baber/WOPTO huggingface dataset:
Patent CA-3225228-A1 (CA)
Title: Extended-reality projectile-firing gaming system and method
Inventor: GUINN COLIN
IPC: A63F13/837
Filed: 2022-07-11
Abstract: An extended-reality projectile-firing gaming system includes a projectile-firing device, a battlefield object configured to detect impact of projectiles thereon, a network configured to provide communication and control connectivity in accordance with at least one protocol to the projectile-firing device and the wearable device, and an extended-reality gaming application. The application controls the projectile-firing device and the wearable device, receives projectile-firing device data from the projectile-firing device, receives battlefield object data from a battlefield object, the battlefield object data indicating that an impact occurred on the battlefield object, the time the battlefield object was impacted, and updates gaming metric data to indicate a successful impact of the fired projectile on the battlefield object and a successful hit by the projectile-firing device on the battlefield object.
Patent WO-9215210-A1 (WO)
Inventor: TASSE GILLES
IPC: A24F19/00
Filed: 1992-02-28
Abstract: An ashtray (1) including a container (2) whose top is provided with a grid (3) of a series of inclined ribs (10) forming a venetian blind like structure. The rim (4) of the grid (3) has specially designed rest means (16) which allows the placement of a smoked but not yet finished cigarette or the like only at a predetermined position relative to the ribs (10). The ribs being flat and inclined, they obstruct the view of the unsightly interior of the container and thus provide a more pleasing overall appearance of the ashtray despite a relatively steep angle of inclination, as raised transverse rim portions (17) obstruct the view of the grid (3) from the ends of the ribs (10).
Patent WO-9811440-A1 (WO)
Inventor: MEDDINGS JONATHAN B
IPC: G01N33/574
Filed: 1997-09-12
Abstract: Disclosed is a composition for the site-specific detection of gastrointestinal damage containing (a) a first disaccharide that does not degrade in the colon, small intestine or stomach; (b) a second disaccharide that degrades in the colon but does not degrade in the small intestine or stomach; and (c) a third disaccharide that degrades to its monosaccharides in the small intestine and not in the stomach. A method for the site-specific detection of gastrointestinal damage employing the composition of the invention is also disclosed. The composition is exemplified by a sucralose, lactulose, sucrose composition, optionally also with mannitol.
Patent WO-9809900-A1 (WO)
Title: Technique de devidement de rouleaux de papier
Inventor: KEWIN DANIEL D
IPC: B65H16/06
Filed: 1997-09-05
Abstract: La technique de montage de rouleaux de papier à dévider, ces rouleaux étant plus étroits que la normale, sur deux mandrins de remplacement écartés pour permettre le montage et le dévidement de rouleaux de papier pleine largeur soutenus par les bras de deux porte-bobines multiples, consiste à placer un rouleau de papier plus étroit enroulé sur un support tubulaire constitué d'un noyau cylindrique creux et d'éléments terminaux annulaires, en métal ou en matière plastique, placés à chaque extrémité du noyau. Les éléments terminaux s'enlèvent du noyau, ce qui permet de monter celui-ci à l'emplacement souhaité dans le sens de la longueur sur un arbre pleine longueur dont les extrémités opposées sont susceptibles de s'engager dans les mandrins de remplacement précités. Le dispositif comporte des mécanismes d'engagement de noyau qui permettent de fixer le noyau à l'emplacement souhaité ainsi que de transmettre un couple de rotation de l'arbre au noyau. Il est, de la sorte, possible de monter l'arbre pleine longueur, porteur du rouleau de papier plus étroit, sur les porte-bobines multiples dont les mandrins de remplacement ont été écartés aux dimensions des rouleaux de papier pleine largeur sans interrompre le processus de dévidement d'un autre rouleau de papier monté sur les porte-bobines multiples.
Patent WO-9964025-A1 (WO)
Inventor: STECK WARREN
IPC: A61K36/282
Filed: 1999-06-08
Abstract: The present invention provides tyrosinase inhibiting extracts from dicotyledonous plant species indigenous to Canada and compositions containing the extracts for the treatment of skin, particularly skin lightening. The present invention also provides a method of detecting tyrosinase activity in an extract of a dicotyledonous plant species indigenous to Canada.
