Abstract: A frame assembly is mounted on a pickup truck for selectively removably attaching a flexible cover over an open bed of the truck. The truck bed is defined by a pair of spaced, parallel upright sidewalls and a pair of spaced, parallel upright front and rear walls which extend transversely between the sidewalls. The rear wall is a hingedly mounted tailgate pivotable between an upright closed position and a horizontal open position. Fastening means is located on the cover and the frame assembly for removably attaching the cover to the frame. A pair of elongated side frame members are mounted on and extend along a top edge of the truck sidewalls, and an elongated front frame member is mounted on and extends along a top edge of the truck front wall between a front end of the side frame members. A generally elongated box channel is attached to a rear end of each of the side frame members and forms a slide channel therebetween.

Abstract: A portable gas operated rotary tool is provided for milling a surface on the end of a cylindrical workpiece. The tool has a motor powered by a pressurized gas, such as compressed air. The motor directly drives a rotary milling head which is axially aligned with the axis of rotation of the motor. The motor has a stator chamber which houses a rotor having radial slots. Vanes are journaled within said slots for radial movement within the slot and define progressively expanding cavities. The milling head has a central bore for mounting on an arbor of the motor. The milling head includes blades for milling a frustoconical surface on the workpiece and a non-locking pilot tube to align the tool with the longitudinal axis of the workpiece. A novel air motor design is also disclosed that provides very high rotary speeds using standard air system pressure, very high horsepower, a low polar moment of inertia and a low torque.

Abstract: Crystalline elastomeric network compositions are transformable from their original cured shape into an altered shape and subsequently back to their original shape. The transformation process, which is repeatable, is effected by the simultaneous application of heat and deformation forces. The amount of heat required, expressed in terms of temperature, is relatively low. The shape-transformable compositions of the present invention are single phase blends of one or more crystalline polymers and one or more elastomer polymers. The compositions generally have a single broad endotherm due probably to the co-crystallization of the different crystalline segments, a low glass transition temperature, and a low transformation temperature, that is generally less than 100.degree. C.

Abstract: A portable gas operated rotary tool is provided for milling a surface on the end of a cylindrical workpiece. The tool has a motor powered by a pressurized gas, such as compressed air. The motor directly drives a rotary milling head which is axially aligned with the axis of rotation of the motor. The motor has a stator chamber which houses a rotor having radial slots. Vanes are journaled within said slots for radial movement within the slot and define progressively expanding cavities. The milling head has a central bore for mounting on an arbor of the motor. The milling head includes blades for milling a frustonconical surface on the workpiece and means to align the tool with the longitudinal axis of the workpiece.

Abstract: Blends of crystalline and amorphous polymers are utilized to form uncured thermoplastic elastomer compositions which have good properties such as processability, tensile strength, tear strength, good weatherability, good friction, and especially low deformation at high temperatures as about 180.degree. F. The thermoplastic elastomer composition contains amorphous ethylene-propylene type rubber, crystalline ethylene-propylene type rubber, and crystalline olefins such as polyethylene. The crystalline polymers generally impart the necessary thermoplasticity for melt processing, and the like.

Abstract: The invention relates to a pocket calendar which is perpetual and which utilizes two arrays of elements. The first array has coordinates corresponding to the decade and the year. The elements of the array are one of fourteen designators. The second array has coordinates which correspond to the twelve months and to one of seven 31-day month tables which each begin on one of the seven days of the week. Each element of the second array is comprised of two of the designators of the first array. The location of the designator in the second array indicates the month table for the month in question. Funnels direct the user's attention to the proper month table.

Abstract: A collapsible concrete bulkhead is insertable into a framework. The bulkhead has a pivotable divider plate which is located juxtaposition to a bulkhead plate and moves laterally thereof to reside in an offset base portion of the framework. The bulkhead assembly forms separate concrete sections when concrete is poured into the framework and forms a gap when the bulkhead assembly is removed. Optionally, a liner can be inserted adjacent to the bulkhead assembly and the bulkhead assembly removed before full cure of the concrete so that the concrete fills the void left by the bulkhead with the liner separating the concrete sections.

Abstract: An arrow fletching jig is provided for attaching feathers to an arrow shaft. The jig contains a base plate having thereon two upstanding end walls with each end wall having an opening therein to receive the arrow shaft. One of the upstanding end walls is distally attached to the base plate through a bracket and pivots about a pivot pin. The opening of the pivot wall, and hence arrow shaft, is thus capable of traveling in an arc about the pivot pin. Each end wall of the fletching jig has grooves therein for receiving a feather clamp. Utilization of the fletching jig permits the simultaneous application of two feathers to an arrow shaft, the application of a total of four feathers to a shaft, as well as the ability to use the same jig to apply left wing feathers or right wing feathers to a shaft.

Abstract: A pressure plate for a self-energizing disc brake of the spreading type is provided with angularly spaced integrally cast ears which project inwardly from the inner peripheral edge of the plate, and a recess or dimple is also cast integrally in each ear in the face of the ear adjacent to the braking face. A region of each ear outwardly of the recess or dimple defines an abutment face forming an anchorage for one end of an anchorage portion of a tension return spring with the recess or dimple accommodating the free end of the anchorage portion. In a modification each abutment face may be machined in the respective ear by turning down the ear over an arcuate area passing through the center of the recess or dimple and using the braking face as a datum.

Abstract: In a self-energizing disc brake of the spreading type the angular position of a pressure plate in a retracted "brakes-off" position is determined by an adjuster member comprising a cam which cooperates with the plate and of which the relative position is adjustable. The cam is carried by a cam shaft which is radially or axially arranged, and is accessible from the exterior of the housing of the brake. The cam may be incorporated into and comprise the stop abutment for arresting angular movement of one of the plates when the brake is applied.

Abstract: A unitary removable storm window assembly contains a window pane, a perimeter frame, and at least one side channel. The storm window assembly is unitary in that the side channel is interlockable with the perimeter frame so that the various components are fixed in relationship to one another even when the window is not in use, that is not installed. The storm window assembly contains at least one spring for urging the side channel away from the window perimeter. Thus, when placed within the jambs of an existing building or home window opening, the unitary window assembly is frictionally retained therein by the channels. The engagement is thus free from securing guides, tracks, and the like, and the entire window assembly is readily removable as a unitary structure within a matter of seconds.