Abstract: A rectangular tray 11 with a hinged cover 16 and a gripping mechanism 37 for various sized envelopes to fit into a box shaped device 10 with a rectangular upper opening 20 leading horizontally to a motorized cutter 23 above a moveable tray 31 which communicates with a rectangular lower opening 21.

Abstract: Apparatus for extracting oil from the peel of whole citrus fruit includes a frame and a plurality of parallel horizontal rolls including toothed projections for piercing the outer surface of the whole fruit. Each of the plurality of rolls is rotatably supported via a rotatable shaft that is mounted to the frame. A plurality of motors are secured to the frame, each of the plurality of motors are mechanically coupled to a corresponding shaft of the rolls, wherein each motor independently rotates the shaft and roll. The apparatus also includes a controller for individually controlling the rotational speed of each of the rolls.

Abstract: A cutting tool holder for holding a cutting member, which is attached to a drive unit for driving the cutting member. A first elastic member is elastically deformable in a first direction. A second elastic member is elastically deformable in a second direction different from the first direction. An elastic connection member elastically connects the first and second elastic members. A first attachment member is disposed in the first elastic member to be connected to the drive unit. A second attachment member is disposed in the second elastic member to attach the cutting member.

Abstract: A paper cutter including a cutting arm pivotally mounted to a base by a pivot pin having at least two different thread sizes on adjacent portions of its distal end. A first section bears threads of a first size that are complementary to threads of a nut. A second section adjacent the first portion bears threads of a second size different from the first size. The nut is threaded onto the first section of the pivot pin having complementary threads, and then forcibly driven onto the second section of the pivot pin having mismatched threads. This positively locks the nut onto the pivot pin by deforming at least a portion of the mismatched threads. The cutting arm is thereby locked using a single nut and a second lock nut and related assembly steps are thereby eliminated. A method for assembling such a paper cutter is also provided.

Abstract: A paper cutter having a structural safety latch includes a sheet-supporting base having a side bearing a cutting edge. A stud is joined to the base (or cutting arm) and extends laterally therefrom transversely to the cutting edge. A blade-supporting cutting arm is pivotally mounted to the base for pivotal motion in a substantially vertical plane to cut sheets overhanging the cutting edge. The cutting arm (or base) defines a recess for receiving the stud. The recess is positioned for alignment with the stud when the cutting arm is in a closed position relative to the base. In this manner, the cutting arm is vertically moveable for cutting sheet material and laterally moveable for engaging and disengaging the recess with the stud to latch and unlatch the cutting arm when in the closed position. A safety latch for a paper cutter and a method of operating such a paper cutter is also provided.

Abstract: A vertical band saw machine includes an endless band saw trained on a lower blade mounting pulley which is driven by an output shaft of a motor for sawing a workpiece placed on a worktable. A sawdust collecting member is mounted on a lower support below the worktable, and has first and second sawdust passageways with first and second intake ports disposed above and under the worktable in the vicinity of the blade. An impeller is rotatable coaxially with the lower blade mounting pulley so as to draw sawdust from the sawdust collecting member into a blower casing for discharge through a discharge port.

Abstract: A horizontal meat slicer includes a frame and a lower conveyor belt having forward and rearward ends, the lower conveyor belt operative to receive a meat product thereon and transport it into and through the device. An upper pressing conveyor belt includes forward and rearward ends, the upper pressing conveyor belt and the lower conveyor belt cooperating such that meat product is compressed between the lower conveyor belt and the upper pressing conveyor belt. At least one bandsaw blade is rotatably mounted on the frame, a cutting section of the bandsaw blade traveling between the upper belt and lower belts. Finally, at least one drive device such as a motor is operatively connected to each of the conveyor belts and the bandsaw blade to drive them to pull the meat product through the device and cut the meat product via the cutting edge of the bandsaw blade.

Abstract: A saw including a base, a trunnion pivotally attached to the base, a pivot arm pivotally attached to the trunnion, a saw assembly supported by the pivot arm, the saw assembly including a motor, a blade driven by the motor, an upper blade guard for covering an upper part of the blade, and at least one of a lower blade guard pivotally attached to the upper blade guard for covering a lower part of the blade and a rear blade guard attached to the upper blade guard, and a fence assembly comprising a fixed fence attached to the base, and a movable fence movably attached to the fixed fence, wherein the movable fence has a stepped portion for limiting lateral movement of the at least one of the lower blade guard and the rear blade guard.

