baber/WOPTO huggingface dataset:
Patent FR-2617468-B1 (FR)
Inventor: JENNET MICHEL
IPC: B65H29/24
Filed: 1987-06-30
Granted: 1989-12-15
Abstract: Sheets are stacked flat. The machine for implementing the invention comprises: a horizontal work surface (5) delimiting a laying template which defines a transverse median axis (7); a superposed delivery plane (10) for conveying individual sheets (1) bearing stripes of glue (2); a pair of parallel horizontal axis suction cylinders (13, 14) located between the work surface and the delivery plane, and disposed on either side of a vertical median plane (P-P'); means (15) for counting the stripes of glue on each sheet to locate the middle stripe thereon; and p0 means (16) for localized gluing of the middle stripe of the sheet to be laid. Applicable to structures having alternating stripes of glue.
Patent FR-2625815-B1 (FR)
Inventor: ROY GUY LE
IPC: H04Q3/52
Filed: 1988-01-08
Granted: 1990-05-04
Abstract: The diffuser is made from N=2n light ducts divided into two sets of 1/2N ducts, with every other duct belonging to a different one of the sets. The two sets of ducts are helically wound in opposite directions but at the same helical pitch over a cylinder (1). Each duct in either set crosses over the 1/2N ducts in the other set, and couplers are provided at those cross-overs between any given duct and the 1/2N ducts of the other set having cross-over numbers 2q, where q=0, 1, 2, . . . , (n-1). The diffuser has stages each comprising 1/2N couplers, with each stage being disposed in a ring around the cylinder.
Patent FR-2625971-B1 (FR)
Inventor: BIGAND FRANCOIS MAURICE
IPC: B65D75/54
Filed: 1988-01-14
Granted: 1990-05-25
Abstract: The machine of this invention essentially comprises conveyors (1) for transporting objects (2) to be packaged, two systems (3, 7) for feeding film located, respectively, on each side of the plane of the conveyors (1) and delivering two opaque films (4, 8), between which the object (2) to be packaged is placed, means (11, 12) for welding and cutting the films, a system (14) for feeding a third transparent film (15) fixed to the opaque film (4) and defining therewith a space capable of containing a document (D) delivered by conveyors (20) and a chute (21) arranged between the film-feed systems (3, 14).
Patent FR-2628101-B1 (FR)
Inventor: COSTANTINI MICHEL
IPC: C07C29/48
Filed: 1988-03-03
Granted: 1990-07-20
Abstract: Oxidation of alkanes with organic hydroperoxides in a mixture of alcohols and ketones in the presence of osmium or of an osmium compound.
Patent FR-2649505-B1 (FR)
Inventor: NICOLAI JEAN
IPC: G06F1/08
Filed: 1989-07-07
Granted: 1991-10-25
Abstract: The disclosure concerns the fabrication of integrated circuits. To enable the making, in an integrated circuit, of an internal clock, the frequency of which is adjustable and does not depend on the general supply voltage Vcc of the circuit, a relaxation oscillator is used. This relaxation oscillator is built in the following way: weighted individual current sources may be selectively connected in parallel under the control of a register containing frequency adjusting data. These sources charge and discharge a capacitor. A threshold comparator determines a high threshold Vh and a low threshold Vb to trigger respectively the discharging and the charging of the capacitor. The difference Vh-Vb is made proportional to the currents of the elementary sources. Thus, even if the value of the currents varies as a function of the supply voltage, the thresholds vary at the same time and the period of the oscillator does not vary.
Patent FR-2651437-B1 (FR)
Inventor: BURNOUF MIRYANA-NEE-RATOSEVICH
IPC: C07K14/755
Filed: 1989-09-05
Granted: 1994-08-19
Abstract: The invention relates to a process for the preparation of a concentrate of factor VIII-von Willebrand factor complex having high specific activity from whole plasma (not cryoprecipitate). The process comprises a prepurification by a double treatment with barium chloride and aluminium hydroxide. The process then comprises a purification by chromatography on an anion exchange resin of the DEAE-Fractogel type. The process comprises a step of viral inactivation by a solvent/detergent treatment. The process also enables fibrinogen, albumin, immunoglobulins, antithrombin III, fibronectin and prothrombin complex to be recovered from the same plasma. The various concentrates obtained by the process of the invention are intended, in particular, for therapeutic use.
