Abstract: A pressure change sensor includes a flexible hollow body to receive pressure changes, an inner body in said flexible hollow body, the inner body being of a size less than and a shape different from the hollow of said hollow body to prevent total occlusion of the hollow body interior under pressure, and a fluid operated switch in fluid communication with the interior of the hollow body responsive to pressure changes applied to the hollow body.

Abstract: A peristaltic pump including an outer casing rotatably receiving a cage carrying rollers for planetary movement, the rollers extending radially outwardly and inwardly beyond the cage, a flexible tube interposed between the casing and rollers for peristaltic flexure upon roller motion, and a central rotary drive in driving engagement with the rollers for effecting motion of the latter.

Abstract: A stretcher including an elongate pocket of flexible sheet material adapted to removably receive and retain an elongate stiffener of a width up to that of the pocket, an elongate torso girding part extending transversely across and secured to the pocket at the crossing region spaced laterally between the side edges of the pocket, said torso girding part being rigidified adjacent to the pocket for effecting firm underarm support to the person on the pocket enveloped by the girding part, and straps for securing an enveloped person in position relative to a pocket containing a board of any possible width.

Abstract: For joining together the turns of strip-wound hose and edges of the strip forming the turns are overlapped and folded connection band is placed along such folds. The connection band is then squeezed forming a fold neck in which the edges of the strip or strips are locked. Furthermore the connection band may be bent into an S-cross section with two open bays or pockets into which the overlapping strip edges are tucked before the pressing to give a strong seam. The edge parts of the strip may have a bead or be turned over.

Abstract: A woodworking tool for cutting plugs including a generally cylindrical, hollow bit having its working end open and of a wall thickness tapering from the working end, the wall having a through opening on one side spaced from the working end and a longitudinal slot extending from the side opening and opening through the working end, with the working end configured to define a cutting edge and stop for depth of cut.

Abstract: A quoit throwing game including three posts impaled at each end of a quoit pitching area or range; the posts being arrayed in a row longitudinally of the range with the intermediate post highest, so that the intermediate post most easily receives thereover a thrown quoit, the forward post receiving thereover a thrown quoit with some difficulty, and the rearward post receiving thereover a thrown quoit with greatest difficulty.

Abstract: A drive mechanism for bicycles and other devices, comprising a rotary crank shaft having radial crank arms, oscillatory guides or ways spaced from the axis of the crank shaft, crossheads shiftable in the guides, and connecting rods connected between respective crossheads and crank arms, so that crosshead movement is transmitted to the crank shaft, which may power a vehicle or other device.

Abstract: An information folder wherein a strip of paper or like sheet material is subdivided by a plurality of generally equally spaced parallel scores into a plurality of generally rectangular panels having informative indicia marked thereon, and folds are provided along the scores defining hinge connections between panels, the strip being wound about one end panel into a flattened spiral with all the panels in generally congruent overlying relation with each other.

Abstract: A cement kiln dust treating apparatus including a reaction chamber for receiving kiln dust, nozzles in an upper region of the reaction chamber for atomizing and discharging spray to the kiln dust, mixing blades for mixing the dust in contact with the spray, and a pelletizer for pelletizing the mixed and contacted kiln dust product.

Abstract: A press wherein a pair of press members are connected together by a generally parallel linkage and a hydraulic or other fluid pressure mechanism is connected between the press members to forcibly move the latter together for forming a workpiece therebetween.

Abstract: A venetian blind which may have a conventional head rail, tilt rod, ladder tapes and slats, wherein a framework is mounted in the head rail and rotatably passes the tilt rod, an arm extends generally radially from the tilt rod for rotation with the latter, and a pair of stop members are selectively positionable relative to the framework in the path of arm movement for limiting arm rotation in opposite directions. The slats may be provided with reflective and absorptive surfaces to cooperate with the limiting positions of tilt for reflecting and absorbing heat in accordance with the seasons or other desiderata.

Abstract: An archery target wherein transversely gathered thermoplastic film is wrapped into the shape of an animal to be simulated, the wrapped shape is covered with thermoplastic sheeting heat sealed to the wrapped film, and the shape is filled with additional transversely gathered plastic film folded upon itself and inserted into the wrapped film shape.

Abstract: A venetian blind including end rails and slats all extending in parallelism with each other and lying in a cylindrical or arcuate surface, and a stay extending through the slats and between the end rails to maintain the venetian blind in its arcuate configuration.

Abstract: A manual drive for a bicycle, or other usage, wherein a rotary crank is connected in driving relation with a bicycle wheel or other driven device, and a slotted block or yoke rides on a guide or pin by manual actuation, a connecting rod being connected between the yoke and crank to rotate the latter upon the yoke movement and thereby rotate the driven device.

Abstract: A device for cooling the human body including a console having its interior communicating with a source of cooled and otherwise conditioned air, a seat adjacent to the console for supporting a user in sitting position with legs astride the console, the console having a face outlet opening upwardly from an upper region of the console for passing the conditioned air to a user's face, and the console having hand outlets opening upwardly from an upper region for passing conditioned air to a user's hands.

Abstract: An elongate hollow body of frusto conical tubular formation having a plurality of internal prongs resiliently projecting obliquely into the hollow of the body obliquely away from the larger body end, and a closure on the smaller body end, the body being constituted of longitudinal sections swingable relative to each other for opening the body to remove an occupant.

Abstract: A food processing apparatus having an extrudate outlet nozzle, an extrudate receiver, the nozzle and receiver being movable to discharge extrudate in a preselected two dimensional line configuration on the receiver, and a programmable controller for controlling the movement to achieve the configuration.

Abstract: For use in predicting machine failure a transducer sensor, such as piezoelectric crystal, is applied to a machine for sensing machine motion and structure borne sound, including vibration friction, and shock waves. The structure borne sound and motion sensed is converted to electrical signals which are filtered to leave only the friction and shock waves, which waves are processed, as by detecting the envelope and integrating beneath the envelope, resulting in a measure of friction and shock wave energy. This measure may be compared with that of a less used machine, say the same machine when new, to indicate the rise in energy due to change in machine parts.

Abstract: A looseleaf ring binder for computer paper having perforate longitudinal margins, the binder rings and paper perforations being arranged for passage of the rings selectively through perforations of opposite margins, or perforations of the same margin.

Abstract: An emergency brake system for a vehicle, the system including an actuator rotatable upon operation of the service brake, a follower rotatable coaxially with the actuator and normally maintained out of the path of actuator movement, and a sensor sensing malfunction of the service brake to shift the follower into the path of actuator movement, the follower being connected to the parking brake for operation of the latter by the actuator in response to a service brake malfunction.