Abstract: A paper cutter having a base, a first blade fixedly mounted to the base and a cutting arm pivotally mounted to the base for pivotal motion in a substantially vertical plane and supporting a second blade. The first blade has a cutting edge having a longitudinally extending burr, and is mounted to the base with the burr adjacent the base's side and extending away from the base to cooperate with the second blade for cutting. The burr-edged first blade may be positioned on the base at an angle thereto to better position the burr for acting as the cutting edge. The burr may be formed by stamping the first blade from metal sheet stock, thereby eliminating the need for traditional grinding or other processing steps, and related costs.

Abstract: The present invention is a wipe dispenser device and method for dispensing wipes. The wipe-dispensing device comprises a dispenser or container that keeps wipes isolated from the exterior of the device. The wipes are kept in the inner compartment of the dispenser or container. The top or lid of the device isolates the wipes in the inner compartment from the exterior. This top or lid also secures the container from air, and seals the interior and exterior compartments of the device. Wipes are exposed when user manually press a button on the lid or activate a sliding door which in turn shall expose the wiping surface of the wipe inside of the container. Therefore, the rest of the wipes are not exposed to the exterior, only the wipe that is in use. User may manually handle the device, expose the wipe for cleaning the desired surface, and thereafter user may pull the wipe and detach it from the device by tearing off with a cutter slot on a side of the device.

Abstract: A steel rule die for cutting cloth and synthetic materials. The cutting die includes a primary substrate and a plurality of cutting units that are removably attachable to the substrate in such a manner that they are easy to adjust, remove and replace. The cutting units include secondary substrates with lengths of steel rule attached to them. The cutting units are secured to the primary substrate. Each steel rule is fixedly attached to a secondary substrate that is substantially harder than the primary substrate. The secondary substrate distributes the cutting load applied to the rule over a large surface area on the primary substrate to prevent the cutting units from diving into the soft primary substrate. Substantially the entire length of the steel rule is supported by the secondary substrate, thereby yielding a rigid cutting unit that is not susceptible to deformation.

Abstract: The invention relates to a cutting insert for machining down workpieces. Said insert comprises several cutting edges (10), in particular for roughing work. A curved cutting corner, or a corner consisting of a large number of short, respectively linear edge sections positioned at obtuse angles in relation to one another, is positioned between neighbouring cutting edges (10). According to the invention, the cutting surface comprises a bevel (14, 15), which extends along the cutting edge (10). The section of bevel lying in the centre of the cutting edge (10) is broader than the two adjacent bevelled areas on either side, the broader bevel being between 1.5 and 4 times as broad as the breadth of the laterally adjacent bevel.

Abstract: A keyboard (25) has keys (10) mounted to pivot about a vertical axis as well as about a horizontal axis. Movement of the keys (10) about tile vertical axis is detected to adjust the sounds provided by the musical instrument resulting from striking the keys (10). Wells may be provided with a substance that is selectively solid and fluid. An electronic string instrument emulator has an electromagnetic string and a bow with ferromagnetic material. A method for performing musical instruments includes adjusting the temperament of the instrument during performance based on the music being played. A keyboard instrument may be caused to sound using suitably arrayed electromagnets.

Abstract: The PH Musical Instrument Case/Stand to carry and hold musical instrument. The case/stand is a new and very needed concept in holding and carrying the musical instrument with one (1) unit. Page 1 show the case/stand 1a the inside of the case/stand with the compartment 1a,2a,4a show the side view which is actually the case/stand setup to hold the musical instrument. Page 3 show how the case/stand can be made to carry and hold more than one (′1) instrument. Page 5 show the case/stand with the holder #4a held on the case with a locking hinge a different concept with each case/stand being custom made the customer can have their case/stand made either way. Page 6 show the larger case/stand for larger instrument like saxophones , string instruments. Page 7 show the hinge that is needed to remove the top of the case only in one (1) positions for security reasons.

Abstract: A method of music notation with 7 spaces for the notes of the C major scale, with the remaining notes of the 12 tone scale overlapping these spaces. 5 staff lines per octave can be used to show the position of the accidental notes. Distinct colors are assigned to the 12 notes of the scale. Two distinct groups of colors are used, one for coloring the C major notes, the other for coloring the remaining 5 notes of the scale. The spaces representing Cs are marked with a colored shape at the left of the staff and shaded horizontally across the page. The notes are shapes whose width is proportional to their durations. Aids are placed above and below the staff to indicate hand and finger movements. Assembly kits with visual aids are provided. The colors can be used on conventional notation.