Patent FR-2655794-B1 (FR)
Inventor: BALZANO JEAN-MICHEL
IPC: H04J3/16
Filed: 1989-12-13
Granted: 1994-12-16
Abstract: The converter comprises a memory (SRAM) having first and second ports, a first port management circuit (SPM) connected to the first port, to an incoming synchronous multiplex line (ME) and to an outgoing synchronous multiples line (MS), and a second port management circuit (APM) connected to the second port, to an incoming asynchronous link (LE) via an FIFO type packet memory (M) and to an outgoing asynchronous link (LS). An external command (MF) applied to the port management circuits selects the converter operating mode; in a first mode (M32) each time slot of a frame of a synchronous multiplexed signal is assigned to one communication channel and in a second mode (M1) all the time slots of a synchronous frame are assigned to one channel.
Patent FR-2665260-B1 (FR)
Inventor: ALEXANDRE JACQUES LOUIS EUGENE
IPC: G01N23/222
Filed: 1990-07-25
Granted: 1994-12-23
Abstract: Installation for determining by pulsed neutronic irradiation the contents of the various constituents in a bulk material. Use is made of a measuring apparatus (1) including electronic irradiation source and the gamma radiation measuring region, means (2) which provide for the continuous circulation of said bulk material, means (6) for receiving data of resulting spectra and computing means (7) allowing to compare said data of the spectrum with the data resulting from the measurements carried out in similar conditions on each of the pure constituents whose presence is searched (4), as well as means (8) for reading the result of the averaged computation.
Patent FR-2668063-B1 (FR)
Inventor: FABRE PIERRE
IPC: A61K35/08
Filed: 1990-10-17
Granted: 1994-12-16
Abstract: PCT No. PCT/FR91/00805 Sec. 371 Date Jun. 4, 1993 Sec. 102(e) Date Jun. 4, 1993 PCT Filed Oct. 16, 1991 PCT Pub. No. WO92/06666 PCT Pub. Date Apr. 30, 1992.The present invention relates to compositions based on thermal water containing liposomes of thermal water stabilized in a deoxyribonucleic acid (DNA) gel and a process for preparing thereof. The composition is useful in dermatology and cosmetology.
Patent FR-2707085-B1 (FR)
Inventor: MURIEL DUFLOS
IPC: A61P29/00
Filed: 1993-06-30
Granted: 1995-08-18
Abstract: Compounds of general formula: in which m, X, Y, A, R2 and R3 are defined in the description. Medicaments.
Patent FR-2714685-B1 (FR)
Inventor: MARTINET PASCAL
IPC: A01N25/34
Filed: 1994-01-05
Granted: 1996-08-02
Abstract: PCT No. PCT/FR94/01541 Sec. 371 Date Aug. 5, 1996 Sec. 102(e) Date Aug. 5, 1996 PCT Filed Dec. 28, 1994 PCT Pub. No. WO95/18532 PCT Pub. Date Jul. 13, 1995A method protecting building structures against termites comprising over the entire erection surface exposed by digging erection of the structure a non-porous film of plastic material impregnated throughout the film with a low concentration of an insecticide whereby the insecticide slowly diffuses.
Patent FR-2727338-B1 (FR)
IPC: B22D11/06
Filed: 1994-11-30
Granted: 1997-02-14
Abstract: Appts. for continuous casting includes two counter-rotating cylinders (1,2) defining a casting space (5) between them, and a hood (4) which is placed above the casting space and incorporates two longitudinal walls (41). The walls, extending along the respective cylinder surfaces, are provided with gas conduits (45,46) with outlets directed towards these surfaces. Each wall (41) has a sealing means (50) which have the effect that the flow of gas delivered by the conduit (45) is directed towards the extent of the hood (4), while the flow of gas from the conduit (46) is directed towards the casting space (5).
