Abstract: The present invention relates to trypsin variants with improved enzymatic properties, and particularly relates to a mutated trypsin comprising an amino acid substitution at least at two amino acid positions leading to an increased affinity for the nucleophilic substrate and/or at least at two amino acid positions leading to a reduced hydrolysis activity.

Abstract: Connector assemblies are disclosed. The connector assembly (1) comprises a base body (2) having a surface (2a, 2b) and a front face (6) located in the direction of insertion, the base body having at least one contact tongue, each contact tongue having a connecting contact face (5) to form an electrical contact with a corresponding connector assembly. The connector assembly (1) further having at least one contact pocket (3) with a contact bottom (4), wherein the contact bottom (4) rises with respect to the surface (2a, 2b) of the base body (2), the contact pocket (3) having at least one opening (10).

Abstract: A towing head is provided including three primary members. The first member is stationary and includes a channel which receives the tow pin or towing fitting of an aircraft. The second member pivotally attaches to the first member and itself includes a channel which communicates with the channel of the first member. The third member rotatably attaches to the second member and includes a handle for which to place the towing head in either a locked, partially locked, or unlocked position. In the unlocked position, the second member is moved away from interfering with the channel of the first member so that the tow pin or fitting may be freely inserted or removed from within the channel of the first member. In the locked position, the second member is moved to a position so that it interferes with the channel of the first member and prevents the tow pin from being removed from the towing head.

Abstract: An easily removable and reusable cable strain relief device for accommodating and fastening a cable in a socket hole in an instrument wall. The head section (2) has a collar (3) which lies flush against the outer edge of the socket hole (8) and a shaft (4) with U-shaped catch lugs (5) and (6) engaging the inner edge of the socket hole (8) and pressing against the cable (14). Cable lug (5) is externally accessible for pivoting so as to disengage the device from the socket hole.

Abstract: An improvement for a cable terminal which includes a terminal carrier 1 and a terminal clamp 12 tracked in the carrier where a flexible locking tooth 8 on the terminal carrier 1 works in conjunction with a toothed rack 24 on the terminal clamp 12. In this improvement the terminal carrier 1 is in the form of a hollow cylinder or cuboid whose upper edge includes two opposed grooves 2, 3 to accommodate a cable, and the terminal clamp 12 includes a clamping rib 19, 20, 19a, 20a which acts on the cable from above and/or laterally, centrally to the grooves, and which can be axially displaced and locked.

Abstract: A system is provided for connecting a suppressor for eliminating interference from electrical appliances. The system comprises an electrical box provided with a fitting for receiving a suppressor. The suppressor includes a plurality of angularly spaced contact arms. Terminal bodies which define terminal spaces for receiving conductor ends are disposed around the fitting. Terminal screws are provided at the terminal bodies. To electrically connect the suppressor to the conductor ends, the suppressor is inserted into the fitting and then rotated until the contact arms overlie the terminal bodies. The terminal screws are then tightened to simultaneously clamp the conductor ends within the terminal spaces and to clamp the contact arms between heads of the terminal screws and backs of the terminal bodies.

Abstract: The invention relates to a mains connection box for electrical machines and appliances, on the bottom or base plate of which there are chambers to accommodate connecting terminals for the wires of the connection cable and which can be covered by a cover. A suppressor filter is supported and contracted directly on the box or on its bottom plate. For this purpose, the mains connection box or its bottom plate comprises a mount or support for a radio suppressor filter and contacts for connecting the contacts of the suppressor filter to the wires of the connecting cable.

Abstract: The invention relates to an electrical connecting clamp for connecting an electric conductor to an electrical device. The clamp has a substantially U-shaped body having a midsection to which conductor can be connected by means of a clamping screw. One arm of the body ends in an insertable blade. A resilient contact element is formed on the other arm for contact with an insertable blade or a pin. Such a resilient contact element can be provided by forming the other arm with an opening and providing bevelled lead-in parts extending in the direction of insertion.

Abstract: An apparatus for removing the sprue from an injection mold, having a cylinder and an associated piston rod, in which the piston rod extends between the two halves of the mold into the runner when the injection mold is closed. Molding material is molded around the forward end of the piston rod during the injection. Upon opening of the mold the sprue fixedly carried by the forward end is removed by movement of the piston rod into the cylinder.

Abstract: This invention relates to a tension-relieving cable duct consisting of tough, hard plastic material and comprising a substantially platelike head portion (a head plate) and a hollow shank, which is integrally molded with the head plate, and gripping jaws, which in response to an angular movement of about 90 degrees cooperate with a non-circular through opening, which is formed in a wall of an appliance and contains the duct.

Abstract: A cable socket adapted to be mounted in an opening formed in a housing wall for providing traction relief for a cable passing therethrough includes a tubular grommet insertable in the housing wall opening and an inner socket portion coaxially situated within the tubular grommet so as to be twistable therein around the common axis, the inner portion having a passage opening for receiving a cable and including a flexible extension for encompassing a cable passing through the passage opening, the flexible extension having a free end region, and a device for securing the free end region of the flexible extension of the inner socket portion to the tubular grommet so that it is prevented from twisting with respect to the grommet when the inner socket portion is twisted within the grommet.

