baber/WOPTO huggingface dataset:
Patent DE-19818636-A1 (DE)
Title: Powder blasting dental device for preparation of cavity before filling especially designed for easy and precise handling
Inventor: SIEBERTZ UWE
IPC: A61C3/025
Filed: 1998-04-25
Abstract: The powder transporting duct (3) is accommodated inside the hollow handle bar (1), which is slightly bent at the top, and guided through a joint element (4) screwed to the handle bar by means of an outer thread (5) and equipped with a ball-shaped lower end (7) for holding the soft duct (3). The nozzle holding tube (10) is bent in an angle of 120 degrees, inserted into the joint element (4) with is lower end (12) and secured by a union nut (9).  The nut engages with a collar (11) protruding from the lower surface (12) of the nozzle holding tube (10). The tube (10) and the handle bar (1) can be rotated into different positions as required by the specific operation.
Patent DE-19820249-A1 (DE)
Title: Transfer device for image forming apparatus
Inventor: MIYAMOTO KAZUE
IPC: G03G15/16
Filed: 1998-05-06
Abstract: The device has a transfer belt (2) that transfers the toner image, formed on the surface of a photoreceptor (1), to a transfer paper using a transfer bias. The surface resistivity of the internal transfer-belt layer, which is on the reverse side of the surface opposite the photoreceptor, is regulated in a value exceeding 109 ohms. The surface resistivity of the transfer belt surface near the photoreceptor is regulated in a value below 1014 ohms.
Patent DE-19823610-A1 (DE)
Title: Method for producing three dimensional shell sections
Inventor: KOSCHE FLORIAN-PETER
IPC: B28B7/00
Filed: 1998-05-27
Abstract: A method for producing three dimensional shell sections has a support framework which is adjustable to the required contour. The top of the frame is represented by a grid (2) of interlinked struts which flex with the changes in shape. A flexible cover layer (3) separates the framework from the material which is hardened into the required shape. The framework is adjustable in either direction to produce convex and concave profiles on the same section. The required settings of the framework are derived from a simple computer programme.
Patent DE-19824849-A1 (DE)
Title: Verfahren und Vorrichtung zum Bearbeiten eines Belagpapierstreifens
Inventor: DOMBEK MANFRED
IPC: A24C5/47
Filed: 1998-06-04
Abstract: Es werden ein Verfahren und eine Vorrichtung zum Bearbeiten eines beleimten Materialstreifens (13) beschrieben. In vorgegebenen Flächenbereichen (54, 67) des Materialstreifens (13) wird der aufgetragene Leim mittels einer Laserstrahlung (43, 56) inaktiviert, indem der Leim oder das in dem Leim enthaltene Lösungsmittel verdampft wird. Diese Flächenbereiche (54, 67) grenzen vorzugsweise an Perforationslöcher (51) oder Trennschnitte (66) an, die jeweils mit demselben Laserstrahl (43, 56) erzeugt werden. Die Laserstrahlung (43, 56) wird dazu mittels diffraktiver Optiken (48, 59) mit zweistufiger Intensitätsverteilung in die Materialbahnebene fokussiert. DOLLAR A Diese Bereiche (54, 67) wirken wie "leimfreie Zonen". Der Vorteil der Erfindung besteht darin, daß der Leim zunächst ganzflächig aufgebracht werden kann, so daß aufwendige Maßnahmen zur auftragsseitigen Bildung von leimfreien Zonen auf dem Materialstreifen (13) nicht erforderlich sind.
Patent DE-19828030-A1 (DE)
Title: Machine processing welded plastic door and window frame sections
Inventor: LUTZ EUGEN
IPC: B23C3/12
Filed: 1998-06-24
Abstract: The machining station (3) has a milling disc (9), adjustable with respect to the frame section. The milli disc has a driveshaft at its free end.