Patent WO-0014377-A1 (WO)
Title: Dispositif permettant de gonfler et de degonfler separement des packers pour trou de forage
Inventor: DIVIS JAN J
IPC: E21B33/127
Filed: 1999-09-08
Abstract: Cette invention porte sur un dispositif -estiné à commander séparément le gonflage et le dégonflage de packers distincts mis en place dans un tubage. Ce dispositif comporte un clapet de packer (36) monté dans le tubage (24). Ce clapet est en communication fluidique avec l'un des packers (28). Une sonde (124) se déplace dans le tubage de façon à parvenir au clapet (36) et à gonfler ou dégonfler le packer concerné (28). Ce clapet (36) comprend un corps dans lequel a été ménagé un alésage (40), un conduit de fermeture (42) et un conduit d'ouverture (44), communiquant, chacun, avec l'alésage. Il est possible d'installer des capteurs de pression dans la sonde (124) afin, d'une part, de mesurer la pression du fluide dans le packer (28) durant le gonflage et le dégonflage ainsi qu'après ces opérations et, d'autre part, de confirmer l'ouverture et la fermeture du clapet (36).
Patent WO-8607395-A1 (WO)
Title: Gas iron
Inventor: NOIR DOMINIQUE
IPC: D06F75/02
Filed: 1986-06-03
Abstract: The iron comprises a collapsible handle (11) containing a gas cartridge (10) which is mounted oscillating on a connection part (12) which comprises a regulating valve controlled by a hand-operated member (23) on the one hand, and by a bimetal strip (29() on the other hand. The gas coming out of said valve is directed in a venturi (5) carrying a burner (6). The bimetal stream (29) is connected to the ironing sole (1) by means of an aluminium stud (30) which is located upstream of the combustion chamber delimited by the walls (2, 4) in order to regulate the valve as a function of the temperature of the sole.
Patent WO-9118168-A1 (WO)
Title: Timed triggering control device for a mechanism
Inventor: BOLTZ JEAN-HENRI
IPC: E05G1/026
Filed: 1991-05-10
Abstract: The device includes at least one sliding bolt in a disengaging mechanism, and at least one movable pin arranged to lock said disengaging mechanism and prevent movement of the bolt. It is mounted in a housing (10) and consists of two identical control modules (11, 12) each having an arm (11a, 12a) which is fast on a lever (13) controlling the movable locking pin (14). Each module is mounted on a base plate (11b, 12b) supporting a mechanical activating device (11c, 12c) and a device for controlling this device and pushing the arm (11a, 12a) by means of a detent pin (11d, 12d). The activating device comprises at least one potential energy storage element while the module comprises a device for arming this element. A programmable electronic timing device and a member coupled thereto are provided for releasing the potential energy at a predetermined time. Each module has an independent power supply from cells or batteries (11e, 12e). A display device (11f, 12f) provides control parameter display.
Patent WO-9422111-A1 (WO)
Title: Method for producing a card with at least one electronic component
Inventor: DROZ FRANCOIS
IPC: G06K19/077
Filed: 1994-03-14
Abstract: A method for producing a card including at least one electronic component (14), particularly a card having no external contacts and further including a coil (16). According to the method, a structure (10) made of meltable material for positioning the electronic component (14) and the coil (16) is arranged on a work surface (2). By supplying energy, the structure (10) is at least partially melted and pressure is exerted on said melted structure to form a mass in which the electronic component (14) and the coil (16) are embedded.