Abstract: A cable strain relief for mounting in a supporting wall aperture or the like is provided comprising a grommet and a rotatable clamping means received in said grommet. The grommet and clamping means have aligned cable-receiving passageways. The clamping means includes a flexible clamping band detachably anchored at a distal end to the grommet, and a movable, opposed proximal end integral with said clamping means which is rotatable by said clamping means about the periphery of a cable passing through said grommet and clamping means. In a modified construction two clamping bands each of which has axially offset, opposed portions are provided which simultaneously engage the cable periphery when actuated by the clamping means.

Abstract: A grommet for relieving tension or strain when securing a cable in an aperture comprising two generally circular in cross section, tubular rotatably and coaxially disposed telescoping clamping members with the inner cross section of the outer member deviating from the circular cross section and with the inner member being slotted at one of its ends, in an axial direction over part of its length to form clamping jaws having rising or tapering projections thereon disposed within said outer member and which cause the clamping jaws to engage and lock the cable when the members are rotated relative to each other.

Abstract: The invention relates to an insulation for flat connectors comprising a plastic housing shaped as one piece including embedding and insertion openings and a hinged lid for closing the embedding opening, wherein said embedding opening is provided in a side wall of said housing, as seen in the insertion direction, and said lid is hinged near said embedding opening via a hinge frame and may be rotated to close said insertion opening and be arrested by one or a plurality of latches.

Abstract: Spring contact element comprising a metal spring leaf for mechanically fastening and electrically connecting it to the end of a cable and a contact spring to provide a plug-in connection with a counter contact element wherein said contact spring includes a base leg attached to the fastening means and passing, at the plug-in end of said spring contact element, via a bend having a predetermined bending radius, into a free end leg describing an acute angle with the base leg, and an insulating case for such spring contact element wherein a first contact chamber to receive said spring contact element through an opening in a first front side and a second contact chamber to receive said counter contact element from the second front side facing said first front side are provided and the broadside of the cross section of said second second contact chamber is twisted about 90.degree.

Abstract: A cable grommet with tension or strain relief for the securement of cables in the aperture of a housing comprising two tubularly shaped and coaxially telescoped clamping portions being twistable towards each other, and the inner cross section of the outer portion, which is to be inserted into the aperture of the housing, deviates from the concentric circular cross section and the inner portion being coaxially inserted into the outer portion is divided, on one of its ends, by slots extending in axial direction over part of its length to form clamping jaws which on the outer side thereof, at least partly, are provided with circumferentially extending rising or tapering projections sliding on the inner wall of said outer portion and which when the two portions are twisted towards each other press the clamping jaws against the cable guided in said inner portion.

Abstract: The invention relates to a cable grommet with a traction relief particularly for guiding a cable through the opening of an apparatus wall or the like comprising a funnel body having a thoroughfare for said cable, shoulders extending into said opening of said apparatus wall, a setscrew arranged within said funnel body under an angle relative to the axis of the thoroughfare reacting via an intermediate piece upon said cable, wherein a shoulder is provided which is connected with said funnel body and extends from the side of said setscrew into said opening and a further shoulder is provided which is connected with said funnel body and supports said cable on the other side of said opening.

Abstract: Electric connector comprising a U-shaped main portion the parallel legs of which are respectively formed with two intermediate cutout portions facing each other, a preferably square nut penetrating through these cutout portions, and a terminal screw inserted therein the head of which has a diameter greater than the distance between the two legs and at the end of each leg, distant from the transverse base of the main portion above each of the intermediate cutout portions, an additional cutout being provided for receiving the head of the terminal screw, and between the legs a leaf spring being arranged, wherein the height of each of the intermediate cutout portions provided for the nut is greater than the thickness of the nut and of the spring, the leaf spring being convexly curved in the longitudinal direction, including a central hole and being arranged between said nut and edges of the intermediate cutout portions distant from the base.

Abstract: A strain-relief bushing for cables, wires and the like has a body formed with an internal passage through which a cable or the like is adapted to extend, and which is bounded by a surface. A pressure exerting element exerts pressure upon the cable in the passage in a direction including an acute angle with the elongation of the passage and serves to press the cable against a portion of the aforementioned surface.

Abstract: A punched strip of electrically conductive sheet material from which a plurality of springy contacts can be cut. These springy contacts each include along the strip a portion for forming a claw to engage insulation around a conductor with the latter portion being followed by a portion for forming a claw to engage the conductor itself. This latter portion is then followed by a base portion which terminates in an end region, and between the latter end region and the portion to form the conductor-engaging claw, the base portion has a pair of elongated portions for forming springy contact arms. The pair of elongated portions diverge and define between themselves where they are located closest to each other a space in which the end region of the base portion is located while where the pair of elongated portions are most distant from each other they define between themselves a space which receives at least that portion of the next contact which will form an insulation-engaging claw for the next contact.