Abstract: As it was stated earlier, the present invention has special feature of financial benefit and convenience since the sound the user recorded is played whenever the case is opened.

Abstract: A sound control apparatus is provided in a portable terminal for sounding a music tone in association with operation of the portable terminal, which is controlled by a main CPU. In the sound control apparatus, a memory memorizes music information representing a music tone and configuration information associated to a timbre of the music tone. An information acquiring section acquires the music information and the configuration information from the memory. A tone generating section is configured by the acquired configuration information to create a timbre specified by the configuration information. The tone generating section operates according to the acquired music information to generate the music tone being represented by the music information and having the specified timbre. A dedicated CPU is provided separately from the main CPU for controlling the memory, the information acquiring section and the tone generating section.

Abstract: A module combat command and control system is disclosed having a concrete layer and a plurality of abstracted layers. Various components can be interchangeably associated with the abstracted layers to form different applications, such as a terrain mapping application, a netted fires applications, and the like.

Abstract: An apparatus to neutralize landmines using high power microwaves has a blast hardened dish antenna mounted on a vehicle along with a microwave generator and power generator A waveguide from the microwave generator feeds microwaves to a feed horn for the antenna. Plugs that are transparent to microwaves are located in the waveguide to prevent the blast wave generated by a detonated landmine from propagating inside of the waveguide and damaging the microwave generator. Flexible sections in the waveguide dampen any shock wave produced by a detonated mine from traveling along the waveguide towards the microwave generator.

Abstract: An actuator connected to receive high pressure gas from a pyrotechnic initiator incorporates a primary piston and a secondary piston mounted for limited movement along cylindrical bores in a housing; the pistons are held in a fixed inactive position and are restrained from movement within the housing by a tension screw connected to the primary piston and the housing. The tension screw incorporates a calibrated reduced diameter section that ruptures at a predetermined applied force to permit the pistons to move within the housing. Gaseous products resulting from initiation are trapped and maintained within the housing by an expandable bellows secured internally of the housing at one end of the bellows and secured at the opposite end of the bellows to the interior of the housing. A calibration/test port extends through the housing into the bore externally of the bellows to permit calibration and testing of the actuator without initiating the pyrotechnic device.

Abstract: The present invention relates to firearms requiring the smooth operation of slidably engaged subassemblies for effecting projectile loading, maintenance, triggering, discharge, or reloading of a projectile. The major drawback of the prior art, such as that applying to slide-action pistols, is that friction occurs unevenly and at high levels between moving parts, which leads to damaging levels of frictive heat, wear, or warping, as well as jamming. The slidable guidance system proposed herein addresses this drawback by employing micro-rollers whose surfaces do not at any one point constantly touch the slidable gun part(s) with which they come in contact. Preferably, at least a set of micro-rollers and a pair of channels are installed in the inner sides of a slide and the upper outer sides of a gun frame, or on the lower face of a slide-housed slidable barrel and the upper face of a gun frame.

Abstract: A hydraulic piston-and-cylinder arrangement, in particular for a hydraulic clutch control for motor vehicles, has a piston to which a signal element is assigned and which is accepted movably in a longitudinal direction in a cylinder housing, at which a position sensor is secured, by means of which an axial position of the signal element and therefore of the piston in the cylinder housing can be sensed. The signal element is fitted to the piston by means of a holding cap. As a result, a hydraulic piston-and-cylinder arrangement with a device for sensing the piston position is created, in which the signal element of the sensing device, which signal element operates in conjunction with the position sensor on the cylinder housing, can be fixed in a simple manner on the piston, which also permits a sizing of the signal element largely independent of the piston geometry.

Abstract: In a wobble plate piston-drive mechanism, the inclination of the ring-shaped wobble plate is adjustable through an articulated connection of the wobble plate to the shaft by means of an axially movable guiding device and a driver arm that reaches into an engagement cavity of the wobble plate at a radial distance from the shaft to transmit the driving force from the shaft to the wobble plate. The driver arm head and/or the engagement cavity are shaped so that the force-transmitting contact between the driver arm head and the annular wobble plate is moved away from the area where the engagement cavity has its minimum wall thickness. This prevents or reduces deformation of the gliding surface of the wobble plate and thus makes the mechanism run more smoothly.

