Abstract: A self-priming centrifugal pump comprises a centrifugal impeller (19) arranged in a pumping chamber (9) for transferring liquid from an inlet (5) to an outlet (7) of the chamber, a diaphragm (21) arranged downstream of the impeller for providing priming, and a drive means (25) for driving the diaphragm with reciprocating motion during priming. The diaphragm and the drive means are arranged so that a pressure increase downstream of the impeller after priming causes a change in the neutral position of the diaphragm, which then causes disengagement of the drive means. The drive means may comprises a cam and cam follower arrangement or a crank and connecting arm arrangement.
Abstract: A compact electrical connector has first contacts (32) with a first characteristic impedance (50 ohms) and second contacts (34) with a second characteristic impedance (100 ohms), with each set of contacts having a separate electrical ground (G1, G2). The first contacts lie in passages of a first insulative holder (24), with the first contacts arranged in three rows (62, 64, 66) wherein the middle row is offset from the top and bottom rows to maintain a constant contact spacing. The second contacts (34) lie in two vertically elongated insulative holders (26, 28) that each lies at one end of the first holder, with each holder having a grounded second contact (56) and with each holder projecting into a recess (84) at the end of the frame that receives the first holder.
Abstract: An electrical connector comprises a dielectric spacing element having elongate through holes and a forward end surface; a plurality of parallel, elongate conductive contacts arranged in respective through holes of the spacing element, the conductive contacts providing electrical connections; an outer body arranged about the spacing element and the conductive contacts, the outer body having a longitudinal position fixed relative to the dielectric spacing element and having a forward end for engagement with a mating connector; and a collar slidably mounted about the outer body. The collar has an engagement position in which a forward surface of the collar is positioned in front of the forward end of the outer body for mechanically coupling the connector with the mating connector and a retracted position in which the forward surface of the collar is positioned behind the forward end surface of the spacing element for cleaning access to the conductive contacts.
Abstract: A connector system includes first and second mateable connectors (12, 14) with coaxial contacts, wherein the first connector has movable center and outer contacts (20, 22) that are each biased forward by a separate spring (24, 26) to engage stationary contact pads (34, 36) of the mating second connector. A stationary tubular insulator (100) surrounds much of the movable center contact, and a stationary sheet metal shield (102) lies around the tubular insulator and within the outer contact. The front end of the movable outer contact forms an internal flange (80) with a hole (84) that allows the front end of the movable center contact to pass through. The shield front-end has an internal flange (112) that lies between the front end of the tubular insulator and the movable outer contact internal flange, to maintain a constant impedance through out the first connector.
Abstract: An electrically conductive connector housing body (16, 17) of aluminum or an aluminum compound, and a surface layer on the aluminum which comprises an adhesive layer in the form of a chemical nickel-plating, a corrosion protection layer, and a metallic passivation layer provided in sequence. In order to avoid the use of toxic metals and their compounds in a housing part of this type and nevertheless to assure sufficient conductivity and corrosion resistance, the corrosion protection layer is formed by a zinc-cobalt-iron compound, the passivation layer is constituted by a compound made of trivalent chromium, and a sealing layer made of an inorganic compound containing silicate is applied as the exterior layer.
Abstract: A rotary lobe pump comprises a pump body having a driving means and an outer casing, and an insert that can be replaced. The replaceable insert comprises a housing formed of a plastic material and having an inlet port, an outlet port and internal surfaces defining a pumping chamber. The replaceable insert also includes a pair of lobed rotors arranged for rotation within the pumping chamber. The housing includes apertures through which the lobed rotors may be rotationally driven, so that the lobed rotors mesh together for pumping a fluid from the inlet port to the outlet port.
Abstract: A mechanism of low cost and easy mounting, provides resistance to rotation of a coupling nut (14) of an electrical connector about the barrel (12) of the connector, and provides a higher resistance to rotation in one direction (U) than the opposite direction (M). A toothed ring (44) with a circle of teeth, is fixed to the barrel. The mechanism includes a washer (42) with projections (70, 72) that engage the teeth of the ring to ride over them during nut rotation, and thereby provide resistance to nut rotation. The washer is bent to form a spring to bias its projections against the teeth of the toothed ring. The washer also has ears (75, 76) that fit into slots in the nut to prevent washer rotation relative to the nut. The teeth of the toothed ring have first sides that are steeper than its second sides to provide higher resistance to rotation in one direction.
