Abstract: An air cleaning system is provided in which a motor (22) mounted within a housing (20) drives a fan (51) which creates an air flow from inlet (31) through an air inlet compartment (32), spinner (42) and turbine driver (44). The air flow rotates the turbine driver (44) which in turn rotates the spinner (42). The spinner is designed to separate foreign particles from the flowing air. A liquid (33) may be included in the air inlet compartment. The clean air then passes through the air outlet compartment (45) air passage (61), and fan chamber (50), and exits through outlet (53). The device utilizes a separate air flow cooling system which circulates air through vents (26) and (23) in the motor housing (21) and through vents (24) and (25) in the motor casing (21).

Abstract: An expandable multi-purpose utility shelter (10), designed in several sizes, which is quickly erectable by two to six persons, depending upon the size of the shelter. The structure has a sturdy metal frame (12, 16) with a durable fabric cover attached to the inside of the frame. The frame (12, 16) comprises a series of ribs (12) which can be very quickly and easily extended from a compact folded configuration needed for easy transportation to a full-size shelter at erection. Adjacent ribs (12) are connected by a single reinforcing member (16) or by X-shaped reinforcing members (16a) on each side of the shelter. These reinforcing members serve as force transmitting means for opening and closing the shelter (10) and keeping adjacent ribs (12) stabilized and spaced equidistant. Individual reinforcing members are pivotally connected to the lower portion of one shelter leg and rollably or slideably connected to the upper portion of a next adjacent shelter leg.

Abstract: A manufactured fireplace log for fireplaces or as a general utility fuel and methods for making such logs and comprising an inner core comprised of coal, petroleum coke, or other carbonaceous particles (step 92 of FIG. 9) held together by a first binder of flammable material and covered with a coating of flammable wood or wood derived particles (step 90) bonded to the surface of the inner core (step 94) and held together by a second binder of flammable material which can selectively be of the same or of different material from the material of the first binder.

Abstract: An automated control system for maintaining a supply of dissolved oxygen (DO) within a given range in each of a given plurality of pools for treating sewerage, farming fish, or the like, and energizing an alarm system (148 FIG. 1) which, when energized, will warn designated persons of the failure to maintain the amout of D.O. within the given range in a particular pool and with each pool comprising a first sensor for sensing the amount of D.O. in each pool, a settable indicator (146) for detecting, respectively, when the amount of D.O. drops below a first threshold and when the amount of D.O. drops below a second threshold, with both the first and second thresholds being selectively determinable by setting the indicator. Also provided is a communication link for transmitting the amount of D.O. to the indicators, a second sensor responsive to the amount of D.O. dropping below the first threshold (146) to energize the pool aerator (258 FIG. 3) to increase the amount of D.O.

Abstract: An expandable multi-purpose utility shelter (10), designed in several sizes, which is quickly erectable by two to six persons. The structure has a sturdy metal frame (12, 16) with a durable fabric cover (11) attached to the inside of the frame. The frame (12, 16) comprises a series of ribs (12) which can be very quickly and easily extended from a compact folded configuration needed for easy transportation to a full sized shelter at erection. Adjacent ribs (12) are connected by a single reinforcing member (16) or by X-shaped reinforcing members (16a) on each side of the shelter. These reinforcing members serve as force transmitting means for opening and closing the shelter (10) and keeping adjacent ribs (12) stabilized and spaced equidistant. Individual reinforcing members (16 or 16a) are pivotally connected to the lower portion of one shelter leg and rollably or slidably connected to the upper portion of a next adjacent shelter leg.

Abstract: A patio table (10) with attached benches (22) which converts into two completely separate benches (22) with attached backs is disclosed. FIGS. 1 and 2 show the convertible patio table (10) in its assembled configuration. Table top (12) comprises two table top halves (14), having top members (16) attached to top rails (18). FIG. 3 shows the table (10) is transition from its assembled position to its fully disassembled position. FIG. 4 shows the table (10) fully disassembled into two separate benches (22). The backs of benches (22) are formed by unfastening latches (20) and pivoting table top halves (14) and table top support members (24) upward and rearward about bolts (26). Benches (22) comprise top bench members 28, bench rails (30), end bench members (32), foot rails (34) and stops (36). FIG. 5 shows a larger convertible patio table (50) which comprises a convertible patio table (10) assembled together with two table halves (42) of a shorter convertible patio table (40).