Patent WO-9808411-A1 (WO)
Title: Verstellbarer standschirm
Inventor: GLATZ GUSTAV ADOLF
IPC: A45B17/00
Filed: 1997-08-21
Abstract: Der Standschirm weist einen Standmast (2) auf, an welchem ein Ausleger (10) mittels eines Gelenkes (12) ein- und ausfahrbar sowie um eine senkrecht zur Mastachse stehende Kippachse (14) des Gelenkes (12) kippbar angeordnet ist. Das Gelenk (12) umfasst einen Gelenkkopf (80) sowie ein Paar spiegelbildlich symmetrisch angeordnete, den Gelenkkopf (80) einschliessende, um die Kippachse (14) drehbar gelagert angeordnete Gelenkschalen (82, 82'), wobei das Gelenkschalenpaar (82, 82') mit einer senkrecht zur Kippachse (14) ausgerichteten Längsführung (84) zur Aufnahme des Auslegers (10) versehen ist. Eine Arretierungsvorrichtung (90) beinhaltet ein parallel zur Kippachse (14) ausgerichtetes Kippgelenk (92) und eine Spannvorrichtung (94), mittels welcher die Gelenkschalen (82, 82') gegeneinander und gegen den Gelenkkopf (80) andrückbar sind, derart, dass bei angezogener Spannvorrichtung (94) der Ausleger (10) in der Längsführung (84) gegen Verfahren arretiert ist und ausserdem die Gelenkschalen (82 bzw. 82') mit dem Gelenkkopf (80) mittels zusammenwirkender Kontaktflächenpaare (114 bzw. 114') gegen Verdrehen arretiert sind. Bei gelöster Spannvorrichtung (94) ist die Längsführung (84) des Auslegers (10) freigebbar und ausserdem ist der Ausleger (10) in einem durch zwei Endanschläge (116, 116', 118, 120) begrenzten Kippwinkelbereich (α) zwischen einer Ruhestellung und einer Arbeitsstellung verstellbar.
Patent WO-0135628-A1 (WO)
Title: Procede permettant d'offrir un service a valeur ajoutee pour le prepaiement mobile a differents emplacements
Inventor: LI MOFANG
IPC: H04M17/00
Filed: 2000-06-16
Abstract: L'invention concerne un procédé permettant d'offrir un service à valeur ajoutée pour le prépaiement mobile à différents emplacements faisant intervenir un réseau intelligent. Selon le procédé, un SDP d'un réseau intelligent est séparé d'un SCP et toutes les données contenues dans les cartes à valeur ajoutée pour le prépaiement mobile sont mémorisées dans le SDP. Lorsqu'un utilisateur du service de prépaiement mobile compose le numéro d'accès au service pour effectuer une opération à valeur ajoutée et le SSP qui analyse le numéro de l'appelant, détermine son SDP à domicile et déclenche un appel intelligent vers son SDP à domicile. L'opération complète d'ajout de valeur est gérée par le SCP à domicile et par l'opération interactive entre SCP à domicile et SDP. Les données utilisateur et le statut de la carte à valeur ajoutée sont modifiés. Grâce à ce procédé on peut réduire la complexité des techniques d'ingénierie, la gestion des données et les statistiques et faciliter l'expansion du réseau intelligent.
Patent WO-9513489-A1 (WO)
Inventor: LIN YNG-LANG
IPC: F16F9/04
Filed: 1994-11-07
Abstract: The invention relates to a free-inflating pneumatic cushion for absorption of shocks. The cushion is suitable for protecting the chest and belly of occupants. The cushion is comprised of a flexible hollow container manufactured by a blow-moulding machine suited for producing flexible hollow containers or bottles. The flexible hollow container contains a vent allowing the air to pass, so that the flexible container may serve as the cushion.
Patent WO-9845639-A1 (WO)
Inventor: LIU XIAOMING
IPC: F16L19/03
Filed: 1997-08-14
Abstract: This invention relates to hose coupling comprising an inner pipe (10) and an outer pipe (20). The rear portion (11) of the inner pipe (10), having a rotary surface with different diameters in different cross sections, is coupled with the hose by cooperating with the conical inner surface of the rear portion of pipe (20).
Patent WO-0130119-A1 (WO)
Title: Ansteuerschaltung für led und zugehöriges betriebsverfahren
Inventor: BIEBL ALOIS
IPC: H05B44/00
Filed: 2000-04-01
Abstract: Ansteuerschaltung für ein LED-Array, bestehend aus mindestens zwei Strängen von LEDs, wobei ein Strang aus mehreren in Serie angeordneten LEDs besteht, die an eine Versorgungsspannung (UBatt) angeschlossen sind, wobei zwischen jedem LED-Strang und der zugehörigen Versorgungsspannung ein Halbleiterschalter (T) in Serie angeordnet ist, der es ermöglicht, den LED-Strom getaktet zuzuführen, wobei im Zweig für den Durchlaßstrom IF zwischen LEDs und Masse ein Meßwiderstand (RShunt) in Serie zu den LEDs angeordnet ist. Ein Regelkreis regelt den Halbleiterschalter (T1) eines ersten LED-Strangs, im folgenden Master-Strang gennant, so daß ein konstanter Mittelwert des LED-Stroms erzielt wird, wobei der Master-Strang eine vorgegebene Anzahl X von LEDs in seinem Strang aufweist, wobei dieser Regelkreis auch zumindest den Halbleiterschalter (T2) eines weiteren LED-Strangs, im folgenden als Slave-Strang bezeichnet, ansteuert.