Patent DE-19828052-A1 (DE)
Title: Einrichtung zur Temperaturbegrenzung eines Glaskeramikkochfelds
Inventor: ZAPF MARTIN
IPC: H05B3/74
Filed: 1998-06-24
Abstract: Einrichtung zur Temperaturschutzbegrenzung bei Glaskeramikkochfeldern mit einer Kochfeldsteuerung (10), die den Heizstrom zu den einzelnen Kochstellen jeweils über eine Impulsbreitensteuerung (11, 12) mit Taktrelais steuert, wobei ein Zusatzmodul (20) mit einer Signalverarbeitungsschaltung (21) mit Temperatursensoren (33, 34) verbunden ist und an eine Signalauswerteschaltung (13) der Kochfeldsteuerung (10) Temperatursignale liefert, wobei weiter die Signalauswerteschaltung (13) die Temperatursignale ständig mit einem Maximaltemperaturwert vergleicht und bei dessen Erreichen durch Öffnen des Taktrelais die Heizstromzufuhr zu der betreffenden Kochstelle sperrt, und wobei die Signalauswerteschaltung (21) des Zusatzmoduls (20) ihrerseits überwacht, ob die Kochstellentemperatur nach Erreichen des Maximaltemperaturwerts noch weiter ansteigt und, falls dies der Fall ist, ein im Heizstromkreis der Kochfeldsteuerung vorgeschaltetes Hauptrelais (23) öffnet.
Patent DE-19829003-A1 (DE)
Title: Internal assembly of sealing rings
Inventor: EITSCHBERGER HANS W
IPC: B23P19/08
Filed: 1998-06-29
Abstract: The circular shape of the ring is adhered to in every stage of assembly.  The ring(s) is/are in one piece and not slit.  The rings are formed by upsetting until no permanent deformation occurs.  The external diameter of the rings is reduced by means of physical force without the influence of temperature and without losing the circular shape.
Patent DE-19829035-A1 (DE)
Title: Low-fat dough useful for making pastry casings, stuffings, etc.
Inventor: HOHENESTER HERMANN
IPC: A23P20/20
Filed: 1998-06-30
Abstract: Dough is produced from connective tissue, vegetable matter and water, where the connective tissue is derived from the flesh of vertebrates, invertebrates and/or shellfish and the vegetable matter is derived from food plants. Independent claims are also included for the following:  (1) a process stated to be as above in which meat, rind, head skin and/or other suitable tissue or material of animal or vegetable origin is used instead of or in addition to the connective tissue; (2) a process stated to be as above in which the connective tissue is partly or completely replaced by similar tissue produced from animal or plant tissue by genetic engineering and/or biotechnology processes.
Patent DE-19831204-A1 (DE)
Title: Operation of e.g. trams, to enable power of sub-networks supplying sections of track to be reduced
Inventor: KEESE THOMAS
IPC: B60M3/06
Filed: 1998-07-01
Abstract: The method involves storing at least part of the energy required by the vehicle (3) during startup or acceleration in energy storage devices (4). The stored energy is obtained from the supply network of an energy supplier and/or recovered from vehicle braking using an electrical energy recovery system. An Independent claim is also included for an arrangement for operating electric motor powered motor vehicles
Patent DE-19834261-A1 (DE)
Title: Flying head slider for hard disc
Inventor: HANAMOTO KAZUHISA
IPC: G11B5/60
Filed: 1998-07-30
Abstract: The slider includes a head element which is supported on an end surface of a slider body (15) upstream of an air stream flowing along the slider body when a recording disc is rotated. A protection layer is formed on the end surface of the slider body to cover the head element. A recess (36) is formed on an air bearing surface of the protection layer, upstream of the boundary between the slider body and the protection layer. A recording disc apparatus is also claimed. An Independent claim is included for a flying head slider.
Patent DE-19835272-A1 (DE)
Title: Verfahren zum Eintragen von Sauerstoff und/oder eines Sauerstoff-haltigen Gasgemisches in eine Schmelze
Inventor: STRIGL REINHARD
IPC: C21C5/30
Filed: 1998-08-04
Abstract: Verfahren zum Eintragen von Sauerstoff und/oder eines Sauerstoff-haltigen Gasgemisches in eine Schmelze, wobei der Sauerstoff und/oder das Sauerstoff-haltige Gasgemisch der Schmelze während des Anstieges des Kohlenmonoxidanteiles in der Schmelze und/oder während der Frisch- oder Entkohlungsphase zugeführt werden. DOLLAR A Erfindungsgemäß erfolgt die Zuführung des Sauerstoffs und/oder Sauerstoff-haltigen Gasgemisches gepulst. DOLLAR A Erfolgt die Zuführung des Sauerstoffs und/oder Sauerstoff-haltigen Gasgemisches über eine gemeinsame oder wenigstens zwei separate Gasversorgungsleitungen und werden jeweils wenigstens ein Absperrventil sowie eine dieses Absperrventil umgehende Bypass-Leitung in der bzw. den Gasversorgungsleitungen vorgesehen, so erfolgt vorzugsweise bei geschlossenem Absperrventil eine Grundbeaufschlagung mit einer Menge von 0,1 bis 0,5 der Puls-Gasmenge des Sauerstoffs und/oder Sauerstoff-haltigen Gasgemisches.