Abstract: A cylinder locking device for use in a clamp. The cylinder locking device includes a cylinder member and a first end cap on one end thereof and a second end cap on another end thereof. A piston is arranged within the cylinder member and a piston rod is engaged with the piston. The piston rod is capable of movement with respect to the piston. The cylinder rod lock device also includes a plunger contacting the second end cap. A spacer contacting the second end cap is also included in the locking device. The locking device also includes at least one locking arm contacting the spacer. The locking device also includes a mounting plate contacting the locking arm and a fastener on an opposite side thereof. The cylinder locking device will be capable of locking the cylinder in a fully retracted position and a fully engaged position.

Abstract: A device for moving an object relative to a surface, for example for pushing a bar in a bar feed mechanism, comprises a piston mounted for reciprocation within a chamber (2), and a piston rod (8) extending from one end of the chamber. Front and rear locking devices (12, 10) respectively associated with the piston rod (8) and chamber (2) are activated alternately in synchronism with the movement of the piston in opposite directions respectively in the chamber (2).

Abstract: To provide a method and an apparatus for sample injection in gas chromatography that can significantly increase the injecting volume of a sample, and can analyze any of high-boiling-point compounds, low-boiling-point compounds, and compounds decomposed by heat at a high accuracy.

Abstract: A composition comprising a cadmium oxide and a promoter, wherein at least a portion of the promoter is present as a reduced valence promoter and methods of preparing such composition are disclosed. The thus-obtained composition is employed in a desulfurization zone to remove sulfur from a hydrocarbon stream.

Abstract: The present invention provides apparatus and methods for handling fluids returning from a well. The fluids are introduced into a separator and a separated gas stream is recovered or recycled. The gas stream may comprise more than one phase. The separated gas stream is urged through a multiphase pump before it is recovered. Alternatively, the return fluids may pass through a multiphase pump before it is introduced into the separator.

Abstract: A vane-type mist eliminator is provided with pocket-like channels extending along the lengths fo the vanes. The pockets allow droplets entrained in a gas stream to impinge and cling to the vane, and then drain, without being re-entrained in the gas stream because they are protected from the gas stream by a portion of the pocket which defines the channel. The device does not increase the pressure drop when compared with a similar device lacking the pockets, and allows for a higher throughput before breakthrough occurs.

Abstract: An air-liquid separating apparatus for compressed air includes a cooling device adapted to be connected to an air source via a first transfer tube. The cooling device includes a liquid cooling tank filled with cooling agent and a cooling tube spiraled in the liquid cooling tank for condensing and separating the mist in the compressed air. An air-liquid separating tank is connected to the liquid cooling tank, wherein the compressed air is cooled and released again in the air-liquid separating tank. The air-liquid separating tank includes a backflow tube connected to the air-liquid separating tank for outputting the compressed air. The backflow tube is provided to carry the heat from the cooling device.

Abstract: A continuous process for separating a gaseous constituent from a gaseous mixture comprises continuous and concurrent steps of: (a) introducing the gaseous mixture through an entry port into an enclosed ionization chamber; (b) ionizing the gaseous mixture between oppositely charged electrodes (i.e., an anode and a cathode) of static polarity; (c) pumping the gaseous constituent out of a space between the anode and the cathode through a first passage adjoining a selected one of the anode or the cathode; and (d) pumping the balance of the gaseous mixture out of the space between the anode and cathode through a second passage adjoining the anode/cathode of opposite polarity. The ionization chamber comprises an anode and a cathode separated by a volume for containing the gaseous mixture. Ions of a gaseous constituent are drawn towards one of the anode or cathode of opposite polarity to the ions, and away from the other anode or cathode of same polarity to the ions.

Abstract: A canister for treating evaporated fuel comprises a casing which is provided with a fuel vapor inlet, a purge port and a port communicating with atmosphere and in which an adsorbent is accommodated, an air passage disposed inside the casing so as to communicate with the atmosphere communication port, the air passage having a shape for flowing the sucked air in a zigzag manner in the casing, and a filter element arranged between the air passage and the adsorbent disposed inside the casing.