Patent WO-0072340-A1 (WO)
Title: Photovoltaisch selbstladendes speichersystem
Inventor: GEORG ANDREAS
IPC: H01G9/20
Filed: 2000-05-15
Abstract: Die vorliegende Erfindung betrifft ein photovoltaisch selbstladendes Speichersystem mit einem Schichtaufbau, bei dem ein erster Stoff (1), der ein erstes Redoxsystem bildet, ein zweiter Stoff (2), der ein zweites Redoxsystem bildet und ein lichtempfindlicher Stoff (3) in oder zwischen einer ersten (4) und einer zweiten elektrisch leitenden Schicht (5) angeordnet sind. Zumindest eine der elektrisch leitenden Schichten (4, 5) ist hierbei für sichtbares Licht transparent. Der erste und der zweite Stoff (1, 2) sind mit je einer der elektrisch leitenden Schichten (4, 5) in elektrischem Kontakt und derart innerhalb des Schichtaufbaus angeordnet, daß der lichtempfindliche Stoff (3) unter Einwirkung von Licht eine Redoxreaktion Aox + Bred ∊ Ared + Box induziert, die bei Wegfall des Lichtes umgekehrt werden kann. Bei dem erfindungsgemäßen System ist die Schichtdicke, über die sich der erste (1) und/oder zweite Stoff (2) erstrecken, so ausgelegt, daß eine für den Betrieb eines elektrischen Verbrauchers ausreichende Ladungsspeicherung ermöglicht wird. Durch zusätzliche Einführung einer die Rückreaktion beschleunigenden Katalysatorschicht ist eine räumliche Trennung der Hin- und Rückreaktion besonders gut möglich. Das erfindungsgemäße System ermöglicht in vorteilhafter Weise die photovoltaische Umwandlung und Speicherung elektrischer Energie in einem einfachen Schichtaufbau.
Patent WO-0160895-A1 (WO)
Title: Membran für brennstoffzellen
Inventor: MEISSNER DIETER
IPC: H01M8/0289
Filed: 2001-02-16
Abstract: Die Erfindung betrifft eine Membran, insbesondere eine Membran für den Einsatz in einer Methanol-Brennstoffzelle. Die erfindungsgemässe Membran weist Komplexbildner für Kationen auf und fungiert somit wie ein Anionenaustauscher. In einer besonderen Ausführungsform weist die Membran Komplexbildner aus der Gruppe Kronenether, Kryptate oder Kryptat-ähnliche Verbindungen auf Kohlenstoff- oder Silicon-Ringverbindungen basierend auf.
Patent WO-0169733-A1 (WO)
Inventor: MEISTER JOERG
IPC: H01S3/091
Filed: 2001-03-19
Abstract: The invention relates to a pump chamber (2), in which laser active medium is stored. The pump light is introduced into said pump chamber (2), by means of one or several fluid light guides (12), whereby the fluid used as a light guide is used as coolant for the laser active medium (1).
Patent WO-03071073-A1 (WO)
Title: Antriebsvorrichtung
Inventor: BUSS HEIKO
IPC: H02K11/00
Filed: 2002-11-06
Abstract: Antriebsvorrichtung (10), insbesondere zum Heben und Senken von Scheiben im Kraftfahrzeug, mit einem eine Ankerwelle (16) aufweisenden Elektromotor (12), einer aus einem Elektronikgehäuse (36) ragenden Leiterplatte (32), einem Getriebegehäuse (18), und mehreren Führungen (44) zur räumlichen Fixierung der Leiterplatte (32) im Getriebegehäuse (18), wobei für unterschiedliche Leiterplatten (32) mit unterschiedlichen Breiten (62) und/oder Längen und/oder mit unterschiedlichen Abständen (66) zur Ankerwelle (16) unterschiedliche Führungen (44) mit der Leiterplatte (32) wechselwirken.
