Abstract: An extendible sofa has a base assembly, a slide out assembly and a seat assembly. The base assembly has a base assembly frame that forms a seat, and the base assembly frame has a guide. The slide-out assembly is slidably connected to the base assembly by way of the guide. The guide facilitates movement of the slide-out assembly between a compact position and an extended position in which the slide-out assembly extends out away from the base assembly to provide additional seating. The slide-out assembly has a seat guide. The seat assembly has a seat frame slidably connected to the seat guide, and the seat guide facilitates movement of the seat assembly between a stowed position in which the seat assembly is housed within the slide-out assembly and a seat position.

Abstract: A sofa bed is convertible to a bunk bed using a base frame assembly; an upper bunk assembly to be disposed on the base frame assembly in a seating position and to be disposed above the base frame assembly in a bunk bed position; a front link and a rear link pivotally attached to the base frame assembly and the upper bunk assembly, alternative embodiments adding a flange plate secured to the rear link with a motor, cable, drive, screw and drive assembly, or adding a torsion spring assembly, or substituting vertical scissors mechanism for the links or substituting telescoping supports for the link assemblies.

Abstract: An extendible sofa has a base assembly, a slide out assembly and a seat assembly. The base assembly has a base assembly frame that forms a seat, and the base assembly frame has a guide. The slide-out assembly is slidably connected to the base assembly by way of the guide. The guide facilitates movement of the slide-out assembly between a compact position and an extended position in which the slide-out assembly extends out away from the base assembly to provide additional seating. The slide-out assembly has a seat guide. The seat assembly has a seat frame slidably connected to the seat guide, and the seat guide facilitates movement of the seat assembly between a stowed position in which the seat assembly is housed within the slide-out assembly and a seat position.

Abstract: A sofa bed is convertible to a bunk bed using a base frame assembly; an upper bunk assembly to be disposed on the base frame assembly in a seating position and to be disposed above the base frame assembly in a bunk bed position; a front link and a rear link pivotally attached to the base frame assembly and the upper bunk assembly, alternative embodiments adding a flange plate secured to the rear link with a motor, cable, drive, screw and drive assembly, or adding a torsion spring assembly, or substituting vertical scissors mechanism for the links or substituting telescoping supports for the link assemblies.

Abstract: A sofa bed is convertible to a bunk bed using a base frame assembly; an upper bunk assembly to be disposed on the base frame assembly in a seating position and to be disposed above the base frame assembly in a bunk bed position; a front link and a rear link pivotally attached to the base frame assembly and the upper bunk assembly, alternative embodiments adding a flange plate secured to the rear link with a motor, cable, drive, screw and drive assembly, or adding a torsion spring assembly, or substituting vertical scissors mechanism for the links or substituting telescoping supports for the link assemblies.

Abstract: An extendible sofa has a base assembly, a slide out assembly and a seat assembly. The base assembly has a base assembly frame that forms a seat, and the base assembly frame has a guide. The slide-out assembly is slidably connected to the base assembly by way of the guide. The guide facilitates movement of the slide-out assembly between a compact position and an extended position in which the slide-out assembly extends out away from the base assembly to provide additional seating. The slide-out assembly has a seat guide. The seat assembly has a seat frame slidably connected to the seat guide, and the seat guide facilitates movement of the seat assembly between a stowed position in which the seat assembly is housed within the slide-out assembly and a seat position.

Abstract: A sofa bed is convertible to a bunk bed using front and rear links coacting with gas cylinders to lift a bunk frame from the sofa position, in which it is used for seating, to a bunk bed position where seat cushions are used on the bunk and a mattress is available for a lower bunk, being lockable in a down, or seating position and lockable in and up, or bunk bed position with a brace and ladder deployable to secure the bunk.

Abstract: A sofa bed is convertible to a bunk bed using front and rear links coacting with front and rear cylinders to lift a bunk frame from the sofa position, in which it is used for seating, to a bunk bed position where seat cushions are used on the bunk and a mattress is available for a lower bunk, the cylinders being lockable and a brace and latter are deployable and lockable to secure the bunk.