Patent FR-2744003-B1 (FR)
Inventor: SEQUENOT GERARD
IPC: A47J31/06
Filed: 1996-01-25
Granted: 1999-05-28
Abstract: PCT No. PCT/FR97/00128 Sec. 371 Date Feb. 5, 1999 Sec. 102(e) Date Feb. 5, 1999 PCT Filed Jan. 23, 1997 PCT Pub. No. WO97/26816 PCT Pub. Date Jul. 31, 1997A filter holder including a scoop (1) provided with a handle (2) and designed to hold a filter (3) that consists of a housing (4) and a perforated bottom wall (5) and is movably mounted in the space defined by the housing (4) via a height adjustment device (6). This device (6) includes a stack consisting of at least one ring (8) adjacent to the bottom wall (5) and an opposed ring (9) coaxial with the ring. The respective side surfaces (10-11) of the rings include an alternated series of staggered angled (12) and horizontal (13B-13H) surfaces, and an alternated series of staggered opposed angled (14) and opposed horizontal (15B-15H) surfaces, as well as an actuating member (16) movably mounted on the cup (1) for causing relative movement of the ring (8) and the opposite ring (9).
Patent FR-2763361-B1 (FR)
Inventor: ROBERT ALAIN
IPC: F02N19/10
Filed: 1997-05-15
Granted: 1999-08-20
Abstract: The invention concerns a self-contained unit (6) for internal combustion motor vehicles consisting of two substantially identical half-units (7,8) mounted in opposite directions along a common axis, and assembled sealed one against the other. Each half-unit (7, 8) comprises a hollow part (11, 12) constituting a sleeve for connection with the engine cooling circuit. Heater plugs (24, 25, 26, 27) are fitted in the bores so as to be in contact with the cooling liquid circulating in the unit (6). Said plugs can be four in number in staggered arrangement . The unit (6) also comprises bosses (31, 32) for its being fixed.
Patent FR-2770790-B1 (FR)
Inventor: HEDOUIN CATHERINE
IPC: B01J23/34
Filed: 1997-11-10
Granted: 1999-12-10
Abstract: A composition is disclosed for reducing nitrogen oxide emissions from gases which comprises a support based on a cerium oxide, a zirconium oxide and an oxide of scandium or a rare earth other than cerium, and a supported phase based on manganese and at least one other element which is an alkali metal, alkaline-earth metal or a rare earth.
Patent WO-9909194-B1 (WO)
Title: Adenovirus aviaire celo recombinant et son utilisation comme vecteur vaccinant
Inventor: LANGLOIS PATRICK
IPC: A61K39/00
Filed: 1998-08-13
Abstract: L'invention concerne des méthodes de préparation d'adénovirus aviaires CELO recombinants et leurs utilisations à titre de vecteur d'expression de protéines hétérologues pour la préparation de vaccins, notamment pour la protection d'espèces aviaires contre les maladies infectieuses communes, ou à titre de vecteur d'expression de protéines hétérologues impliquées dans le métabolisme.
Patent FR-2780482-B1 (FR)
Inventor: DUPOIRON FRANCOIS
IPC: F16L11/16
Filed: 1998-06-30
Granted: 2000-07-21
Abstract: Method of manufacturing a metal carcass for flexible pipe or umbilical comprising shaping a band of metal strip and then helically winding it to form the metal carcass which, in cardioid mode, has a given collapse strength, wherein the metal strip is work-hardened prior to shaping to give it at least a 15% higher elongation at rupture, and in that the said metal carcass which is made from the said work-hardened metal strip has, in cardioid mode, a collapse strength which is at least 15% higher than the given collapse strength.
Patent FR-2785798-B1 (FR)
Inventor: CAUWET MARTIN DANIELE
IPC: A61K8/891
Filed: 1998-11-12
Granted: 2002-11-29
Abstract: The invention concerns novel cosmetic compositions comprising in a cosmetically acceptable medium at least an anionic surfactant such as a carboxylic alkylpolyglycoside ester and at least a water insoluble silicone with viscosity higher than 5.10<-5> m<2>/s. The keratinous materials treated with said compositions have improved cosmetic properties, in particular for combing out hair.
Patent FR-2787016-B1 (FR)
Inventor: GAUCHET FABIEN
IPC: A61F2/44
Filed: 1998-12-11
Granted: 2001-03-02
Abstract: An intervertebral disc prosthesis comprising two plates and a cushion interposed between the plates is contemplated. The cushion includes a compressible body having two ends in contact with the plates. At least one of the ends is freely displaceable relative to the plate in a parallel direction. Thus, the prosthesis imitates and approximates the mechanical properties of a healthy natural intervertebral disc.