Abstract: A tuning assembly (42) is disclosed for selectively oscillating the frequency of an electromagnetic field within a hermetically sealed pulsed magnetron (12), comprising a rigid, hermetically sealed housing (14), apparatus for generating the electromagnetic field therewithin (32, 34, and 36), and elements for defining a cavity (30) within the housing for establishing the frequency of the electromagnetic field. The tuning assembly (42) includes electrically conductive members (54) mounted for linear movement within the cavity (30) to oscillate the established frequency. Elements (52) disposed within the rigid housing (14) are provided for mounting the electrically conductive members (54), and are adapted for oscillatory movement at a predetermined mechanical resonant frequency to move the electrically conductive members (54) linearly.

Abstract: A foldable clothes hanger assembly comprising an elongated telescopic arm assembly (9) and a channel shaped receptacle (12) open on one side for receiving the telescopic arm assembly (9). The telescopic arm assembly (9) is pivotally connected at a first end within the lower end of the channel shaped receptacle (12) in a manner to allow the telescopic arm assembly (9) to be pivotable into and out of the open side of the channel shaped receptacle (12). A support element (18) is mounted at one of its ends to the second end of the telescopic arm assembly (9) and at its other end is mounted within the channel shaped receptacle (12) in a manner to enable the telescopic arm assembly (9) to be selectively pivoted into the channel shaped receptacle (12) or to be pivoted out of the channel shaped receptacle (12) to a horizontal position and upon which clothes or conventional clothes hangers can be hung.

Abstract: An improved and simplified pill dispenser for patients required to take medication comprising a plurality of compartments (A, B, C, and D of FIG. 1) each containing one or more different kinds of pills but all of such pills falling into a class of pills having the same daily morning start-up time and the same time interval between the taking of each pill, a real time clock (RTC) (28), a control panel (FIG. 2) unique to each compartment and comprising, first and second indicators (19 and 20 of FIG. 2) for indicating, respectively, the morning start-up time and the time interval between taking pills, and a time readout indicator (18 of FIG. 2) indicating when the next pill is to be taken. Also provided are a comparator (170 of FIG. 6) for comparing the RTC time with the contents of the readout indicators, an alarm (203 of FIG.

Abstract: A motor control support for a fishing boat employed in conjunction with a fisherman's chair (10) which is mounted on a first end of a vertically positioned pedestal (12) and with the second end of the pedestal being secured rotatably in a receiving pedestal support (24) securely mounted on the deck. The motor control support includes a sleeve (14) which fits around the pedestal (12) and which is connected to a first end of an elongated arm (28) in such a manner that the arm (28) is pivotal in a vertical direction. The other end of the arm (28) is secured to a receiving structure (30) formed on the underside of a platform (34) which supports the motor control assembly (35). The arm (28) can be secured in any desired position so it can have any desired effective length from the chair pedestal (12) to the motor control supporting platform (34). The platform (34) has casters (36 and 38), secured on the underside surface thereof, which ride upon the deck (22) in an arcuate path.

Abstract: A tilting platform lift device for wheelchairs is disclosed. The device (10) securely holds a wheelchair (14) and tilts the wheelchair (14) backward up to 90 degrees to shampoo the hair of the person (12) in the wheelchair (14). The device comprises a tilting platform floor (18) with attached frame (70), a motordriven hydraulic system (24) which includes double-acting hydraulic cylinder (34), four-way control valve (45), electric motor (50), hydraulic pump (48) and hydraulic reservior (52). System (24) is enclosed in case (26) which also acts as a base for platform floor (18). In operation, a person (12) in wheelchair (14) rolls backward up ramp (16) and is secured to platform floor (18) by chains (22), which attach to the arms of wheelchair (14), and chains (23), which attach to the lower frame of wheelchair (14). Platform floor (18) may be tilted forward and backward by operating lever ( 56).

Abstract: An airlock (purge chamber) which functions as an intermediate area between a contaminated area and a clean area where contaminated air may be purged before a person enters the clean area. The airlock (10) is a double-walled circular structure having an outside wall (20) with a single air intake (31) at its top and multiple air discharge ducts (37) spaced around the full 360 degree circumference of its base. The airlock (10) has an inner wall (24) with multiple air intake openings (perforations) (38) across its inner ceiling (26) and around its sides (24), providing a primary purge air flow (34) into the ceiling (26) of the inner wall (24) and down through the airlock (10) and a secondary air flow (32) into the side air intake openings (perforations) (38) and down through the airlock (10). Outgoing purge air (36) flows down through the floor (28) of the inner wall (24) and out the discharge ducts (37) at the base (27) of the outer wall (20) of the airlock (10).

