Abstract: A picture card (9) including a front card (11), a back card (10), a first transparency (14) and a second transparency (18). First and second transparencies are rotatably secured together by means of grommet (20) and second transparency (18) is mounted to back card (10). First transparency (14) preferably includes an image similar to that of second transparency (18), whereby first transparency (14) can be rotated to align its image with the image of second transparency (18).

Abstract: A concrete building block (2) has complementary projections (10) and recesses (12) to cause it to interlock with other blocks (2). A T-shaped channel (16, 26) on the top surface (4) receives an anchor member (32). A projecting end (36) of the member (32) may be secured to an anchor cable (104). The ends of a metal cable (22) are embedded in the block (2) with an eye portion (24) projecting into an increased depth channel portion (20). The lower surface (6) of the block (2) has parallel channels (28) for receiving the tines of a forklift. The channels (16, 28) have breakaway walls (18, 30) at their outer ends, which are not broken away unless the channels (16, 28) are to be used. The walls (18, 30) prevent concrete from flowing out of the channels (16, 28) when reinforcing concrete is poured through vertical openings (14) in the block (2). In molding the block (2), slugs (86) are releasably attached to opposite mold walls to form the openings (14).

Abstract: A prospector shovel and crevicing tool (10) having a first scoop (12) and a second scoop (14). Both scoops have a rigid tubular sidewall (16, 24), a closed end (18, 26), and an open end (20, 28). The closed ends (18, 26) abut each other to form one tool that has a scoop on each end that can be used to hold gold ore or to crevice rocks and other debris. Each open end (20, 28) of its respective scoop forms an angle (.varies., .phi.) with its respective sidewall (16, 24). In preferred form, the first and second scoops (12, 14) angularly abut at angle (.theta., .theta.') to provide better leverage for scooping in conjunction with the prospector's use of the second scoop as a handle. The diameter (d1) of the first scoop (12) is larger than that of the diameter (d2) of the second scoop (14).

Abstract: A concrete building block (10) having a top (12), a bottom (14), substantially identical first and second end portions (16, 18) and a central portion (20). First and second end portions (16, 18) each have a connector pin (28, 34) and a complementary connector socket (30, 36), where each connector pin and connector socket generate about a vertical axis of generation (A1, A2). The block (10) also includes a lifting eye (46) that projects upwardly from a well (50) and a decorative surface (56) of vertical ridges and valleys on at least the first side (22), and a first and second end surfaces (26, 32). An alternate block (11) includes a circular top (58), a circular bottom (60), and a sidewall (62). Block (11) also includes a connector pin (64), a complementary connector socket (66) and a vertical axis of generation A3, of which connector pin (64) and connector socket (66) generate about, and a means for engaging block 11 with a lifting device.

Abstract: A drive unit for a reciprocating floor conveyor has a piston component (90) with an outer end longitudinally fixed to a transverse mounting member and a movable cylinder component (92) with a tubular extension (102). A slide bearing (104) supports and guides the tubular extension (102). The drive unit, including the tubular extension, acts as a structural beam. In a first embodiment, each floor member of the conveyor has its own drive unit to provide a powerful drive assembly for heavy loads. In a second embodiment, a plurality of drive units are part of a compact frame (302) having two longitudinal frame members (308) and two transverse mounting members (304, 306). The drive units are mounted in a window defined by the frame (302). A plurality of transverse drive beams (330), one for each drive unit, are connected to the drive units and reciprocate between the transverse mounting members (304, 306). This provides a compact and lightweight drive assembly that may be used for lighter loads.

Abstract: A floor slat member (10) having longitudinally extending first and second sidewalls (32, 34) of a reciprocating floor conveyor includes integrally formed first downwardly opening channel portion (36), having a top panel (40), laterally extending side flange (76) and the first sidewall (32), and an adjacent upwardly opening channel portion (38), having a channel wall (68) and second sidewall (34). The side flange (76) overhangs second sidewall (34) of an adjacent floor slat member (10'). An elongated seal member (72) carried by the second sidewall (34) in a channel (74) extends upwardly contacting a seal member receiving surface (78) on the first sidewall (32). An alternate embodiment has a seal receiving surface (78') on side flange (76).

Abstract: A floor slat member (10) having longitudinally extending first and second sidewalls (32, 34) of a reciprocating floor conveyor includes integrally formed first downwardly opening channel portion (36), having a top panel (40), laterally extending side flange (76) and the first sidewall (32), and an adjacent upwardly opening channel portion ( 38 ), having a channel wall (68) and second sidewall (34). The side flange (76) overhangs second sidewall (34) of an adjacent floor slat member (10'). An elongated seal member (72) carried by the second sidewall (34 ) in a channel ( 74 ) extends upwardly contacting a seal member receiving surface (78) on the first sidewall (32). An alternate embodiment has a seal receiving surface (78') on side flange (76).

Abstract: A new wheel assembly (14), with a gear reducing hub (22), and including a new hand wheel assembly (30) mounted on a hand wheel hub (36) for a manual multispeed wheelchair (10), that has an improved shifting mechanism that allows easy shifting at user's hand level. A shifter (76) is rotated, which axially moves a shift member (52) to couple with drive chock openings (46) in direct drive or a planetary gear system (58) for low gear operation. The new wheel assembly (14) also includes a quick disconnect mechanism for easy change of the wheel assembly (14) from the wheelchair (10) without tools. A torque collar (144), on the inboard side of the hub (22), couples with a sleeve assembly (136) on the wheelchair (10) and allows torque to transfer directly from hub (22) to wheelchair (10).

Abstract: A method of converting a dehumidifier (10) having a base portion (16), a center portion (18), an upper portion (20), a desiccant container (62), and receptacle container (36), to an air purifier (12). The method includes removal of the desiccant container (62) and replacing it with an air filter cartridge (94). The invention is also directed to the air purifier (12) and air filter cartridge (94) for converting from a dehumidifier (10) via the air filter cartridge (94).

Abstract: A cushioning, sweat-absorbing, advertising sweatband which is easily attached and removed from an existing hat or headgear that has an exposed headband. The band is a piece of material that has a foam cushion inserted inside the material and sewn in such a way as to form three distinct rectangles which are wrapped around each other and mate together through hook and loop fasteners over the exposed headband of a hat, such as an adjustable baseball cap.

Abstract: A sleeping bag with a flexible mesh ventilation panel. A removable and adjustable ventilation panel spans an elongated access opening of the sleeping bag and attaches to edge portions of the opening via an adjustable closure device, such as a zipper.