Patent DE-19839364-A1 (DE)
Title: Appliance used for collecting waste in all private and industrial sectors has wheel of wheel support module adjustable relative to mouth of transporting channel, and especially to lower edge of transporting channel lying opposite ground
Inventor: BUECHELE NORBERT
IPC: E01H1/08
Filed: 1998-08-28
Abstract: The position of the wheel(10) of the wheel support module(6) is positionally adjustable relative to the mouth of the transporting channel, and especially to the lower edge(1') of the transporting channel lying opposite the ground. The angle(W) of the side legs of the wheel support module between an imaginary line from the axial middle point of the wheel to the front connection point(5) and imaginary line between the front and rear connection points comes to between 90 and 180 degrees.
Patent DE-19842545-A1 (DE)
Title: Operating mode selector for motor vehicle security system uses biometric signal such as fingerprint signal and selects mode based on pattern matching
Inventor: PETTIT RODERICK
IPC: G07C9/00
Filed: 1998-09-17
Abstract: A selection unit (14) is provided which activates one of at least two predetermined operating modes based on the biometric signal matching the reference pattern. The activation may be based on how frequently the signal matches the pattern or for how long it matches the pattern.  The selector includes a biometric data acquisition device (10) which acquires biometric data in the form of a biometric signal relating to a user, e.g. fingerprint signal. A biometric profile memory (12) includes at least one reference pattern.
Patent DE-19843096-A1 (DE)
Title: Protection device for car boot (trunk) lid, with elastic plastic or rubber mat integrated into lid
Inventor: STOLPER WALTER
IPC: B60R5/04
Filed: 1998-09-21
Abstract: The protection device protects the pain and bodywork against scratches and other damage when carrying objects such as loose boards, iron rods, bicycle wheels etc. with the boot lid open. An elastic mat, made of plastic or rubber, is integrated into the lid. It can lie out over the boot edge and be retracted out of sight when not in use. It may be lockable by a turning knob.
Patent DE-19846883-A1 (DE)
Title: Belt funnel for sliver-delivering spinning machine has special sliver duct design
Inventor: STROBEL MICHAEL
IPC: D01H13/04
Filed: 1998-10-13
Abstract: Planes (5,6) penetrating the front ends of the sliver duct are dislocated transversely to the middle axis (7) of the sliver duct end. The funnel has guide sections (2,3) at each side of the front duct end. Each section (2,3) ends in a front end.
Patent DE-19847506-A1 (DE)
Title: Method for advancing foil tubing on a support tube has contrarotating rollers on either side driven by a single servomotor and double sided toothed belt
Inventor: KAMMLER ROMAN
IPC: B65B9/20
Filed: 1998-10-15
Abstract: A tubular foil (2) used in bag manufacture is supported on a rigid tube (1) and is progressed by rollers on spindles (5,6) in slides (16,17) held in contact by cylinders (21). A two-sided toothed belt (9) is tensioned by a pulley (13) and driven by a servo motor.
Patent DE-19850662-A1 (DE)
Title: Gasoline tank vapor emission control valve
Inventor: JOHANSEN MARK R
IPC: F16K24/04
Filed: 1998-11-03
Abstract: The fuel tank vapor control valve includes a tank-adjoining housing (60) to carry the fuel outlet channel (64) which is connected to the surrounding air. The valve seat (82) on the top of the tank is supported by the housing and the valve port is connected to the channel (64) to feed this with fuel.   The valve head pivoted on the housing (60) closes onto the seat to shut off the port. A non return valve (71) on the base of the housing prevents fuel entering the housing but allows fuel to drain from this (60) when the tank level is lower than the fuel level in the housing.    The fuel inlet (78) in the housing lies above the bottom valve (71) and admits fuel from tank to housing. Float (68) linked to the valve head moves this open depending on the fuel level in the housing whenever the fuel level in the tank falls below a fixed setting. The float re-closes the valve head once tank fuel level rises to a second higher setting. The vessel shaped wall (76) supported by the housing (60) rings the seat (82) to prevent fuel entering along channel (64) when tank fuel level reaches the second mark.
