Abstract: New and improved bolt assemblies for M4/M16 firearms capable of firing a remarkably greater number of rounds than previously available M4/M16 firearms are, disclosed that have right and left compression springs that are parallel to each other, straddle the firing pin bore and are retained in partial bores that have proximal and distal ramps descending from their open ends. Additionally, these bolt assemblies advantageously (A) have the extractor pivot pin receiving lug is positioned at the longitudinal center of the mass of the extractor, (B) walls of bolt lugs on the firearm bolt are angled tangent to full radius fillets joining adjacent bolt lugs, (C) the extractor contains a ceramic ball and a captive rubber spring to bias such ball against the extractor pivot pin to retain it in the receiving lug and (D) lugs on the barrel extension are angled tangent to substantial radius fillets joining them.

Abstract: Detachable ammunition magazines for firearms, particularly conversions of M16/M4 series rifles to utilize AK47 magazines, are provided with improved bolt catch actuators. These new bolt catch actuators have an elliptical opening though the upper end of the proximal wall that extends into the rectangular cross-section passage within the firearm magazine. A wire spring defined by an upper free-end and a lower fixed-end is cantilevered by its fixed-end to the right side plate of the magazine follower for movement with the follower in a manner that enables the free-end of such wire spring to project through the opening when the follower reaches its apogee. As the wire's free-end passes through the opening it engages the bolt catch of the firearm causing the bolt to be retained in its open position after all the ammunition in the magazine has been fired.

Abstract: New multifunctional muzzle attachments for firearms providing substantial improvement in shooting accuracy in comparison with prior known muzzle attachments are disclosed that simultaneously provide a combination of four different functions, namely, (1) compensate for gun rise (aka muzzle climb), (2) serve to reduce recoil (aka muzzle braking), (3) reduce flash around the muzzle when the firearm is fired (flash hiding) and (4) an interface for a suppressor. This is made possible by the unique combination of (a) a slotted baffle fixed in the distal end of the new cylindrical attachments and (b) a plurality of longitudinal narrow slots between the distal and proximal ends spaced apart around and through the peripheral cylindrical wall.

Abstract: A tow system is disclosed for towing small four-wheel vehicles having handlebars for steering and equipped with a front luggage bar assembly, e.g. an ATV, behind a van or other tractor vehicle. Such tow system includes a tow bar portion that connects to the front luggage bar assembly, a hitch portion that is fixed to the central rear end portion of the tractor vehicle and spring members connected to the left and right handlebars elastically biasing the four wheel vehicle to move straight ahead. The tow bar portion includes an elongated flat metal bar with a lateral bent end and an angle member is adjustably fastened to the metal bar to provide a reception space to hook onto the front luggage bar assembly of the towed four-wheel vehicle. A mounting plate in the hitch portion is fastened the tow bar portion to allow horizontal movement between the flat metal bar and the mounting plate to accommodate turning of the tractor vehicle.

Abstract: Reduced propellant ammunition cartridges, particularly subsonic cartridges for clandestine use of weapons which normally fire supersonic projectiles, include a length of pliable tubing that has an outside diameter just slightly smaller than the inside diameter of the cartridge neck portion that holds the projectile with such tubing having a length that allows it to snugly fit between the base of the cartridge case and the cartridge neck portion. Such a sized tube is inserted through the neck portion and then its distal end is expanded below the cartridge neck portion to be held captive in the cartridge case. The propellant charge is contained inside the pliable tube by the rear end portion of the casing at its distal end and the projectile at its proximal end.

Abstract: A firearm safety device for a magazine type firearm structured for insertion into the cavity opened in said firearm when the magazine of said firearm is removed has a lock base, a locking bar and a pair of locking rods. The lock base is formed of a first half and a second half fastened together defining therebetween a quadrilateral space and the locking bar is moveably retained in that quadrilateral space with its proximal end extending outside the lock base to enable it to be reciprocated relative to the lock base and the locking rods are moveably retained in the lock base to be moved by the distal end of the locking bar between a latching position to lock the safety device in the firearm cavity and an unlatching position to allow the safety device to be removed from such cavity.

