52 results about "Floor openings" patented technology

A balance (1) has a balance housing (2), which, when the balance is set up for operation, has an opening at its topside to pass a load-introducing member (4). The housing has a draft shield arrangement (5), separable from, and attachable to, the housing. An opening (7) on a floor (6) of the draft shield arrangement corresponds to the housing opening and allows the load-introducing member to pass. A design that facilitates cleaning while keeping the height of the balance low is achieved with a fastening arrangement (8) for the draft shield arrangement. The fastening arrangement allows the draft shield arrangement to be fastened centrally at the load-introducing member passage. A rim on the housing opening operates as a first part (8′) and provides a form-locking connection with a second part that is attached to the draft shield arrangement at the draft shield floor opening.

A balance (1) has a balance housing (2), which, when the balance is set up for operation, has an opening at its topside to pass a load-introducing member (4). The housing has a draft shield arrangement (5), separable from, and attachable to, the housing. An opening (7) on a floor (6) of the draft shield arrangement corresponds to the housing opening and allows the load-introducing member to pass. A design that facilitates cleaning while keeping the height of the balance low is achieved with a fastening arrangement (8) for the draft shield arrangement. The fastening arrangement allows the draft shield arrangement to be fastened centrally at the load-introducing member passage. A rim on the housing opening operates as a first part (8′) and provides a form-locking connection with a second part that is attached to the draft shield arrangement at the draft shield floor opening.

A floor grommet for use in building and office structures supplied with air conditioning via under floor plenum. Directed flow of conditioned air is optimized by limiting the escape of air from the plenum into the space above the floor by leakage through floor openings provided for power cables, data cables and the like. Specialized floor grommets installed in the cable openings are comprised of a surrounding frame mounting sealing elements comprised of thin, flexible elements which are anchored at one end in the grommet frame and extend toward the center of the opening, from each side, to effectively close the opening against significant flow of conditioned air from the plenum below. Cables passing through the grommet opening cause minimal deflection of the flexible elements to limit the escape of conditioned air. Preferably, the resilient, flexible elements are filamentary in nature. To particular advantage, the filamentary sealing elements may be installed in multiple stages, with stages underneath being in contact with stages above, in outer portions thereof. Additionally, solid, van-like sealing elements may be provided to assist in centering of the cable elements, when cables are installed, and to provide a substantially complete seal, for those openings in which no cables are installed. The floor grommet of the invention is designed for initial or retrofit installation. Significant economies in the usage of conditioned air are realized when the floor grommets are employed.

A mounting flange for attaching an HVAC air diffuser terminal in an opening in a floor or other mounting surface. The mounting flange includes a trim ring and a flange clip. The flange clip is adjustably and movably received in a slot defined a side of the trim ring. A pawl on the flange clip engages with ratchets defined in a surface of the trim ring adjacent to the slot to maintain the flange clip in selected position relative the underside of a floor. The air diffuser terminal is secured in the floor opening between gripping surfaces on the flange clip and the trim ring. An optional screw operably connects the flange clip with the trim ring so that the diffuser may be securely tightened in the floor opening.

Retrieving a down hole tool at a lower end of a string of casing can be performed with drill pipe during a casing-while-drilling operation. The operator suspends the casing on a landing sub landed in a drilling rig floor opening. A string of drill pipe is lowered into the casing while the casing is suspended for engaging and retrieving the down hole tool. A spillage preventer in the landing sub prevents spillage of drilling fluid as the drill pipe is being retrieved. When circulation is desired, the operator secures a circulation tool to an upper end of the drill pipe, then lowers the drill pipe and the circulation tool to close off an upper end of an inner annulus between the drill pipe and the casing. A connection between the circulation tool and the landing sub allows the operator to reciprocate the casing.