Abstract: A ski includes at least two sections interconnectible end-to-end, one section having a recess sunk in an end portion thereof and the other ski section having a tongue projecting from an end portion thereof, the recess and tongue shaped to closely interfit when the ski sections are assembled, end-to-end, thereby to provide a full length ski, there being structure to positively and releasably interconnect said end portions in assembled condition.

Abstract: An adaptor structure for connecting a plurality of beverage cans together in selected configurations comprising a base plate with connector members on a first side thereof, a can-receiving socket on the opposite side thereof and spacer members within said socket. The cans have end recesses in which the spacer members seat when an adaptor is coupled to a can to form a strong, stable connection. Cans are assembled end-to-end with back-to-back adaptors at the end interfaces, the adaptors being connected to each other by the connector members.

Abstract: A coupling device for interconnecting a drive shaft and a driven shaft which is maintained under fluid pressure to provide a tensile preload and which is specifically adapted for utilization with hydromechanical or electrohydraulic servovalves.

Abstract: A coupling for connecting the end of the camshaft of an internal combustion engine to the drive shaft of an ignition distributor. The coupling comprises a drive coupling member that is fixed to the drive shaft of the ignition distributor. The coupling member has a pair of axially extending lugs that have surfaces that engage surfaces formed on a pair of lugs that extend axially from the end of the camshaft. A spring member is fixed to the coupling member which has a pair of curved spring portions that engage other surfaces on the camshaft lugs and which serve to prevent backlash between the shafts.

Abstract: Structure for connecting two members together, each including parallel, spaced apart, oppositely disposed, opposed surfaces having a cross section including a short straight portion adjacent one edge thereof, a longer obliquely extending portion extending from the other edge thereof and merging with an arcuate connecting portion which intersects the shorter straight portion, which surfaces are complementary and arranged to be in engagement with the members assembled. In one modification of the invention, the oblique portion of the surface cross section starts prior to the plane of the short straight line portion of the cross section and crosses it prior to merging with the connecting portion of the cross section.

Abstract: A continuous length of reinforced plastic ribbon rod is wound on a reel and replaces a conventional oil well sucker rod formed of long sections of steel rods. The reinforced plastic has a high modulus of elasticity, is sufficiently stiff for use in pumping, and has enough flexibility to be wound onto a reel or drum. The reel of ribbon rod is positioned above oil well tubing and the ribbon rod, with an oil pump attached to its free end, is fed into the tubing and lowered to the bottom of the well. The ribbon rod is secured to a surface pumping means, and reciprocating motion is transmitted to the oil pump through the ribbon rod.

Abstract: A chain link has two U-shaped portions designed to interfit to provide a complete link. An end of each of the portions is connected to that of the other portion by a twisting advance. The other end of each portion is designed to provide abutting faces which are juxtaposed after each twisting advance. Attaching means connect the abutting faces to prevent removal in the reverse pattern to such twisting advance.

Abstract: The disclosure is of means for connecting two bodies in abutting surface-to-surface relation by means of interfitting hooks and recesses, upon relative movement of the surfaces with respect to each other.

Abstract: A garage door operator is disclosed which has a motor-driven screw nearly enclosed within a guide, and a partial nut is guided by this guide means and moved longitudinally therealong by engagement with the rotating screw. The partial nut is adapted to be connected to a garage door to open and close the same. In order to shorten the package in which the garage door opener is shipped, the screw and guide means are in two or more parts and adapted to be coupled together to make an operative long screw and an operative long guide means. The screw parts, instead of being connected together at the factory by a double pivot connection, are shipped to the customer in a disconnected condition but one in which the coupling readily may be connected in a proper phase to avoid mismatch of the threads.

Abstract: A quick coupling device for use in cold environments such as the Arctic to joint two shafts in an end-to-end relation which comprises a first hollow cylindrical body on one shaft end which has a cut out portion and carries a hollow, internally threaded stud opposite the cut out portion, and a second hollow cylindrical body carried by the other shaft end which has a corresponding cut out portion so that the first and second bodies can be mated together to form a continuous cylindrical body from one shaft end to the other shaft end, the second cylindrical body having a plate across the cut out portion with an aperture therein which aperture registers with the open end of the stud means when the first and second cylindrical bodies are mated whereby a threaded pin means can then be screwed into the stud means from outside the first cylindrical body and said pin means will extend through said stud means and into the plate aperture to physically join the first and second cylindrical bodies and, therefore, the two s

Abstract: A flexible pipe adapted for connection in a drill string, having sufficient wall thickness in order to withstand forces imposed by drilling a well. The flexible pipe has a plurality of improved, essentially circumferential cuts, each cut being through the wall thickness of the pipe. The cuts provide a pipe having a plurality of dovetail teeth and complimentary recesses on each end of the intermediate segments. The teeth on one segment are positioned in the recesses and interlocking with the teeth of the adjacent segment. Each side of each tooth consists of two reversed, intersecting semicircles. The tooth and recess interlock has sufficient clearance to form a joint which has limited relative movement in any direction between the segments.

Abstract: An elongated, integrally-formed member simulating natural wood bark along one surface is provided with snap-fit interlock means for interconnecting, both longitudinally and laterally, with one or more like members for selectively increasing length and/or cross-sectional size to best accommodate the height and size of one or more vine or vinelike climbing plants to be supported. Each member is of arcuate cross-sectional shape to simulate natural wood bark board strips, and is adapted to lateral inter-fitting connection with one, two or three additional members for selective increase in cross-sectional size as required.

Abstract: A prefabricated composable duct element for piping aeriform fluids in general and for use in erecting concrete casting boxes is provided. The duct element may be connected to further duct elements to constitute conventional ducts such as straights of various lengths, bend or elbows, multi-way unions, cap elements for closing heads and the like. All such elements are provided at each end thereof with joint connection means each including at least one male part and at least one female part for the coupling thereof with any adjoining one of said elements.

Abstract: A hanger for a bicycle reflector so as to maintain the reflective face of the reflector in a generally vertical position and which includes means that prevent the reflector from being incorrectly mounted on the bicycle.

Abstract: A member which when disposed in a plane in abutting relationship with a plurality of other members defines a planar surface which will remain flat when pressure is applied along the thickness from two opposed directions. The member takes the form of a body having upper and lower flat parallel main faces joined by six curved side faces disposed end to end defining and endless closed path. The upper main face has a periphery of six sections disposed end to end, these sections defining like arcs with like radii of curvature but being alternately convex and concave. The lower main face identical to the upper main but is rotated through 60.degree. of arc with respect thereto to insure that the end points of each concave arc section of either main face are vertically aligned with the corresponding end points of the corresponding convex arc section of the other main face.