Abstract: Cable and wire cutters of new design have an outside cutter member containing an arcuate cavity within which an inside cylinderical cutter member rotates about a common pivot axis so separate cutting slots in the outside and inside cutter members cross during the cutting operation within the circumference of the inside cutter thereby remarkably improving the mechanical advantage in these new cutters as compared to the prior art because cutting of the work piece occurs closer to the common pivot axis of the cutting slots than has been possible with prior known cable and wire cutters. A variety of specific embodiments of the new cutter design are disclosed.

Abstract: A new method for the production of decorative designs on substrates, e.g., furniture and building walls, basically includes the steps of (a) providing a design printed on a flat release sheet, the design comprising a picture side in contact with the release surface and an exposed back side, (b) applying to an exposed surface of a substrate an imprint layer of imprint material, (c) contacting the exposed back side of the printed design with the external surface of the substrate layer, (d) imprinting the design into the substrate layer, and (e) removing the release sheet leaving the design imprinted in the layer with its picture side exposed. Alternatively, the method may include the step (f) of covering the picture side and any portion of the substrate imprint layer not covered by the design with a clear durable coating. An embodiment using two or more designs on separate release sheets with seriatim imprinting to produce dimensional effects is disclosed.

Abstract: A parallelogram boom device for mounting agricultural implements has a parallelogram arrangement of a first upper beam horizontally and longitudinally aligned with a second upper beam plus a single lower beam longitudinally aligned with the first and second upper beams, but at a lower horizontal level. A first hydraulic piston unit acts via a bridle to raise and lower the parallelogram arrangement relative to the ground. An agricultural implement is attached at one end to a mounting arm supported via the parallelogram arrangement and a second hydraulic piston unit serves to move the implement in an arc about its attached end. The new boom devices also have the capability of retracting the supported implements rearwards from their forward direction of travel in the event the implement encounters a rock, stump or like obstruction.

Abstract: Sheathed knives are disclosed that have a blade that is ejected via a button triggered spring longitudinally from the sheath into a locked use position in which the sheath then serves as the handle for the blade in the nature of a dagger, an elongated handled rod that slides within the sheath to draw the blade from its use position back into the sheath where it is automatically locked in a spring loaded sheathed position for triggered release into its use position and safety features to prevent the blade from accidental movement in or out relative to the sheath.

Abstract: New types of fiberoptic microbend sensors are in the form of flexible tapes wherein single or multiple layers of mechanically tough flexible tapes form two outside surfaces of the sensors including between them one or more continuous elongated optical fibers, a variety of monofilaments, wires, threads, meshes, ribbons and or like elements to act as deformers to the optical fiber and sufficient adhesive material to form a permanent flexible tape structure. Additional layers of film, optical fibers, and/or deformer elements may be included to augment or modify the intensity of light that issues from the output end of the optical fibers when they are illuminated at their input end while the surface films of the sensor are subjected to pressure, such as when the sensors are used to weight or detect passage of automobiles. Detection or measuring systems and methods using the flexible sensor tapes are disclosed.

Abstract: A system for applying pressure sensitive adhesive labels from a feed web with high position precision onto flat uniform size articles mechanically links the advance of the article to be labeled and the advance of the current label to be applied in unison, so that forward advancement speed of the article and the current label are matched exactly, independent of any speed variation in the application system. This is accomplished using a label following member that comes to rest at the trailing edge of a succeeding label and is freely allowed to follow the succeeding label as it advances on the web spaced downstream of the current label. Such following member is mechanically coupled to a pusher which advances the article to be labelled in the precise speed and relative location of the current label as it advances, thereby accurately placing the current label on the article as it peels from the continuous support web.

Abstract: Improved rail adapter systems which enable firearms, including M16 type rifles and carbines, without any changes to the weapon except the handguard, to support accessory devices effectively even under combat conditions are provided via the invention by modification of the top semicylinderical part of the rifle's handguard attachment to include an elongated leaf spring arrangement in the front end and a unique rear clamp arrangement at the back end thereof so the leaf spring and rear clamp combination operate to compensate for thermal dimensional changes and combat abuse problems to maintain proper alignment of accessory devices attached to the weapon.

