A standing valve which may be retrievably mounted in a well production tubing and will allow the maximum possible fluid flow and also allow the valve to be easily drained and retrieved through the well production tubing. The seal between the standing valve and the bottom hole assembly is located at or below the level of the seat and fluid from the top of the valve into the well is drained through the seat.

A roofing panel system including a plurality of elongated panels disposed in side-by-side parallel array on a supporting roof structure, each panel having an upwardly projecting longitudinal flange along each side with the flanges of adjacent panels together constituting a standing seam at the junction of the panels. A plurality of clips, fastened to the roof structure along each standing seam and interposed between the adjacent panel flanges constituting that seam, engage the tops of the adjace...

A skylight for a standing seam roof having a skylight panel housed in a frame with a vertically extending curb along two longitudinal and two lateral sides. The frame curb integrates on the longitudinal sides with U-shaped curbs formed into modified roof panels selected from the construction project. On the lateral sides, the frame curb integrates with curbs formed in two end pieces painted with the other roof panels in the project. Standing seams, which are raised above the surface of the roof,...

A manually operable standing wheelchair includes an actuator for moving an occupant from a sitting position to a standing position. The manually operable standing wheelchair has a lifting mechanism, including, for example, a ratchet, cable, pulley, and telescopic tubes, which the occupant may manually operate to shift from the sitting position to the standing position. There is also a drive system to enable the occupant to manually move himself or herself in and the wheelchair from the sitting p...

A support frame having a first end frame portion having an apex, a second end frame portion having an apex and spaced laterally from the first frame portion, and a ground-engaging portion coupled to each of the end frame portions is disclosed. A plurality of resilient members connect a seat to the frame, each running from the seat to a point on one of the end frame portions below the apex. The seat is suspended from the end frame portions.

A free-standing chart portfolio for display, storing, file acessing and transporting hanging sheets of documents, such as posters and charts (or other large graphics). The portfolio includes one or more storage frame, for receiving sheets having two flat flexible plastic tabs with holes and slits attached to the back top edge. The spacing of the tabs matches the width of the storage frame. The frame can be used in two positions, a storage position and a file access position. In the storage posit...

An apparatus for in-situ baling of trees is provided. The apparatus includes a first frame which supports, a rotatable second frame. A tree trunk is inserted into the first and second frames. The second frame is rotated by a motor as the frames are elevated toward the top of a tree. During elevation, string is dispensed from a cannister on the second frame, baling the tree. The dispensed string is then secured completing the operation.

A shelf structure comprises a plurality of interconnected posts and shelves. Spaced apart annular recesses or ribs are provided on the posts for positive engagement with corresponding ribs or recesses respectively formed on the insides of multi-piece collars which are placed in position about the posts. A fastening ring either slips over the collar or is screwed upwardly onto the collar to lock it into position and to provide an upwardly facing shelf-supporting surface. Shelf-clamping rings are ...

A free standing fireplace stove is provided wherein the combustion air passes under the bottom of the combustion chamber to keep the bottom of the fireplace unit cool. The fireplace is so well insulated that it may be installed on a rug without the use of a hearth.

A free standing heating unit is provided with a central forge draft intake and a circumferential edge draft intake in a firebox chamber. The central forge draft intake is provided in the center of the firebox chamber floor means and the circumferential edge draft intake is provided between the bottom of the radiant panels which form the sides of the firebox chamber and the top surface of firebox chamber floor means.