Duane D. Logsdon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: The present invention relates to a roof drain structure comprised of a drain plate having an upstanding overflow port and a clamp ring used to secure an edge of the roofing substrate against the drain plate and around the overflow port. The clamp ring surrounds and physically cooperates with the overflow port to align several screw apertures and the clamp ring with several corresponding apertures in the drain plate. There are preferably at least two alternative drain plates having different size overflow ports, and a clamp ring that may be modified to fit either of the ports and still align the screw apertures. The preferred clamp ring has removable spokes that are left in place for use with a smaller overflow port and that are removed for use with a larger overflow port. The overflow port is preferably stepped to have a lower larger portion and an upper smaller portion so that the contractor can modify the overflow port in the field to accommodate different sized drain pipes.
Abstract: Concrete barrier structures for use in forming holes in concrete slabs or the like can be constructed so as to include a peripheral wall shaped as the frustum of a right circular cone having an upper end and a lower end. A closure is provided to close off the upper end of the peripheral wall. A series of equally spaced, identical upper supports are located on the exterior of this peripheral wall intermediate the ends of this wall. Grooves are provided on the interior of the peripheral wall for accommodating the upper supports on an adjacent, nested barrier structure.
Abstract: A movable fitting member such as a bathtub drain stopper can be constructed so as to be useful with different drain fittings which differ by having post holders with different sized openings into which a guide post can be threaded. Such a movable fitting member is constructed so as to use a body having a sleeve located around a post holder and having an enlarged cavity around the post holder within the body. The guide post used is double ended; one end is threaded into the post holder in a drain fitting and the other end is located within the cavity. A nut is located on this other end; it is sufficiently large so that it cannot pass through the sleeve. As a result of this the body cannot normally be separated from the guide post during the use of the fitting member.
Abstract: A desirable seal structure for use in forming a seal around the exterior of a pipe or the like can be constructed so as to use a retainer member, a compression member, a sealing member located generally within the retainer member and generally between the compression and retainer members and bolts for compressing the retainer and compression members against the sealing member. The compression and retainer members are provided with beveled surfaces which are complementary to corresponding tapered surfaces on the sealing member. The sealing member is shaped so that it will move inwardly when compressed between the compression and retainer members.
Abstract: An improved roof drain cover useful in minimizing the changes of comparatively large amounts of water backing up around the drain can be constructed so as to include primary and secondary rims serving as weirs located on a flange which extends around a centrally positioned grate. The primary rim is formed at the periphery of the flange and integrally therewith, while the secondary rim is formed adjacent the junction of the flange and grate and forms a channel with the grate. Notches are provided in these rims so as to permit water flow through them. The dimensioned rims are so that, as such inorganic particles accumulate against them, lighter organic material such as leaves will be carried by draining water over the rims and up against the grate.
Abstract: A known pipe holder having a split cylindrical body having a plurality of spaced pipe engaging fins located on the interior therof, a plurality of holding structures for engaging the interior of a hole in a support member located on the exterior thereof and flanges for limiting the insertion of said body into such a hole by engaging a surface in the support member, said body being capable of being temporarily opened along the slit therein so that it can be around a pipe can be improved by (1) constructing the holding structures so that each of them comprises a plurality of spaced, radially extending elongated vanes for engaging the interior of an elongated hole, each of the vanes having an edge located remote from the body, each of the vanes also having a barb located on each of the edges; or (2) constructing the holding structures so that each of them comprises a plurality of spaced ratchets located on the exterior of the body at the same distance from the flanges for engaging the surface of a member remote
Abstract: A desirable tub box can be constructed using identical, hollow housing and closure sections having perpherial or edge flanges carrying cooperating male and female structures which secure the sections together in a face to face relationship. Knockout opening areas are provided in the peripheries of the sections so as to provide an opening to accommodate a pipe.
Abstract: The application of stresses which might cause damage to a pipe or tube when the pipe or tube is held by a holder or clam can normally be avoided by using fins on the holder which resiliently engage the pipe and which do not press any sharp edges directly into the periphery of the pipe.
Abstract: A pipe hanger can be constructed so as to utilize a central body portion and a separate strap. Both ends of the body portion includes a vertically extending slot; a ratchet structure is provided in one of the body portion slots. The strap is provided with an enlarged head at one of its ends so that it can be dropped through the other of the slots until it is held against further movement by the head engaging the body portion. Ratchet teeth are located on the other end of the strap so that the strap can be wrapped around a pipe and the pipe secured to the body portion by inserting this other end of the strap in the slot having the ratchet structure in the body portion.
Abstract: An expandable pipe plug can be constructed so as to use a peripherial elastomeric sleeve having an exterior surface which is adapted to seal against the interior of a pipe and a tapered internal surface which fits against a correspondingly shaped, tapered surface of a rigid expander. The tapered surfaces of the sleeve and the expander are provided with coaction threads so that as the expander is turned the sleeve will be expanded outwardly. The expander includes a stud for use with a tool such as a wrench in turning it relative to the sleeve, this stud including an internal threaded passage which is initially closed off by a knock-off disk. The passage can be used in connecting a pipe, a gauge, a valve of the like to the end of a pipe sealed off with the pipe plug.
Abstract: An improved tub box structure can be manufactured so as to utilize a container shaped so as to include a bottom wall and a top peripheral wall extending upwardly from the bottom wall, this peripheral wall sloping between its top and its bottom so as to diverge upwardly from the bottom wall. Knock out openings are provided in the bottom wall and in the peripheral wall for use in passing a pipe into the tub box structure. A lid capable of closing off the interior of the container is fitted into the top of the container so that it may be easily removed.