Patent DE-1801556-A1 (DE)
Title: Substd hexahydro-pyrimidinones
Inventor: HESSE DR KARL-DIETER
IPC: C07D239/10
Filed: 1968-10-05
Abstract: SUBSTD. HEXAHYDRO-I-PYRIMIDINONES G5- Are prepared by reacting urea cpd. (I) with aldehyde (II) and olefin (III): (where R' is H, phenyl (opt. substd. by 1 or 2 CH3 groups) or 1-5C alkyl, R2 is H or 1-5C alkyl, R3 is H or opt. branched 1-4C alkyl, R4 and R5 are H or CH3 and R6 is phenyl, vinyl or CH3 (R6 is not = CH3 when R4 = H)) in the presence of a strong acid (pref. H2SO4) at 0-70 degrees C (pref. 15-49 degrees C), opt. in the presence of solvents (pref. AcOH), and isolating the free base from the resulting reaction product in a conventional manner. (I), (II) and (III) are pref. used in equimolar amounts. The products are useful as textile auxiliaries and intermediates for pharmaceuticals.
Patent DE-1814662-A1 (DE)
Title: Steel bar casting guide
Inventor: GEORG BOLLIG DIPL-ING
IPC: B22D11/128
Filed: 1968-12-13
Abstract: Guiding device for an orientated bar of steel with solidified outer layer and liquid core in a bar casting apparatus is so designed that the bar and rollers and/or plates form cooperating units of the guiding device arranged after the input and which support the outer layer on at least two facing sides against the ferrostatic pressure, whilst at least one of these units can be moved or tilted.
Patent DE-1815404-A1 (DE)
Title: Di-imides useful as uv-stabilisers and as - anti-oxidants
Inventor: ERICH BEHR DIPL-CHEM DR
IPC: C07D209/48
Filed: 1968-12-18
Abstract: The imides have the formula:- (where R and R' are (cyclo)alkyl or aryl residues (substituted or conting hetroatoms) or several such residues connected by -O-, -CO-, =N-, -SO2- or CH2- and X is H, halogen, OH, COOH, COC1, NO2, CON3 or NCO) and are prepared by reacting at 0 degree C-300 degrees C (pref. 50 degrees C-200 degrees) an azide of a dicarboxylic acid N3OCRCON3 (R as above) esp. a phthalic azide, with an acid anhydride XR1 (CO)20, e.g. phthalic anhydride or trimellitic anhydride, opt. in a solvent e.g. hydrocarbon.
Patent DE-1816837-A1 (DE)
Title: Prodn of fungicidal copper 8-hydroxyquinoline - phenolates
Inventor: GOEZE DR DIPL-CHEM GUENTER
IPC: C07D215/30
Filed: 1968-12-24
Abstract: This fungicidal compound, especially useful for seed-dressing is produced by intensively stirring dry mixtures of (1) Cu-8-hydroxyquinoline with pentachlorophenol; or (2) 8-hydroxyquinoline with copper pentachlorophenolate; or (3) 8-hydroxyquinoline with Na-pentachlorophenolate (or pentachlorophenol) and a copper salt, such as oxychloride, chloride or sulphate. The process is simple and proceeds nearly quantitatively.
Patent DE-1901096-A1 (DE)
Title: Ignition oven for sintering belt
Inventor: SCHWAB KURT
IPC: F27B1/08
Filed: 1969-01-10
Abstract: Series of burners is perp. to belt direction. Both front walls of the furnace have a sealed series of burner; neighbouring burners are differently inclined to the surface of the sintered material on the sinter belt. Pref. wind boxes are in a series below and along the belt.
Patent DE-1917080-A1 (DE)
Title: Heating wires for laminated glass vehicle - windscreens
Inventor: FUJIWARA YASUHARA
IPC: B32B17/10
Filed: 1969-04-02
Abstract: At least 2 glass sheets are united around by a spaced electrical wire cement, and an intermediate layer at least locally. First a thin layer of cement is placed on one of a film of material which does not adhere to the cement, heater wires are then added in the required arrangement to the coating, which is separated from the film and placed between 2 glass sheets which are then cemented together. Preferably the coating is of the same cement as for joining the glass sheets, e.g. a polyvinyl butyral resin. The film is polyethylene.