Patent FR-2794081-B1 (FR)
Inventor: HUBSCHEN JOSEPH
IPC: B60P1/00
Filed: 1999-05-26
Granted: 2001-06-29
Abstract: The trolley for unloading goods from the lift platform (2) of a commercial vehicle has rollers or slides (3A, 3B) attached t its front edge (1A) Stops(5) on the back of these cooperate with a second set of stops (6) on the lift to prevent the trolley from sliding back. A frame (4) at the other end carries retractable wheels which rest on the ground to support the trolley.
Patent HR-P940174-B1 (HR)
Title: A chemical process for a synthesis of an antibacterial agent with an intermediate
Inventor: TUGHAN GARFIELD CECIL
IPC: C07D477/00
Filed: 1994-03-17
Abstract: A process for the preparation of antibacterial compound (I) or a salt thereof which comprises hydrogenolysis of the novel compound of formula (II) and if necessary or desired isolating the resultant carboxylic acid as a salt thereof.
Patent HU-225646-B1 (HU)
Title: Hvegf receptors as vascular endothelial cell growth factor antagonists
Inventor: FERRARA NAPOLEONE
IPC: C07K14/71
Filed: 1992-10-28
Abstract: (A) A compsn. is claimed comprising a human vascular endothelial growth factor (hVEGF) antagonist, provided however that the antagonist is not the flt or flk-1 or KOR receptor or a neutralising anti-hVEGF antibody. Also claimed are: (B) a monoclonal antibody (MAb) amino acid sequence capable of specifically binding to a HVEGF receptor (hVEGFr) or a hVEGF-hVEGFr; (C) a polypeptide comprising an amino acid sequence comprising a bVEGFr and an immunoglobulin chain; (D) a method of treatment of a tumour in a mammal comprising administering a HVEGF antagonist to reduce the size of the tumour.
Patent HU-222033-B1 (HU)
Inventor: GREENWOOD CHRISTOPHER JOHN
IPC: F16H47/04
Filed: 1999-05-07
Abstract: A találmány tárgya hidraulikus szabályozási kör folytonosanváltoztatható sebességváltóhoz. A találmány szerinti hid- raulikusszabályozási kör tartalmaz egy első hidraulikus nyomásszabályozószelepet (V1) a variátor görgővezérlő fődugattyúit (52) táplálóhidraulikafolyadék nyomásának szabályozására, valamint egy másodikhidraulikus nyomásszabályozó szelepet (V2) a sebességváltótengelykapcsolóit (CL, CR) tápláló hidraulikafolyadék nyomásánakszabályozására. A szelep (V1) és a szelep (V2) sorba van kötve, és egyszelepelrendezés (V3)[első folyadékirányító szelepegység (S1, S2)] azáramlást két szivattyútól (PL, PR) az áramlási irányban a szelep (V1)előtt lévő első pontra (P1), vagy áramlási irányban a szelep (V1)után, de szelep (V2) előtt lévő második pontra (P2) irányítja. Ez azelrendezés lehetővé teszi a tengelykapcsolók (CL, CR) olyanszabályozását, amely nem befolyásolja a görgők helyzetét, és fordítva. ŕ
Patent HU-221924-B1 (HU)
Title: Glued sleeve coupling for pipelines and glued sleeve for such coupling
Inventor: GUITONEAU HANS EDWARD
IPC: F16L47/02
Filed: 1998-03-03
Abstract: A glue sleeve coupling for a pipeline comprises a glue sleeve (3) as well as a pipeline end (2) contained in the glue sleeve, in which glue sleeve and pipeline end together describe at least one ring-shaped chamber (4) which is circumscribed by at least two constricted parts pointing inwardly, positioned in axial direction at a distance from each other. The ring-shaped chamber is filled with a gluing agent through a filler opening (5) in the wall of the glue sleeve. The glue sleeve and the pipeline end together describe at least a second ring-shaped chamber adjacent to the first chamber, in such a way that when the first chamber is filled through the filler opening, the glue collecting in the first chamber and the excess glue, if any, can flow from the first chamber into the second chamber.