Abstract: A fluid control valve capable of controlling both a hot and cold water supply for an appliance such as a washing machine or the like includes a handle which can be used to simultaneously turn on and turn off both the hot and cold water supply, or allows for independent operation of these same supply lines. The valve has a valve body having a central hollow bore extending through the valve body. Appropriate hot and cold water inlet and outlet nipples are attached to the valve body. A hot water control element fits within the hollow bore on one side of the valve with a cold water control element also fitting within the bore but on the opposite side of the valve. The control handle is located in the middle of the valve and is split, with one side connecting to the hot water control element and the other side connecting to the cold water control element. End caps are utilized to seal the end of the hollow bore so as to contain the control elements therein.
Abstract: A washing machine outlet box of the type capable of fitting within a wall and attaching to wall studs within this wall is improved by incorporating during the manufacture of said washing machine outlet box a disc as an integral part of the bottom wall, with the disc located over the future drain opening. The disc is attached to the bottom wall by a breakable or severable ring. After installation of the washing machine outlet box to an appropriate drain pipe, the disc serves as a plug for pressure testing of the drain pipe and further serves as a dam to prevent introduction of foreign material into the drain pipe during construction stages of the wall and the like. Upon completion of pressure testing and after completion of construction, a tab attaching to the disc is lifted upwardly so as to sever the ring attaching the disc to the wall to free the disc to form the drain opening in the bottom wall of the washing machine outlet box.
Abstract: A self supporting grate for a drain structure can be improved by including as part of the grate a mounting base sized and shaped to attach the grate to the drain structure. At least a portion of the grate is formed as a generally upwardly projecting wall attaching to and extending from the base. The wall includes a plurality of weirs capable of forming a variable flow fluid pathway to the interior of the grate for fluid disposal by the drain structure. The weirs are constructed so as to allow fluid at a first fluid level on the wall as measured from the base to flow at a first rate from the exterior of the grate into the interior grate and fluid at a second fluid level likewise measured along the wall from the base to flow at a second rate into the interior of the grate, with the second rate being different from the first rate. A guard lip is located on the mounting base peripheral to the grate to retard the flow of solid material over the guard lip and to prevent clogging of the grate.
Abstract: A roof drain for either a sump or a flush installation has a body having a centrally located water collecting section which is capable of being attached to a pipe, a first surface extending around the periphery of the central section, a connecting surface extending upwardly and away from the periphery of the first surface and a second surface extending outwardly around the periphery of the connecting surface. The first and second surfaces are parallel to one another with the second surface serving as the mounting surface for mounting the drain on to a roof. A grate attaches to the body by attaching directly to the second surface for sump functioning, or in conjunction with an insert for flush functioning. For the flush functioning, the insert fits against the connecting surface and the first surface to become located between the grate and the body.
Abstract: A roof vent includes a plate and a housing integrally formed together. An opening in the plate extends upwardly into the hollow interior of the housing. A partition located within the housing divides the interior of the housing into an upper and lower section. The partition includes a hole allowing for fluid flow between the upper and lower sections. A diaphragm lays on the upper surface of the partition over the hole in the partition. The diaphragm prevents fluid movement from the upper section of the interior into the lower section of the interior, but allows for reverse flow of fluid. A diaphragm positioning member is located in the upper section and maintains the diaphragm in its position on the partition over the hole in the partition. The diaphragm positioning member includes at least one opening in it allowing for fluid passage between the partition and the diaphragm and through the opening in the diaphragm positioning means.
Abstract: A pipe clamp is formed with a body and the body includes a wall. The wall is formed as a loop which completely surrounds an aperture except for an interstice opening through the wall into the aperture. The portions of the wall located on either side of the interstice forms first and second wall ends. The body also includes a foot joined to the wall. A discontinuous passageway passes through the first and second wall ends and through the foot. This passageway is capable of receiving an object such as a nail. The size of the nail utilized is such that its length is greater than the length of the passageway such that when the nail is located within the passageway a portion of the nail is capable of holding the first and second wall ends together in fixed association and a further portion of the nail is capable of extending out of the passageway beyond the foot.
Abstract: In high-rise and mid-rise buildings wherein a concrete slab serves as a floor for one level and a ceiling for the level below it, it is necessary to secure vertical plumbing pipes to the slab wherein the plumbing pipes penetrate the slab through holes passing between the levels. An apparatus for securing these pipes includes a first and second member. Each of the members includes a base having a first and second end. Each of the members include one or more ribs attaching perpendicular to the base and extending between the ends of the base. The ribs on each of the members taper from the first end toward the second end of the base such that in side view each of the members is wedge shape in cross-section. The first member is located in the hole in the slab adjacent to the pipe by inserting from the top and the second member is located by so inserting through the bottom. This orients the members such that the large ends of their tapers are distal from each other.
Abstract: A self supporting grate for a drain structure can be improved by including as part of the grate a mounting base sized and shaped to attach the grate to the drain structure. At least a portion of the grate is formed as a generally upwardly projecting wall attaching to and extending from the base. The wall includes a plurality of weirs capable of forming a variable flow fluid pathway to the interior of the grate for fluid disposal by the drain structure. The weirs are constructed so as to allow fluid at a first fluid level on the wall as measured from the base to flow at a first rate from the exterior of the grate into the interior grate and fluid at a second fluid level likewise measured along the wall from the base to flow at a second rate into the interior of the grate, with the second rate being different from the first rate.