Abstract: A battery holder frame (12) that facilitates the removal of a fully installed battery (30) (electrical cell). The frame has top (20), bottom (22), opposite side (24, 26), and back walls (28) that form a cavity (14) that receives a battery by moving the battery rearward into the cavity until the battery abuts the back wall. The back wall upper portion has a bottom edge (66) and leaves an opening (62) below the bottom edge through which the bottom of the battery can move rearward out of the cavity. To remove a fully installed battery, the battery bottom is pushed rearward to cause the battery to pivot so its upper portion (152) moves forward out of the cavity and can be grasped to pull the battery out of the cavity.
July 16, 2007
Date of Patent:
November 16, 2010
ITT Manufacturing Enterprises, Inc.
Douglas Reid Gastineau, Michael Santos Finena, Robbie Lee Gray
Abstract: A plug connector (11, 12), having a body (13, 16) with boreholes containing contacts (14, 15), and a detent (23-26) that protrudes into the boreholes (21, 22) behind a contact collar (65). To make possible the locking insertion of not only thicker and therefore relatively stiff cables but also of such thin cables, for example those that are braided, which due to their relatively small cross section easily buckle when stressed in the sliding longitudinal direction, it is provided that the detent (23-26) can be inserted into the borehole (21, 22) in two successive positions, whereby in the first, preliminary locking position, the deflection resistance of the detent (23, 26) is smaller than it is when bringing the plug contact (14, 13) into the second, and final locking position.
Abstract: A connector arrangement comprises a rigid inner conductor (107), a dielectric sleeve (111) arranged around the inner conductor and a rigid outer conductor (109) arranged around the sleeve. A surface of at least one of the inner conductor, the sleeve and the outer conductor is provided with a taper, such that the sleeve fixes the relative transverse positions of the inner and outer conductors at a first end of the arrangement and not at a second end of the arrangement. The inner conductor is longitudinally slidable relative to the outer conductor. Such an arrangement is suitable for use in hostile environments, such as in high temperature pipelines, in which there are large temperature variations and in which the positional variation of mating connectors is high.
Abstract: Ground connections are made between first and second electrical connectors (1, 27). The first connector has a first sleeve (5) and has contact elements (23) mounted on the first sleeve. The second connector has a second sleeve (31) with slots (35) that receive the contact elements (23) when the connectors mate. Locating ribs (21) lie forward (F1) of the contact elements to align the slots in the second sleeve with the contact elements.
Abstract: A connector that has a coupling nut (14) that is rotatable about a barrel (12), with an annular space (42) between them, and with a resistance ring (40) lying in the annular space. The resistance ring allows the nut to rotate with moderate friction in a mating direction M, and provides higher resistance to nut rotation in an unmating direction U. The resistance ring is formed from a metal band with primarily straight band sections (60, 62, 64, 66) that alternately extend at inward and outward inclines from the circumference direction C. As a result, the resistance ring zig-zags by alternately engaging the nut surface (52) that faces the annular space, then the barrel surface (50) that faces the annular space, etc. Some of the radially outer ends of the straight sections are bent into small half circles (67) that fit into corresponding slots (68) in the nut to fix the resistance ring relative to the nut.
Abstract: An electrical connecting device for two electrical components which, when assembled, have electrical contact areas facing each other. The electrical connecting device comprises: a plurality of metallic connecting elements, each connecting element having first and second contact portions resiliently compressible against each other; and a flexible dielectric carrier sheet for the connecting elements, a portion of each connecting element being attached to the carrier sheet. Each connecting element comprises a strip of material having a bend at an intermediate portion. In the device, the connecting elements are resiliently compressible against each other, independent of any supporting structure. A rigid supporting structure is accordingly not required.
Abstract: Coaxial contacts of a second connector (14) are in the form of static pads (34, 36), while coax contacts of a first connector (12) are in the form of spring contacts (40, 42) with pins (52) that engage the static pads. The first connector includes a coax center spring contact (40) positioned to engage a center static pad (34) of the second connector, and the first connector includes a plurality of outer coax spring contacts (42A, 42B, 42C, 42D) positioned to engage the outer static pad (36) of the second connector. When fully mated, a static pad region (90) on the first connector lies facewise adjacent to the outer static pad. The connectors are constructed to mate by pivoting the first connector against the second one, to assure that an outer coax spring contact makes engagement before the center spring contact makes engagement.
Abstract: A connector system wherein a first connector (12) has a pair of latches (34, 36) that can be depressed to release them from a pair of strikes (30, 32) of a mating second connector (14). A retainer (60) is provided that prevents accidental release of the latches. The retainer has blocking parts (70) that move under the latches when the retainer is slid to a forward blocking position. The first connector has a pair of radially-projecting pins (84) at its laterally opposite sides, and the retainer has a pair of forwardly-projecting arms (80, 82) with slots (90) that each receives one of the pins. Each slot has a constriction (104) that resists sliding of the retainer away from its forward or rearward position.