Patent JP-3072087-B1 (JP)
Title: 車両の床構造
IPC: B61F1/08
Filed: 1999-02-09
Granted: 2000-07-31
Abstract: 【要約】
【課題】  車両の各種制御に用いる制御流体のための配 管を簡単にした車両の床構造を提供する。
【解決手段】  鉄又はステンレス製の車両の構体の下部 を構成する台枠１は、プレート部材３を備える。プレー ト部材３は、車両の前後方向に延びる凹溝部３ａと凸部 ３ｂとが交互に形成されてなる断面波形形状である。プ レート部材３の凹溝部３ａ内に、車両の各種制御に用い る制御エアのためのメインパイプ４を設ける。メインパ イプ４は、水平方向の長軸を有する断面楕円筒形状で、 上面部４ａを溶接によりプレート部材３に固設する一 方、下面部４ｂに設けた一又は複数の連通穴４ｃに、ネ ジ部６ａを有するネジ継ぎ手６を溶接により固設する。 ネジ継ぎ手６のネジ部６ａは、車両の各種制御に用いる 制御流体のためのサブパイプ５が接続可能である。
Patent JP-3073487-B1 (JP)
Title: 隅瓦焼成用保持台
IPC: C04B33/32
Filed: 1999-02-16
Granted: 2000-08-07
Abstract: 【要約】
【課題】  １種類の焼成用保持台で寄せ棟屋根の勾配に 対応することができるうえに、ランニングコストを低減 できる隅瓦焼成用保持台を提供する。
【解決手段】  基板１に、隅瓦の中央屈曲部下面を支持 する受部材３と隅瓦の前縁両側下面を支持する受部材３ と隅瓦の後縁両側下面を支持する受部材３とを着脱自在 に取り付ける。
Patent JP-2998958-B1 (JP)
Title: 架橋アクリル系吸湿繊維及びその製造方法
IPC: D06M101/00
Filed: 1999-03-18
Granted: 2000-01-17
Abstract: 【要約】
【課題】  架橋処理及び加水分解処理のための薬液（ヒ ドラジンと炭酸ナトリウム等）量を減少させ、処理時間 の短縮ができ、充分な吸湿・放湿性能を有する架橋アク リル系吸湿繊維を得ることができる製造方法及び架橋ア クリル系吸湿繊維を提供する。
【解決手段】  アクリル繊維を架橋処理及び加水分解処 理して架橋アクリル系吸湿繊維を製造する際に、コモノ マー成分として酸性基を有するコモノマーを１〜５重量 ％含有する重合体からなるアクリル繊維を被処理原料繊 維として使用する。
Patent NL-1041324-B1 (NL)
Title: Potgrond-beschermer.
Inventor: CORNELIS DE KRIJGER
IPC: A01G13/02
Filed: 2015-05-28
Granted: 2017-01-06
Abstract: Een potgrond-beschermer is een kunststof plaat, van ongeveer één millimeter dikte, dat de potgrond in een plantenpot afschermt voor aanraking van buitenaf, maar voldoende mogelijkheden biedt voor ademen van de potgrond en het toedienen van water. De potgrond-beschermer wordt om de stam van de plant, in de plantenpot geplaatst, waarbij de beide, naar elkaar bewegende open zijdes van de potgrond-beschermer worden verbonden door een haaksysteem. Door de vorm van de uitsparing in het materiaal van de potgrond-beschermer, zal de potgrond-beschermer, wanneer deze door het haaksysteem is gefixeerd, van conische vorm zijn. Door deze conische vorm zal er altijd een ruimte blijven tussen de bovenzijde van de potgrond-beschermer en de potgrond, dit om de aanraking van de potgrond-beschermer met potgrond, waardoor schimmelvorming kan ontstaan, te minimaliseren. Om de ventilatie van de potgrond verder te garanderen en toegang te geven tot de potgrond voor het toedienen van water, zijn er, afhankelijk van het formaat, diverse uitsparingen gemaakt in de potgrond-beschermer. Aan zowel de binnen- als de buitenzijde van de potgrond-beschermer zijn in het kunsstofmateriaal diverse ingekerfde lijnen opgenomen, om zo de potgrond-beschermer -zonder daarbij gereedschap nodig te hebben- op maat te kunnen maken voor zowel de aansluiting met de plantenpot als de stam van de plant.