Patent DE-19850902-A1 (DE)
Title: Rotary tower crane e.g. for building site
Inventor: SCHERGER MANFRED
IPC: B66C23/34
Filed: 1998-11-05
Abstract: The rotary tower crane has a quick-assembly group of components (16,17) that can be attached with at least one chassis axle (18,19) whose length corresponds to the width of the crane. A motor (24) is located on the quick-assembly component group to drive a chassis axle, and is coupled to the chassis axle via a clutch (25). The driven axle has a differential (31). The motor is coupled to the axle via at least one step-down gearbox. A step-down gearbox is inserted in the drive train and is designed preferably as a worm wheel gearbox.
Patent DE-19858059-A1 (DE)
Title: Netzwerk von mehreren Endgeräten und Verfahren zum Betrieb eines Netzwerks von mehreren Endgeräten
Inventor: DAPPA HENRY
IPC: H04Q11/04
Filed: 1998-12-16
Abstract: Die Erfindung betrifft ein Netzwerk (1) von mehreren Endgeräten (2), die untereinander über Schnittstellen (3) und mindestens einen Asynchronous-Transfer-Mode (ATM)-Vermittlungsswitch (4) verbunden sind, wobei die Endgeräte (2) ATM-Anschlüsse aufweisen und untereinander über virtuelle ATM-Kanäle (5) Daten austauschen. Um bei einem solchen Netzwerk (1) insbesondere den Aufbau einer Datenübertragungsverbindung zu einem gewünschten Teilnehmer, der über mindestens ein Endgerät (2) in dem Netzwerk (1) erreichbar ist, zu erleichtern und zu beschleunigen, wird vorgeschlagen, daß mehrere Endgeräte (2) zu einer Gruppe zusammengefaßt sind, daß mindestens ein Endgerät (2) der Gruppe als Proxy-Agent (6) definiert ist, daß der Schnittstelle (3) des Proxy-Agenten (6) eine ATM-Adresse zugewiesen ist, daß der Proxy-Agent (6) erste Mittel zur Auswahl der Schnittstelle (3) eines der Endgeräte (2) der Gruppe aufweist, zu oder von dem eine Datenübertragungsverbindung aufgebaut werden soll, und daß der Proxy-Agent (6) zweite Mittel zur Auswahl des ATM-Kanals (5) aufweist, über den die Daten übertragen werden sollen.
Patent DE-19859251-A1 (DE)
Inventor: STUERMER RAINER
IPC: B65D33/28
Filed: 1998-12-22
Abstract: Preparation of substituted chroman derivatives in multi-stage process from acrolein-aldehyde starting material via new intermediates. Preparation of substituted chroman derivatives of formula (VII) comprises: (a) reacting an acrolein-aldehyde of formula (I) with an acrylonitrile-, acrolein-, acrolein-acetal-, allyl-alcohol- or allyl ether of formula (II) to give the corresponding 3,4-dihydro-2H-pyran of formula (III); (b) treating (III) with an acid to give the corresponding 5-oxo derivative of formula (IV); (c) reacting this with a substituted vinyl-ketone of formula (V) to give a chromen-6-one of formula (VI); and (d) dehydrating to give (VII). X = CN, COOR3, CHO, CH2OR7 or CH(OR8)2; R1 = 1-4C alkyl, 6-18C aryl, 7-18C aralkyl, optionally halogenated 1-4C acyl or an acid labile hydroxy protecting group; R2 = 1-23C alkyl, 2-23C alkenyl, 6-18C aryl or 7-18C aralkyl; R3 = H, 1-4C alkyl, 1-4C haloalkyl, 1-4C hydroxyalkyl or 1-4C aminoalkyl; R4-R6 = H or 1-4C alkyl; R7 = H or 1-4C alkyl; R8 = 1-4C alkyl; or R8+R8 = 2-6C alkenyl optionally branched and optionally substituted by 1-2 carboxyl, cyclohexyl or phenyl. Independent claims are included for: (1) pyran derivatives (III) as new; (2) preparation of (III) using step (a) as above; (3) tetrahydropyran derivatives (IV); (4) preparation of (IV) using steps (a) and (b) as above; (5) chromen-6-one derivatives (VI); (6) preparation of (VI) using step (c) as above.