Abstract: A rope friction resistance exercise device (10) for swimmers is disclosed. The device closely simulates the arm movements of a swimmer while using the crawl stroke. The body member (26) has a fixed crosspiece (28) attached to one end and a rotatable crosspiece (30) attached to its other end. Crosspiece (30) is held on body member (26) by retaining ring (32). Rope (12) is looped over fixed crosspiece (28) and wrapped around the body (26). The ends (22 and 24) of rope (12) are threaded through opposite sides of a square-shaped ring (34) which is attached at two points to opposite sides of rotatable crosspiece (30). Body member (26) is perforated by offset holes spaced 30 degrees apart in two rows. A detent assembly (42) located inside the rotatable crosspiece (30) latches crosspiece (30) into particular positions. The amount of friction and therefore the amount of resistance may be increased by rotating crosspiece (30) through its twelve numbered positions in increasing numerical order.

Abstract: A compact expansion chamber for increasing the power of small internal combustion engines, particularly outboard engines for model boats. Its very compact, generally S-shaped configuration allows its center of gravity to be quite close to the engine to which it is attached, thus providing a very short moment arm. This allows model boats upon which it is installed to remain well balanced and level so that they are more maneuverable and quicker to respond to the radio control signals. The expansion chamber (10) comprises: a straight inlet pipe (12) having a flange (22), a diverging section (14) having a 150 degree bend, a straight tubular section (16), a converging section (18) having a 90 degree bend in the direction opposite to the bend in the diverging section, and an outlet pipe (20). A pressure tap fitting (24) connects to the fuel tank pressure line so as to improve fuel flow to the engine.

Abstract: A photomicrographic camera system is provided in which a mirror (26) is utilized to deflect the light beam emanating from the eyepiece (20) of a properly illuminated, compound optical microscope (10) horizontally outward to another mirror (30) which then deflects the beam vertically downward to a film holder (36) containing a sensitized photographic film or paper material. An appropriate housing (24, 28, 32) confines the optical path and protects the film from stray light, while at the same time providing structural support for the mirrors (26, 60, 30) and auxiliary photographic components, such as baffles (57), shutter (48), filters (46), polarizers (52) and analyzers, light meter (69), etc. The film or paper holder (36) lies flat, and is supported by the same base that is used to support the microscope. Because the projection distance is quite long for such a compact device, very large format images (e.g. 20".times.

Abstract: A collapsible support fixture is disclosed for use with camouflage screens, tenting, or the like. A vertical support shaft has a batten spreader support mechanism fixed generally to the top of the shaft for pivotal movement relative thereto between a collapsed position generally alongside the shaft and a spread position generally radially of the shaft. The support mechanism includes a support member fixed generally to the top of the shaft and a plurality of batten spreader support brackets hinged to the support member angularly about the axis of the shaft. A slide collar is slidable on the shaft. Link members are pivotally connected to the slide collar and individually to the batten spreader support brackets for moving the brackets between the collapsed and spread positions in response to sliding movement of the collar on the shaft. Over-center arms are rigidly fixed to the underside of the hinged support brackets to pivotally connect the link members.

Abstract: A tuning assembly is disclosed for selectively oscillating the frequency of an electromagnetic field within a hermetically sealed device, which device includes a rigid, hermetically sealed housing, apparatus for generating the electromagnetic field therewithin, and elements for defining a cavity within the housing for establishing the frequency of the electromagnetic field. The tuning assembly includes electrically conductive members mounted for linear movement within the cavity to selectively vary the volume of the cavity to oscillate the established frequency. Elements disposed within the rigid housing are provided for mounting the electrically conductive members, and are adapted for oscillatory movement at a pre-determined mechanical resonant frequency to move the electrically conductive members in the described linear manner. Finally, a power source is provided exterior to the rigid housing and is magnetically coupled to the mounting elements for exciting the mounting elements.

Abstract: A golf club shaft tapered in a step pattern and having a high deflection point is provided. The grip area has a smaller diameter than the adjacent steps of the taper of the shaft.

Abstract: A sheet of camouflage material is provided for concealing people and equipment from people or animals having a sense of color or geometric perception. The sheet has a plurality of alternating rows of straight-sided, upright V-shaped cuts with intermediate rows of inverted V-shaped cuts. The upright V-shaped cuts line up vertically in alternating columns with intermediate columns of inverted "V" cuts. Each shaped cut is comprised of a long straight incision and a short straight incision which intersect to form a triangularly-shaped point. The ratio of the lengths of the short incision to the long incision and the ratio of the spacing between points of the adjoining shaped cuts in a column and the length of the long incision are defined so as to produce a sheet of camouflage material which, when stretched, produces a three-dimensional effect with sharp points simulating grass or leaves with a height in the third dimension between three and four times the height of previous incised camouflage sheets.