Abstract: The invention relates to A food-cooking appliance comprising:

Abstract: The invention is directed to an oil treatment apparatus and method for treatment of oil which transports oil to be treated from a source through a first conduit to a treatment station. The treatment station includes a filter system capable of extracting particulate material from the oil and removing the particulate material from the filter system as it is removed from the oil. The treated oil may then be transported for reuse, preferably in a continuous cycle with the source of the oil. A prefiltering system may be used to further enhance maintaining the quality of the oil and/or in efficiently treating the oil while accommodating throughput requirements. The prefiltering system may include a comminuter to reduce the size of larger particles in the oil, a coarse filtering system to remove larger particle, a system to introduce a treatment material to the oil or other systems to facilitate processing.

Abstract: The invention relates to a food-cooking appliance comprising a cooking bowl designed to be closed by a lid (7) in substantially airtight manner during cooking, heater means, and odor treatment means (10) for treating the cooking odors, which means discharge the treated stream of air to the outside of the appliance via at least one opening (20), said food-cooking appliance being characterized in that it includes cooling means (21) designed to generate a cooling stream directed to sweep across the opening (20).

Abstract: The device for triturating and extracting juice or pulp from food produce is used in particular in the food preserves industry for triturating and subsequently separating the juice or pulp from fruit or vegetables, in particular in a cold-working process.

Abstract: A manufacturing cell for work pieces, comprising automated manipulating means for transfers of a work piece, which are arranged to grip the work piece, to place the work piece in a machining device and to deliver the machined work piece; transfer means which are arranged to transfer said manipulating means to and from storage locations and the machining device; positioning means, wherein said manipulating means are arranged to deliver the work piece to said positioning means for setting the position of the work piece and to grip it again after the setting. The positioning means are, together with the manipulating means, placed in said transfer means, or the positioning means are placed in separate transfer means, which are arranged to move said positioning means within the reach of the manipulating means at least for the time of said setting. Furthermore, said manipulating means, transfer means and positioning means form a transfer and manipulating apparatus for work pieces and for various functions.

Abstract: Arrangement of several presses having in each case at least one flywheel and in each case at least one shaft drive acting upon a shaft. The at least one shaft drive of each press, respectively, and its at least one flywheel, respectively, are mutually synchronized.

Abstract: An apparatus for treating material, such as lignocellulose material, fibrous material, particulate material, cellulosic material, and the like. The apparatus includes a feed system, a reactor, a conveyor, and a discharge system. The feed system has an inlet for receiving the material from a supply source at ambient pressure conditions and an outlet for releasing the material. The reactor is used for treating the material and has an inlet connected to the outlet of the feed system for receiving the material released from the feed system, and an outlet for releasing the material treated by the reactor. The conveyor is located inside the reactor for conveying the material from the inlet of the reactor to the outlet thereof. The discharge system is used for discharging the material and has a chamber and a pump. The chamber has an inlet connected to the outlet of the reactor for receiving the material treated by the reactor, and an outlet.

Abstract: A method for producing a custom rubber stamp member which utilizes either an etching/mold making process, or a method of additively drawing 3-D casting material directly to a rubber-like base. The “stamp unit” referred to below embodies one of two configurations—either a malleable substance which is readily etched into, or a rubber-like substance which will have cast making material superficially applied to it.

Abstract: A self-inking stamp with overhead inking, with a lower component (1) for placement on the surface to be stamped, with a swivel mechanism (10) for a print platen support arranged in the lower component for swiveling reciprocal movement of a print platen support (11) between a stamp pad (4) and a support frame (13), and with an actuator upper component (2) mounted for slideable movement against the bias of a spring relative to the lower component, the upper component straddling the lower component and connected by its lateral parts to the lower component by a print platen support swivel axle (11′) guided in elongated openings (12) of the lower component, whereby the actuator upper component is provided with a substantially U-shaped body portion (2′) and a hood part (7) of transparent material pivotally connected therewith and covering an oblique text receiving plate (6) at the upper transverse member of the body portion and the open fron section of the body portion, and whereby the lower component i

Abstract: The invention relates to a data carrier printed by line intaglio having a halftone image represented by irregular line structures in the manner of an engraving. The line structures are superimposed at least partly by fine structures rendered in positive and/or negative representation.