Patent DE-1924546-A1 (DE)
Title: Ammonium chloride slag treatment for zinc - chloride prodn
Inventor: ERWIN DIEHL DR-ING
IPC: C01G9/04
Filed: 1969-05-14
Abstract: Ammonium chloride slags of various origin and degree of hydrolysis, esp. for production of ZnCl2, are processed by (a) mixing raw materials in such proportion that ZnCl2 is converted to Zn-NH4 chloride and Zn oxychloride and (b) crushing to 3-30 mm. particles, finer particles being recycled to (a) and coarser ones to (b), then (c) lixiviating with soln. containing ZnCl2 and NH4Cl with concentration falling from 30 to 5% and temp. rising from 28 to 80 degrees C by (d) forcing liquor through material from bottom of vessel and removing after 5-60 min. contact time and (e) reversing liquid flow. Process gives valuable soln. containing ZnCl and NH4Cl and residue of NH4Cl-free Zn(OH)2 or oxychloride, suitable for producing pure ZnCl2.
Patent DE-1926493-A1 (DE)
Title: Charging device for scrap metal blocks
Inventor: OZEKI SABUROJI
IPC: F27D3/00
Filed: 1969-05-23
Abstract: Main chains are suspended from a suspension element which in turn is suspended from a main wire rope. The lower ends of the chains are interconnected by base closure chains. These chains are interconnected by detachable connecting pins, which are connected to auxiliary chains on an auxiliary wire rope.
Patent DE-1959503-A1 (DE)
Title: Work piece clamp/ejector
Inventor: MOLT HEINZ
IPC: B21D45/00
Filed: 1969-11-27
Abstract: Workpiece clamp/ejector, for non-cutting-formed or cut-out workpieces, uses a rod which carries a pneumatic piston which has openings which connect its two sides. The compressed air can be fed to the piston in a direction opposite to the clamp pressure or to the ejection motion.
Patent DE-1964921-A1 (DE)
Title: Phenyl phosphonate pesticides with insecti- - cidal and acaricidal activity
Inventor: SEHRING RICHARD DR
IPC: C07F9/40
Filed: 1969-12-24
Abstract: Phenyl phosphonates (I):- (where R is 1-3C alkyl, X is Cl or Br and Y is Br or I) are prepd. by (a) reacting an O-alkyl phenylphosphonyl chloride C6H5PO(OR)Cl (II) with (III) a phenol (III) as a salt or in the presence of acid-binders; or (b) reacting a phenyl phosphonic acid deriv. (IV) with an alcohol ROH (V), in presence of a base. (I) are active ingredients in pesticide compsns, for example against flies, beetles, cockroaches and mites, partic. caterpillars.
Patent DE-2031211-A1 (DE)
Title: Fail safe electronic instrumentation for - varying chemical and physical parameters
Inventor: OLSEN A H
IPC: G21C9/00
Filed: 1970-06-19
Abstract: A series parallel arrangement of AND gates, square wave gating generators and input/output devices provides multiple paths for any one parameter. When of the "n" possible transmission chains for the parameter "m" remain blicked at any one time, the transmission is interrupted. Before every AND gate in each chain is a threshold gate circuit and all "n" chains are linked to a common point before the threshold circuits in the corresponding chains so that the these circuits receive a unitary input signal.
Patent DE-2146781-A1 (DE)
Title: Coffee bags - containing flakes of coffee for making coffee by infusion in water
Inventor: HEUSINKVELD MERLYN RODNEY
IPC: A23F5/12
Filed: 1971-09-18
Abstract: Coffee bags for use in water infusion contain flakes of coffee obtd. by rolling in the grinding cylinders of a coffee roaster. The bags are made out of a material which is permeable to water. The pore size of the material may be in the range 5-1000 mu.
Patent DE-2166985-A1 (DE)
Title: Bi-metallic strip thermostat - with one end of strip secured to one end of sleeve-like sensor into which strip projects
Inventor: ZOEBL HARTMUT
IPC: H01H37/12
Filed: 1971-04-08
Abstract: Thermostat has one end of a bimetallic strip secured to one end of a sleevelike sensor casing into which the strip projects. The other end of the casing is attached to a connection socket of insulating material which receives an outwardly projecting connection element and a contact support which projects into the casing, is connected to the connection element and receives an adjusting screw which extends at right angles to the plane of the strip. The screw has at one end a contact opposite a contact on the bimetallic strip. The strip is welded onto a supporting body which is inserted into the end of the casing spaced from the connection socket. A spring preventing rotation of the screw rests on the support and engages the screw threads.