Abstract: A system (21) for holding a cord (28, 58) includes a retention device (20) which is adapted to engage a number of elements such as a hooded plug head (22), a handle of a power tool (51), a retainer (62) or a cleat (101). The device (20) includes spaced arms (25, 26) which engage the elements (22, 51, 62 or 101). In the embodiment wherein the element is the hooded plug head (22), the arms (25, 26) may have lugs (38, 39) thereon to engage apertures (42, 43) of the plug head (22) or the arms (25, 26) may be provided with apertures (47, 48) to receive lugs (49) formed on the plug head (22). The lugs (38, 39) and apertures (42, 43) are of the same general predetermined configuration so that when they are aligned with each other, the lugs (38, 39) can pass through the apertures (42, 43) but can thereafter be misaligned so that the device (20) is attached to the plug head (22).

Abstract: A system (10) for retaining a plug (11) carried by a cord (12) in a socket (17) of an electrical receptacle (13) includes, in one embodiment, a plate (14) mountable to the receptacle (13). The plate (14) has opposed lugs (19, 20) on each side of the socket (17). The lugs (19, 20) form opposed slots (21, 22) to receive flanges (32, 33) formed on one end of resilient arms (24, 25) of a retainer (15). In one embodiment, a retention device (27) is formed near the other end of the arms (24, 25) to hold the cord (12). A system (50, 80) for covering sockets (17) includes, in one embodiment, a cover plate (52) with deflectable tines (57, 58) received in the opposed slots (21, 22). Shoulders (54, 55) extend from the top of the cover plate to engage a top edge (68) of the lugs (19, 20). Locking head (62) extends from the end of the tines (57, 58) to engage a bottom edge (69) of the lugs (19, 20).

Abstract: A system (21) for holding a cord (28, 58) includes a retention device (20) which is adapted to engage a number of elements such as a hooded plug head (22), a handle of a power tool (51), a retainer (62) or a cleat (101). The device (20) includes spaced arms (25, 26) which engage the elements (22, 51, 62 or 101). In the embodiment wherein the element is the hooded plug head (22), the arms (25, 26) may have lugs (38, 39) thereon to engage apertures (42, 43) of the plug head (22) or the arms (25, 26) may be provided with apertures (47, 48) to receive lugs (49) formed on the plug head (22). The lugs (38, 39) and apertures (42, 43) are of the same general predetermined configuration so that when they are aligned with each other, the lugs (38, 39) can pass through the apertures (42, 43) but can thereafter be misaligned so that the device (20) is attached to the plug head (22).

Abstract: A system (10) for retaining a plug (11) carried by a cord (12) in a socket (17) of an electrical receptacle (13) includes, in one embodiment, a plate (14) mountable to the receptacle (13). The plate (14) has opposed lugs (19, 20) on each side of the socket (17). The lugs (19, 20) form opposed slots (21, 22) to receive flanges (32, 33) formed on one end of resilient arms (24, 25) of a retainer (15). In one embodiment, a retention device (27) is formed near the other end of the arms (24, 25) to hold the cord (12).

Abstract: A method and means are provided to releasably secure one or more filament lengths in place with a single piece molded polymer clamp device. Said clamp device employs frictional retention means which cooperate with openings to grip the filament or filaments.

Abstract: A method and means are provided to retain locked engagement for the plug end of an electrical cord. A coupling device is provided enabling the user to retain locking engagement for the electrically connected cord during ordinary usage.

Abstract: Fabric handling apparatus is provided to continuously unwind a fabric sheet being supplied from a supply roll at variable travel speeds for subsequent processing operations. The fabric sheet being unwound is accumulated in storage means enabling the fabric travel speed to be automatically and continuously decreased as fabric is being accumulated while also being automatically and continuously increased as the fabric sheet is being withdrawn from storage.

Abstract: A method and an apparatus are presented for forming couplings from blanks made from lengths of extruded plastic pipe, to join pipe together. The blank is cut from the length of extruded pipe and heated to the thermoplastic point. The heated blank is mounted between two mandrels which have a slight taper toward the ends, which are beveled. The ends of the mandrels are brought together inside the blank at a uniform rate and force. The pressure between the ends of the mandrels causes a bulge in the blank. A split die clamps around the blank at about the bulge, causing the bulge to collapse and forming a ridge in the inside surface of the blank. Coolant circulates in the mandrels and cools the inside surface of the blank. The mandrels are then withdrawn, leaving the formed blank in the split die.

Abstract: A method is presented for forming couplings from blanks made from lengths of extruded plastic pipe, to join pipe together. The blank is cut from the length of extruded pipe and heated to the thermoplastic point. The heated blank is mounted between two mandrels which have a slight taper toward the ends, which are beveled. The ends of the mandrels are brought together inside the blank at a uniform rate and force. The pressure between the ends of the mandrels causes a bulge in the blank. A split die clamps around the blank at about the bulge, causing the bulge to collapse and forming a ridge in the inside surface of the blank. Coolant circulates in the mandrels and cools the inside surface of the blank. The mandrels are then withdrawn, leaving the formed blank in the split die.