Patent DE-19901797-A1 (DE)
Title: Bending machine places tool not currently in use into rest position in which there is free space between clamping plane and tool extending over arc of circle
Inventor: KUTSCHKER WOLFGANG
IPC: B21D5/04
Filed: 1999-01-19
Abstract: The bending machine has a machine frame with upper and lower panels. It has upper and lower clamping tools (310,110) for the flat material, and a lower bending tool movement device. The movement device enables a lower tool carrier (112) to be moved to bend the material about an upper bending edge into a number of bending positions. There is an upper bending tool movement device for moving an upper carrier (312) to bend the material about a lower bending edge into a number of bending positions. The tool not currently in use is brought into a rest position in which there is a free space between the clamping plane and tool extending over at least 110 degrees.
Patent DE-19901856-A1 (DE)
Title: 3dB-Leistungsteiler
Inventor: SCHNEIDER MARTIN
IPC: H01P5/20
Filed: 1999-01-19
Abstract: Der 3dB-Leistungsteiler ist als eine Hohlleiter-Verzweigung mit vier Toren (T1, T2, T3, T4) ausgeführt. Damit alle Arme der Hohlleiter-Verzweigung in einer Ebene liegen, ist an einer Breitseite eines zentralen rechteckförmigen Hohlleiters (1) ein erster rechteckförmiger Hohlleiterarm (2) stirnseitig so gekoppelt, daß seine Breitseite sich in Richtung der Breitseite des zentralen Hohlleiters (1) erstreckt. Ein zweiter Hohlleiterarm (3) ist an der dem ersten Hohlleiterarm (2) gegenüberliegenden Breitseite des zentralen Hohlleiters (1) so angekoppelt, daß die Breitseite des zweiten Hohlleiterarms (3) senkrecht zur Breitseite des zentralen Hohlleiters (1) orientiert ist.
Patent DE-19904784-A1 (DE)
Inventor: MATYSIAK STEFAN
IPC: B01J19/00
Filed: 1999-02-05
Abstract: The invention relates to a flow-through device and its use for binding polymers to membrane surfaces, the position of said polymers on said surfaces being determined via x, y parameters. The flow-through device is used in particular with a method of synthesis of membrane-bonded molecular libraries. The figure shows a flow-through device of the type provided for in the invention, in the form of a synthesis block.
Patent DE-19908397-A1 (DE)
Title: Filter-interceptor holder used in textile, plastic and paper industries has air-flowing cross-section of pipes blocked by a holder with fixed mesh aperture
Inventor: EITSCHBERGER HANS W
IPC: B01D46/42
Filed: 1999-02-26
Abstract: In the filter-interceptor holder, the air feeding cross-section of the pipes are blocked by a holder with fixed mesh aperture which is open at the air inlet.
Patent DE-19916208-A1 (DE)
Inventor: FABRY BERND
IPC: A61K8/365
Filed: 1999-04-10
Abstract: The invention relates to sunscreen agents containing (a) hydroxycarboxylic acid alkyl- and/or -alkenyloligoglycoside esters and (b) UV-light protection agents or pigments.
Patent DE-19917903-A1 (DE)
Title: Motor For hand tool machine, has commutator with pair of brushes held by lengthwise shiftable brush holder
Inventor: MEIXNER GERHARD
IPC: H02K13/00
Filed: 1999-04-20
Abstract: Motor has a commutator with at least a pair of brushes (17) held by a lengthwise shiftable brush holder (15). A longitudinal guide (20) has interruptions in the shifting direction.
