An indoor plant growing apparatus includes a hood disposed above an open-top plant receptacle for plants and a soilless medium. The hood contains optional lighting to provide illumination for a growing plant. A water reservoir is disposed below the plant receptacle and a wick is provided near the base of the container to draw liquid such as water and nutrients to plant materials with the receptacle. A dispensing bottle provides a metered discharge of fluid into the reservoir, thus extending the ...

Pulley, in particular suitable for application in a continuously variable transmission, in which an endless belt can be fitted between the discs of the pulleys, the path of which endless belt can be influenced by a cylinder/piston device. The cylinder/piston device is provided with at least one pressure chamber provided with walls, one of the walls being provided with a resilient hinge, as a result of which elastic expansion of the wall around the hinge is achieved at relatively high pressures i...

An automatic closed loop drilling system is disclosed for providing automatic directional drilling capabilities in a bottomhole assembly. The drilling system includes at least one adjustable stabilizer that varies in response to formational and drilling conditions encountered downhole. A microcontroller is preprogrammed with a desired range of formation characteristics or with a desired inclination or target area. The microcontroller compares actual sensed data with the desired data and adjusts ...

A laser positioning and measuring system for an earth boring apparatus is disclosed which includes a unique measuring unit comprising a pair of lasers mounted in a back-to-back relation with targets at their free ends. The targets include a beam passage through which laser beams from the measuring units are emitted. The emitted laser beams strike a target on an adjacent measuring unit. The area of which the laser beam impinges upon the adjacent targets generates a signal to indicate the displace...

A sheave is provided with a compliant contact surface such that the sheave is suitable for use with a leaf chain in applications in which the leaf chain is subjected to more than simply a straight tensile pull. Since the sheave contact surface is compliant, any chain leaves that protrude inwardly against the sheave will embed themselves, thus allowing any non-protruding leaf edges to come into contact with the sheave and share the load. In a preferred embodiment, compliancy of the contact surfac...

A bridge structure is provided for short bridges spans of eighty feet or less in length and includes a series of girders consisting of flanged steel beams. The girders are maintained in place by lateral braces which hold the girders with a series of tie rods or bolts affixed thereto. In one embodiment the lateral braces are formed with top and bottom steel members of relatively small size and which are notched to help maintain the girders in position. Side rail posts are affixed at the ends of t...

A tray having several hollow, frustro conical shaped portions for supporting pots having plants. Such tray has several openings near the edge of the tray to allow the tray to be carried while the pots having plants are positioned in the tray. A raised support is positioned in the bottom of each hollow, frustro conical shaped portions to allow the pot in each of such portions to be slightly elevated so that water can be contained and fed to each plant through the bottom of each pot holding a plan...

The invention relates to a device for carrying out measuring and/or servicing operations in a well (4), comprising a tubing (2) adapted for being coiled round a drum (1) and a measuring instrument (3) fastened to the end of the tubing. The tubing comprises inwardly a rod (17) elastic in flexure and resisting to compressive stress, well suited for allowing the introduction thereof into tubing (2), notably by thrust. An energy or information transfer line (12) is incorporated during manufacturing ...

A new and improved protection apparatus is provided for a plant pot. The protection apparatus is installed in the plant pot which contains a quantity of soil and a plant therein. The protection apparatus includes a planar base member and an array of ridge portions that project upward from the planar base member. The ridge portions are arrayed on the planar base member in an alternating arrangement of planar base member portions and ridge portions. A plurality of apertures is located in the plana...

An apparatus and method for removing fish from a well, said apparatus including a top sub with upper and lower ends, the upper end adapted to be connected to a drill string, a grapple sleeve connected to the lower end of the top sub and a grapple, which in the preferred embodiment incorporates grapple fingers so as to externally engage and grasp a fish in a well slidably mounted within the grapple sleeve. The grapple is mounted to the top sub and extends out of and into the grapple sleeve such t...