Abstract: Presented is a reusable printing form including a printing area that has a metal oxide surface, in particular a native oxidized titanium surface, which is treated with at least one amphiphilic organic compound whose polar region has an acidic character. In an advantageous embodiment, n-heptadecanyl hydroxamic acid {CH3—(CH2)16—C(O)—NH—OH} and/or n-octadecanyl phosphonic acid {CH3—(CH2)17—P(O)—(OH)2} is used. Also described is a method for imaging a reusable printing form. The reusable printing form can be used for offset printing.

Abstract: A chemically inflated gas bag for mining is provided. This gas bag includes a modified PVA bag that contains sodium bicarbonate and an HDPE bag that contains acetic acid. The PVA bag and the HDPE bag are contained within a nylon/PE bag. Preferably, when the HDPE bag is broken, the flow of acetic acid onto the PVA bag is controlled by a second bag having small holes therein surrounding the HDPE bag, allowing the gas bag to be lowered into a borehole before it inflates. Another aspect of the present invention is a method of making this gas bag. This method includes pouring diluted acetic acid into an HDPE bag, putting sodium bicarbonate into a PVA bag, sealing these bags, and placing these bags within a nylon/PE bag. The gas bag is folded in such a manner as to easily inflate and completely seal the borehole.

Abstract: A novel concept for a projectile primarily suited for supersonic flight, such as a bullet, a shell, or a rocket. The configuration incorporates the model of the natural wave behavior. The leading edge of the projectile has a sharp tip which merges smoothly into a cylindrical body. The merging segment from the tip to the cylinder may be defined with a tangent function. The rounding of the surfaces promote proper fluid sheet formation along the surface and to reduce undesirable vortice formation and thus to reduce the value of several drag factors.

Abstract: A novel concept for a hydrodynamically and aerodynamically improved leading edge and trailing edge structure is primarily suited for high-speed motion, such as near Mach 1 and above, but also for slow-speed motion and for stationary operation, where stationary structures are subjected to fluid flow. The configuration incorporates the model of the natural wave behavior. The leading edge of the aircraft, of the train, of the submarine, or the like, has a sharp tip which merges smoothly into a cylindrical or rectangular body. The merging segment from the tip to the cylinder may be defined with a tangent function. The rounding of the surfaces promote proper fluid sheet formation along the surface and to reduce undesirable vortice formation and thus to reduce the value of several drag factors.

Abstract: A safety rail system (1) which can be installed on a sloping roof (42) and provides a continuous rail to which a safety rail traveller (62) and associated safety line may be attached comprises one or more longitudinal base units (10) of substantially uniform cross section adapted to be fixed to the surface of a building, and one or more longitudinal rail units (30) of substantially uniform cross section adapted to allow the attachment of a safety rail traveller (62). The base units (10) and rail units (30) are provided with corresponding male and female continuous key portions (12, 36) to permit a base unit and a rail unit to interlockingly engage by longitudinal sliding action.

Abstract: A rail road car has a deck for carrying wheeled vehicles. The rail road car can be coupled to other rail road cars of the same type. Bridge plates are provide that permit wheeled vehicles to be conducted between adjacent rail road cars. The bridge plates have one end mounted to the rail road car at a pivot fitting. The pivot fitting allows the bridge plate to be moved from a length-wise position spanning the gap between cars, to a cross-wise stowed position. The bridge plates have fittings which permit three degrees of freedom relative to the adjacent rail road cars, namely a first degree of freedom to tolerate yawing motion of the first rail road car, a second degree of freedom to accommodate yawing motion of the second rail road car, and a third degree of freedom to accommodate variation in distance between the respective portions of the rail road cars to which the bridge plate is mounted while the rail road cars are moving.

Abstract: Processes for preparing modified pigments are described. In one embodiment, the process comprises the step of combining, in any order, a pigment having attached an electrophilic group and a thiol reagent comprising at least one —SH group and at least two ionic or ionizable groups. In a second embodiment, the process comprises the step of combining, in any order, a pigment having attached an electrophilic group and a thiopolymer comprising at least one —H group. Modified pigments are also described.

Abstract: A polymer comprising the addition reaction product of a polyisocyanate having a functionality of from 2 to 10 and a succinylpolyether having a C6-30-alk(en)yl group and at least one group which is capable of reacting with the polyisocyanate and where the number of recurring ethyleneoxy groups in the polyether is from 4 to 800