Abstract: Folding knives having a longitudinal sheath handle with a channelled body portion into and out of which a blade pivots about an axis normal to a common plane of the handle and blade between a sheathed position within the handle through an arc to a use position external of the handle and a lock to automatically lock the blade in such use position upon completion of the unsheathing movement, which lock is manipulated for manual return of the blade from its use position to its sheathed position are improved by addition of a double action feature provided by an actuator unit that is cocked by manual rotation of the blade from the use position back into the sheathed position and a trigger to uncock the actuator unit for automatic quick forced rotation of the blade from its sheathed position all the way to its use position.

Abstract: Plow type anchors that include a fluke and an arcuate shank having a long leg portion and a short leg portion that attaches the long leg portion to the fluke are improved by being provided with a plurality of hitch members spaced apart longitudinally along the long leg portion enabling an anchor line to be attached to the anchor at different positions along the arcuate shank to thereby provide a plurality of attack angles at which the anchor will enter and proceed into the mooring bed during an anchoring operation employing the anchor.

Abstract: Highway and road maintenance costs and time are greatly reduced by an improved method of removing the typical mound of earth that accumulates along the edges of the roadway by providing an earth moving blade defined by a lengthwise bottom edge, a forward side edge, a rearward side edge and a front face, providing at the rearward side edge of the blade a dirt distribution device that includes a motor driven dirt sling unit, positioning the blade diagonally across the mound with its bottom edge penetrating the mound to slightly above the top surface of the road, moving the blade forward to move the portion of mound immediately in front of the blade across its face toward its rearward side edge, and rotating the dirt sling unit while allowing the earth ribbon to contact the sling unit thereby to disintegrate the ribbon into small pieces of earth that are thrown away from the rearward side edge of the blade.

Abstract: An improved locking unit is disclosed for outrigger devices that are installed on a T-top equipped motorboat that has an outrigger pole supported by its inboard end above the T-top and which permits the outrigger pole to be rotated from a stowage position to a trolling position and vis versa by a person safely standing in the motorboat in the shelter of the T-top by manipulation of an improved locking unit which includes (a) a tubular member that extends through the T-top, (b) an arcuate tube, that supports the inboard end of the outrigger pole, is rotatably carried in the tubular member and has a radial hole in its lower end, (c) a locking collar fixed to the bottom end of the tubular member and having a quadrant long horizontal slot in its middle portion, (d) the inside end of a pin member extends through the radial hole & the horizontal slot and its outside end has a shackle, (e) a lever rod is pivoted at one end to the shackle and (f) the locking collar has indexing lugs to retain the lever rod in differe

Abstract: An improved locking unit is disclosed for outrigger devices that are installed on a T-top equipped motorboat that has an outrigger pole supported by its bottom end portion above the T-top and which permits the outrigger pole to be moved by rotation of the lower end portion from a stowage position to a trolling position and vis versa by a person safely standing in the motorboat in the shelter of the T-top by manipulation of locking unit. Such locking unit includes (a) a tubular member, (b) a cylindrical collar fixed to the tubular member, (c) an indexing ring carried on the collar and having a plurality of side opening cavities, (d) a compression feature on the indexing ring selectively to prevent or permit such ring's rotation on the collar, (e) a rotation ring carrying a locking lever and (f) an arcuate tube that supports the bottom end of the outrigger pole is rotatably carried in the tubular member and is pinned to the rotation ring.

Abstract: New water base pressure sensitive adhesives with capability of use in production of high temperature quality masking tape are aqueous dispersions of the following mixture of components in the percentages by weight as specified:______________________________________ Component Percentage ______________________________________ Adhesive entity 45 to 65 Tackifier resin 20 to 40 Plasticizer 1 to 20 Stabilizer 0.1 to 10 Curing entity 0.1 to 10 Optional additives 0 to 20 ______________________________________The various components constitute the disperse phase of the aqueous dispersion and have a combined weight of between about 30 to 70% of the total weight, the curing entity is a combination of a plurality of curing agents that exhibit different curing speeds and the adhesive entity is a combination of a plurality of adhesive elastomers having different molecular weights.High temperature quality masking tapes made from the new PS adhesives avoid "freeze down" and "ghosting".