. 4, 1992 PCT Pub. No. WO93/03852 PCT Pub. Date Mar. 4, 1993.Plastic mixtures, in particular those of a similar density such as polyethylene and polypropylene, are separated electrostatically, whereby prior to charging, the mixture is subjected to a surface treatment.
Patent PL-302142-A1 (PL)
Title: Box, in particular that for holding a detergent in the form of powder or flakes
Inventor: BERVEGLIERI FABRIZIO
IPC: B65D5/16
Filed: 1994-02-04
Abstract: Box for detergent in powder or flake form comprising a cardboard cut-out container body (2) and a plastic closure piece (3) consisting of a frame (31) and a lid (32) hinged to said frame. The peripheral dimensions of this frame are approximately equal to those of said container body, and the frame is attached to the container body (2) by a lower portion (310), the perimeter of which is smaller, this portion (310) being inserted inside the container body. The lid (32) also has a cavity (33) in which devices (4) for measuring out and/or dispensing the detergent in powder or flake form may be housed. <IMAGE>
Patent PL-302677-A1 (PL)
Title: Apparatus for burning combustible materials of plant origin in particular straw
Inventor: HARVEY ADRIAN MARK
IPC: A01M15/00
Filed: 1993-07-01
Abstract: PCT No. PCT/GB93/01414 Sec. 371 Date Feb. 28, 1994 Sec. 102(e) Date Feb. 28, 1994 PCT Filed Jul. 1, 1993 PCT Pub. No. WO94/01723 PCT Pub. Date Jan. 20, 1994There is described a burner for vegetable matter such as straw or the like, comprising a combustion chamber (9) having an upstream and a downstream end, a blower (6) discharging air and cut vegetable matter into the upstream end of the combustion chamber, an igniter (10) positioned at the upstream end of the combustion chamber, and a number of screens (14, 15, 16) extending across the combustion chamber and spaced from each other in the flow direction, the mesh size of the screens decreasing in the flow direction. The burner is used, inter alia, in a soil steriliser and stubble burner which comprises a chassis, a pick-up device (1) to collect a swath of vegetable-matter from the ground, a feed device (2, 3, 4) to feed the vegetable matter to a chopper (5) and a blower to transport the vegetable matter to the upstream end of the combustion chamber of the burner, the combustion gases from the burner being directed via a discharge device (11) onto the surface of the ground.
Patent PL-307081-A1 (PL)
Title: Mason's scaffold trestle
Inventor: MUELLER WILHELM
IPC: E04G1/22
Filed: 1995-02-03
Abstract: A horizontal upper supporting beam is provided for accommodation of the load. As height adjustment device, a crank is used and gear means are provided for transmission of the rotary movement of the crank in an up and down movement of the upper part of the scaffolding support.   The gear means comprise a drive wheel connected with the crank (19), which meshes with a horizontal pinion arranged at right-angles to the drive wheel. The pinion is firmly connected with a casing with an inner thread. This inner thread engages in a self-blocking outer thread of a vertical spindle (17) positioned through the casing. The spindle at its upper end supports the height adjustment horizontal beam (16) of the upper part (15) of the scaffolding support.
Patent PL-308205-A1 (PL)
Title: Container comstituting simultaneously protective shield for a plant
Inventor: ZAK JOHN SR
IPC: A01G13/04
Filed: 1993-09-29
Abstract: PCT No. PCT/CA93/00391 Sec. 371 Date May 1, 1995 Sec. 102(e) Date May 1, 1995 PCT Filed Sep. 29, 1993 PCT Pub. No. WO94/07768 PCT Pub. Date Apr. 14, 1994A container (10) for storing of transporting pourable material can be converted to a plant protection device by removing a portion of the base (11) of the container to allow the peripheral wall (12) of the container to be engaged over the plant thus surrounding the plant (32). The peripheral wall is formed from a double layer with annular space (15) therebetween for receiving liquid such as water to maintain heat.
Patent PL-321901-A1 (PL)
Title: Bioactive compound coupled to a carbohydrate
Inventor: MILJKOVIC DUSAN
IPC: C07H1/00
Filed: 1996-12-12
Abstract: Methods and compositions are provided which increase the cellular uptake of bioactive materials by covalently bonding such compounds to carbohydrate moieties through chemical linkers using other than glycosidic bonds. Numerous carbohydrates, linkers and bioactive materials can be joined in this way to form novel compositions, which are collectively referred to herein as glinkosides. Preferred glinkosides are preferentially taken up by glucose receptor and/or other cellular receptors, and once inside the cells, the glinkosides are cleaved into a sugar, a linker or linker fragments, and a biologically active compound. Various aspects of the invention include processes for synthesizing glinkosides, glinkoside compositions, and methods of treating diseases using glinkosides.
Patent PL-322063-A1 (PL)
Title: Three-dimensional framework
Inventor: TAYLOR HAROLD S
IPC: A61B17/60
Filed: 1996-02-16
Abstract: A spatial frame for positioning a first element or the like relative to a second element or the like. The spatial frame includes a first base for mounting to the first element; a second base for mounting to the second element; a plurality of adjustable effective length struts; connector structure for rotatably attaching the first ends of a first pair of struts relative to one another and relative to the first base; connector structure for rotatably attaching the first ends of a second pair of struts relative to one another and relative to the first base; connector structure for rotatably attaching the first ends of a third pair of struts relative to one another and relative to the first base; connector structure for rotatably attaching the second ends of the first pair of struts relative to one another and relative to the second base; connector structure for rotatably attaching the second ends of the second pair of struts relative to one another and relative to the second base member; and connector structure for rotatably attaching the second ends of the third pair of struts relative to one another and relative to the second base member.