Abstract: An extendible sofa has a base assembly, a slide out assembly and a seat assembly. The base assembly has a base assembly frame that forms a seat, and the base assembly frame has a guide. The slide-out assembly is slidably connected to the base assembly by way of the guide. The guide facilitates movement of the slide-out assembly between a compact position and an extended position in which the slide-out assembly extends out away from the base assembly to provide additional seating. The slide-out assembly has a seat guide. The seat assembly has a seat frame slidably connected to the seat guide, and the seat guide facilitates movement of the seat assembly between a stowed position in which the seat assembly is housed within the slide-out assembly and a seat position.

Abstract: An arm assembly with an arm, a plurality of vertical support members and a horizontal member is telescopingly mounted in a housing, such that the arm assembly moves vertically by movement of a scissors mechanism having slidable pivot mountings, whereby movement of a linear actuator at the bottom of the housing translates horizontal movement to vertical movement, which vertical movement is imparted upwardly by a spring and downwardly against the spring, the vertical movement being controlled by a lever and cable actuated lock.

Abstract: A couch frame for vans and recreational vehicles provides for secure mounting of the couch, with pivoting forwardly enabled by a pair of pivots at the front of opposite sides of the legs and with a pair of spring loaded, channel shaped latches linked by a crossbar so that they can be simultaneously released with actuation of a single handle.

Abstract: A head rest lock enables the adjusting of the elevational position of a head rest of a vehicle seat having sleeves that serve as vertical guides for support posts having lock notches therein, the notches providing a plurality of vertical height adjustment positions. The sleeves include a lock latch for manually activating the adjustable height mechanism and ribs which prevent inadvertent rotation of said sleeve. The head rest lock is mountable to a bracket or directly to a seat back frame.

Abstract: An omni-directional taxiway light uses an axially symmetric conjugate lens pair to distribute lamp light, particularly substantially parallel to the taxiway surface, while protruding minimally above the surface. An associated fixture contains a housing holding the optical elements in fixed relative positions and a weather-proof seal arrangement.

Abstract: A vehicle console seat functions as a seat, armrest and beverage container holder for an occupant. The seat back of the console seat can be locked in an upright position and support an occupant sitting on the seat, or the seat back may be released from an upright locked position by applying a lateral force to the side of the seat back, thereby releasing and spring forcing the seat back forward to a fold down position where it can be used as an armrest. The front of the seat may be pivotally opened to expose a beverage container holder. A beverage container holder may also be attached to the rear of the seat.

Abstract: A lightweight, easily maintainable passenger oxygen mask is provided with a face mask sized to cover the mouth and nose of a passenger and a reservoir bag in communication with the face mask. Oxygen is permitted to flow through the bag into the mask, while being prevented from flowing back into the bag. A bag connector is positionable within the bag for holding the bag against the face mask, and cooperative structure is provided on the connector and the mask for providing snap-fit connection between the connector and the face mask to permit the bag connector to be selectively, manually attached to and removed from the face mask.

Abstract: A method of CW navigation is provided using four transmitters (TR1-TR4) operating at sufficiently low frequencies to assure essentially pure groundwave operation. The transmitters are keyed to transmit constant bursts (1/4 sec) in a time-multiplexed pattern with phase modulation of at least one for identification of the transmitters with the ability to identify the absolute phase of the modulated transmitter(s) and the ability to modulate low-rate data for transmission. The transmitters are optimally positioned to provide groundwave coverage over a service region of about 50.times.50 km for the frequencies selected in the range of 200-500 kHz, but their locations are not critical because of the beneficial effect of overdetermination of position of a receiver (R) made possible by the fourth transmitter. Four frequencies are used, at least two of which are selected to provide optimal lane resolution. All transmitters are synchronized to an average phase as received by a monitor receiver (M).

Abstract: A compression wave type signal of a selected frequency is transmitted into the ground at the bottom of a well bore being drilled. The signal is picked up by four microphones that are positioned in another well bore. The microphones have a known orientation with respect to the desired course of the well bore being drilled. The phase relationship of the transmitted signal picked up by the microphones is used to indicate at the surface the deviation between the course of the well being drilled and the desired course.