Abstract: Embodiments of the present invention provide a novel solution for preventing pinch flats and installation flats incurred by an inner tube as a result of the wheel striking an object. Embodiments are directed to an inner tube protector that fits within a tire and provides mechanical protection to the inner tube against tire strikes. Embodiments may include an inner region adapted to support an inner tube installed around a rim of a wheel. Additionally, embodiments may include an outer region adapted for insertion within and against the rim lip of the rim which provide protection to the inner tube responsive to the wheel striking an object. As such, embodiments may be positioned between the rim and inner tube in a manner that dulls an edge of the rim lip and, thereby, provides protection to the inner tube when compressed against the otherwise sharp edges of the rim lip.

Abstract: Embodiments of the present invention provide a novel solution for preventing pinch flats and installation flats incurred by an inner tube as a result of the wheel striking an object. Embodiments are directed to an inner tube protector that fits within a tire and provides mechanical protection to the inner tube against tire strikes. Embodiments may include an inner region adapted to support an inner tube installed around a rim of a wheel. Additionally, embodiments may include an outer region adapted for insertion within and against the rim lip of the rim which provide protection to the inner tube responsive to the wheel striking an object. As such, embodiments may be positioned between the rim and inner tube in a manner that dulls an edge of the rim lip and, thereby, provides protection to the inner tube when compressed against the otherwise sharp edges of the rim lip.

Abstract: A system which facilitates HVAC design for buildings or portions thereof is disclosed. The system comprises a server and one or more remotely situated terminals. The server, which can be a secure server, comprises software that facilitates calculation of HVAC design. A user can access one or more calculation modules in a session of use of a project. The user can provide alphanumeric information items in one or more data input fields. A calculation module can determine a variety of HVAC design output information items using the data added by the user. Both input and output information items can be securely recorded by the server in a record of a session for a project. Furthermore, multiple users can collaborate by accessing the system and contributing to the record of a project in separate sessions. A record of a session or project can be provided in a printable text file.

Abstract: A plurality of substantially interference-free radar systems, each comprising: means for generating pseudorandom waveforms for sequential transmission by radar; and a radar transmitting and receiving phased array antenna having a horizontal beamangle of a few milli-radians (mR), and a vertical beamangle of about 25 mR.

Abstract: A downhole bladder pump for pumping ligher-than-water liquids. The pump includes an outer tube closed at its bottom and top, but having slots adjacent its upper end to admit the liquid to be pumped. Positioned concentrically within the outer tube is a cylindrical bladder chamber. A cylindrical bladder is mounted within the bladder chamber and registers with the internal surface of such chamber. A cyclically-operated pneumatic control system periodically delivers pressurized air to the space between the bladder and the bladder chamber to collapse the bladder and pump liquid which has flowed into the bladder. At other times during the cycle, the control system draws the bladder outwardly against the internal surface of the bladder housing by the application of vacuum. The liquid to be pumped is then forced into the bladder through a check valve subassembly positioned in the lower end of the bladder housing.

Abstract: A circuit for controlling a pump for pumping a column of gasoline floating on a column of water. A first probe is positioned at the level of the pump intake and a second probe is positioned beneath the first probe. A float switch is positioned adjacent the pump intake for providing a signal when the pump is immersed in liquid. The float switch and the probes are operatively connected to an AND gate circuit which generates a preselected signal when both probes are immersed in a nonconducting liquid. A time delay is operatively connected to the AND gate and begins a timing period responsive to the preselected signal. At the end of the timing period, the time delay provides a signal which energizes the pump. A latch circuit maintains the pump in an energized condition until both probes are again immersed in water.

Abstract: There is disclosed a turbodrill having thrust bearings received within an annular space between its shaft and case to support the shaft for rotation within the case, and a face seal closing off the lower end of the space beneath seal rings forming a lubricant chamber in which the bearings are contained. One seal ring of the face seal is carried by the case for rotation therewith, and the other seal ring thereof is carried by a sleeve for rotation therewith. The sleeve extends from within the space to a level beneath the case, and is connected to the shaft for rotation therewith. Means are provided for moving the sleeve longitudinally with respect to the shaft in order to adjust the preload applied by springs to the other seal ring of the face seal.

Abstract: A well drilling tool is disclosed as having a reservoir for supplying lubricant to a bearing chamber to replace that which is lost during operation of the tool, and a means for indicating to an operator at surface level when a predetermined volume of such lubricant has been lost.

Abstract: There is disclosed a turbodrill having an axial thrust bearing section which is contained within a lubricant chamber arranged within an annular space between the case and shaft of the turbodrill above the turbine section, and which is defined between means sealing between the shaft and the case which, in use of the turbodrill, are above the drilling fluid circulating therethrough.

Abstract: There is disclosed a well drilling tool having a body which is connectible as part of a drill string and which includes inner and outer members which are supported for rotation with respect to one another by bearing means contained within a lubricant chamber in an annular space between the members. A series of annular, vertically stacked buckets are carried by the inner and outer members within an annular space above seal means at the upper end of the lubricant chamber, and a body of material which acts as a liquid and is contained within each of at least the upper buckets has a specific gravity substantially greater than that of drilling fluid which is circulated through a portion of the annular space above the lubricant chamber.

Abstract: There is disclosed a turbodrill wherein excessive wear on the axial thrust bearing supporting the shaft from the housing is detectable at the surface by means of an increase in the back pressure of the drilling fluid circulating through the turbine section.

Abstract: A well drilling tool is disclosed as having an inner tubular member rotatably supported from an outer tubular member by means of bearings contained within an annular lubricant chamber between them. An annular chamber is formed in an inner tubular member to provide a reservoir for supplying additional lubricant to the chamber to replace that which is lost during use of the tool. An annular piston is sealably slidable within the reservoir, and drilling fluid, which is circulated through a passageway through the tool, is admitted to one end of the reservoir by a port in the inner member to urge the piston toward the other end of the reservoir which connects with the lubricant chamber.

Abstract: There is disclosed a seal assembly comprising alternate, generally "V"-shaped layers of graphite and a spring metal which are nested one within the other for sealing between the relatively movable, generally coaxial cylindrical surfaces of an annular recess in which the assembly is contained.

Abstract: There is disclosed a tool which is connectible as part of a drill string and which is adapted, upon lifting of the drill string, to permit drilling fluid therein to by-pass a motor in the lower end of the string below the tool.

Abstract: There are disclosed several embodiments of a well tool which is adapted to be connected as part of a pipe string through which drilling fluid is circulated, and which comprises inner and outer members which are rotated with respect to one another by a motor between them.

Abstract: Apparatus is disclosed wherein a tubular body connectible in a drill string and having a float valve arranged therein to normally close the string, as the string is lowered into a well bore, is provided with a plurality of ports connecting its bore above the float valve with its exterior, and valve means for movement from a position normally closing to a position opening the ports when the exterior fluid pressure exceeds the fluid pressure in the bore above the float valve by a predetermined amount.

Abstract: There are disclosed several embodiments of a well drilling tool which is adapted to be connected to the lower end of a drill string above the drill bit, and which comprises inner and outer members which are rotated with respect to one another by a motor between them.

Abstract: A sewage treatment and recycling system is disclosed wherein effluent is initially treated in a septic tank and then flows over a perforated splash pan to be distributed evenly over a removable filter. The filtered effluent then passes through a second filter and into a holding tank from where it is pumped to a water tank and chlorinated before being sprayed over the land surface or used for other purposes.

Abstract: There are disclosed several embodiments of a well tool which is adapted to be connected as part of a pipe string through which drilling fluid is circulated, and which comprises inner and outer members which are rotated with respect to one another by a motor between them.