Patent DE-19918409-A1 (DE)
Title: Bioreaktor umfassend einen Medienablauf und einen Rührer sowie Rührer und Medienablauf
Inventor: SCHMIDT SEBASTIAN
IPC: C12M3/02
Filed: 1999-04-22
Abstract: Die Erfindung betrifft einen Bioreaktor (1), umfassend einen Medienablauf (10) und einen Rührer sowie einen Rührer und einen Medienablauf und einen Filter zum Zurückhalten von sich in der Flüssigkeit befindenden Zellen der erfindungsgemäß dadurch gekennzeichnet ist, daß sein Rührer zum Einsatz kommt, der dicht über dem Boden des Bioreaktors (1) liegt und der Bioreaktor (1) einen Medienablauf (10) besitzt, der dicht über dem Rührer (13) endet und vorzugsweise als Konus (11) ausgebildet ist und mit einem Filter (12) ausgestattet ist, welches im wesentlichen parallel zum Boden des Bioreaktors (1) verläuft und einen geringen Abstand zum Rührer (1) hat. Vorteilhafterweise ist der Rührer (13) in Rotationsrichtung in einem Winkel von 45 DEG abgewinkelt, so daß er bei der Rotation eine Aufwärtsströmung erzeugt. DOLLAR A Der Bioreaktor ist insbesondere für die Züchtung von wertvollen Zellen geeignet, die ein kleines Reaktorvolumen erfordern. Weiterhin ist der Rührer (13) besonders zellschonend.
Patent DE-19923536-A1 (DE)
Title: Catering coffee machine
IPC: A47J31/56
Filed: 1999-05-21
Abstract: The catering coffee machine has a reservoir with a sensor which detects the volume of fluid and especially detects and signals that the reservoir is empty.
Patent DE-19924366-A1 (DE)
Title: Kautschukpulver, die hohe Mengen an Füllstoffen enthalten, Verfahren zu ihrer Herstellung und ihre Verwendung
Inventor: GOERL UDO
IPC: C08J3/16
Filed: 1999-05-27
Abstract: Die Erfindung betrifft Kautschukpulver mit einem hohen Füllgrad, die man durch Ausfällen aus wasserhaltigen Suspensionen, die Füllstoffe und Kautschukemulsionen oder -lösungen enthalten, gewinnt und ihre Verwendung zur Herstellung von vulkanisierbaren Kautschukmischungen.
Patent DE-19924582-A1 (DE)
Title: Kühlbarer flexibler Stromleiter
Inventor: KAPOOR JIVAN
IPC: H01B7/42
Filed: 1999-05-28
Abstract: Die Erfindung bezieht sich auf einen kühlbaren flexiblen Stromleiter, welcher auch für hohe Stromstärken einsetzbar sein soll, mit zwei im Abstand zueinander parallel verlaufenden flexiblen, elektrisch leitenden Leiterelementen, die an eine elektrisch isolierende Trennwand und mit ihren freien Oberflächen an einen fluiddichten schlauchförmigen Hohlraum angrenzen, der mit einem Kühlfluid beaufschlagbar ist.
Patent DE-19926873-A1 (DE)
Title: Arrangement for keeping persons awake for safety reasons
Inventor: HALFMANN KLAUS HILMAR
IPC: A61M21/00
Filed: 1999-06-12
Abstract: The arrangement has an electrical circuit that is made when the position of the head changes as a person falls asleep. Closing the circuit causes a signal generator to be activated, thus preventing the person from falling asleep.
Patent DE-19934385-A1 (DE)
Title: Haarkosmetische Reinigungsmittel mit Wirkstoffkombinationen aus Gamma-Oryzanol und Calciumsalzen mit niedriger Metallionenkonzentration
Inventor: ARGEMBEAUX HORST
IPC: A61Q5/12
Filed: 1999-07-22
Abstract: Gegenstand der Erfindung sind haarkosmetische Reinigungsmittel, dadurch gekennzeichnet, daß sie Gamma-Oryzanol und ein Calciumsalz oder mehrere Calciumsalze, ausgewählt aus der Gruppe, gebildet von Calciumpanthotenat, Calciumchlorid und Calciumlactat, enthalten, wobei die Konzentration an in freier Ionenform vorliegenden polyvalenten Metallkationen unter 0,004 M beträgt.
Patent DE-19935239-A1 (DE)
Title: Handsaw blade guard comprises possibly plastics rail coiling out off in-grip shaft along blade edge to hook fast at far end until returned by spring.
Inventor: BRUNNER HEINZ
IPC: B27G19/00
Filed: 1999-07-28
Abstract: The guard rail (4) inside the saw grip (2) pulls out against a return spring to be releasably secured to the free far end of the saw blade (1). The rail coils onto a sprung shaft (3) within the grip (2) and the rail is fitted with film-hinged etc side flanges which swing in from the sides onto the blade. The film hinges consist of two rail notches and the leading end of the rail has a hook (6) to engage a slot (7) at the far end of the blade.