Patent NL-1042620-B1 (NL)
Title: Windturbine
Inventor: TANCEL KÖMCÜ
IPC: F03D1/06
Filed: 2017-11-02
Granted: 2019-05-13
Abstract: De vinding (horizontale as windturbine) is bedoelt om wind om te zetten in een draaiende beweging. De draaiende beweging kan desgewenst door middel van een generator of dynamo omgezet worden in elektrische stroom, op mechanische wijze een machine aandrijven, of op andere wijze worden aangewend. De vinding is een windturbine waarvan de as horizontaal geplaatst is, zodanig dat deze as in de lengterichting van de wind staat. De rotorbladen (wieken) zijn echter zodanig op hun rotor of as gemonteerd, dat ze niet haaks, of onder een bepaalde hoek op de windrichting staan, met als gevolg dat de wind de rotorbladeren in een cirkelvormige beweging wegduwt, maar parallel met de windrichting mee staan, waardoor de wind de rotorbladen, die zodanig zijn ontworpen dat ze grotendeels een vliegtuigvleugel­ achtige dwarsdoorsnede-vorm hebben, d.m.v. liftkracht in een cirkelvormige beweging doet ronddraaien. Alle rotorbladen dienen zodanig op de rotor of as gemonteerd te zijn, dat de rotorbladen de liftkracht, die loodrecht op de windrichting staat, in dezelfde richting omzet naar de draaibeweging van de windturbine. Doordat de rotorbladen een vliegtuigvleugel-achtige vorm hebben, die in zijn simpelste vorm een bolle en een vlakke of holle kant heeft, draait de rotor of as van de turbine altijd in dezelfde richting ongeacht of de wind van voren of van achteren komt, zolang de as maar in de lengterichting van de wind staat. De vinding zou ook in een stromende vloeistof kunnen functioneren.
Patent NL-1043799-B1 (NL)
Title: Verpakkingsdoosconfiguratie voor het door middel van een basisdoos beschermend verpakken van potplanten in opstaande of liggende positie van die basisdoos
Inventor: STEEF VAN SCHIE
IPC: B65D85/52
Filed: 2020-09-30
Granted: 2022-06-01
Abstract: Verpakkingsdoosconfiguratie voor het verpakken van potplanten, omvattende een ba- sisdoos (1) met een vaste wand (2), vier zijwanden (3) en een door een deksel of deur afsluitbare open zijde (4). De basisdoos is ingericht om ofwel opstaand gebruikt te kunnen worden ("kastmodus"), waarbij een van de zijwanden (3a) dan als onderwand dient en de vaste wand (2) als achterwand, ofwel liggend ("kistmodus"), waarbij de vaste wand (2) dan als bodemwand dient. Daartoe omvat de basisdoos twee tegenover elkaar staande zijwanden (3b) die voorzien zijn van indrukbare vouwlippen (5), De ba- sisdoos kan opstaand worden gebruikt, gebruikmakend van een eerste draagplateau (7) en steunplateau (8) die aangrijpen op de vouwlippen (5) van de basisdoos. De ba- sisdoos kan ook Iiggend worden gebruikt, gebruikmakend van een tweede draagpla- teau (10) en steunplateau (11). (FIG. 1)
Patent NL-2015037-B1 (NL)
Title: Digital iris for camera lens assembly.
Inventor: REINDER GERRIT AARTSEN
IPC: H04N5/32
Filed: 2015-06-26
Granted: 2017-01-24
Abstract: An imaging apparatus for an image intensifier (11) X-ray system comprises a camera lens assembly (CLA) configured to cooperate with the 11 to create an X-ray image, the CLA comprising an image sensor and a lens. The image sensor is configured to convert received light and generate a digital image. The lens is configured to guide the light from the output surface to the image sensor, the lens having a fixed diaphragm. The CLA comprises an a diaphragm and/or neutral density filter with a fixed attenuation. A controller is configured to control an amount of amplification of the electric signals or the digital image. The sensor, e.g. CMOS sensor, is configured to amplify the analog electric signals before conversion into the digital image according to an analog gain, and the controller is configured to control the amount of amplification by controlling the analog gain applied by the image sensor.
Patent NL-2017786-B1 (NL)
Title: Display tray
Inventor: KLAAS SCHEPERS
IPC: A47B87/02
Filed: 2016-11-14
Granted: 2018-05-25
Abstract: The present invention relates to display trays, in particular display trays for displaying merchandise in retail stores. The display tray according to the present invention comprises a carrier floor, and a support having a hinged end and a free end, wherein the support is at the hinged end thereof hingable connected to the carrier floor for rotation about an axis of rotation between an extended state and a collapsed state.