A plummet for ascertaining verticality is described, comprising a disc-shaped body having a central aperture. The disc is suspended by means of a line in a position radially parallel to the ground or work surface. Upon lowering it to rest on the ground, marking of the point of verticality may easily be effected at the center of the aperture. The plummet may be used in combination with an accessory plummet disc of substantially the same diameter as the suspendable plummet and which serves as a ta...

A head support system for supporting the user's head in an at least generally upright disposition, while the user, for example, naps or sleeps or otherwise rests while traveling sitting in a seat. The head support element (1) interfaces with the underside of and, preferably, up and around the front of the chin, i.e., the mental proturberance with its central clef, and underneath the user's chin and from side-to-side of and along side the chin, i.e., the mandible body, in "face-to-face" surface e...

A stretch-forming machine of the type wherein a pair of opposed curving jaw assemblies grip opposite end edge portions of a metal sheet for initially stretching the metal sheet into a yield state and forming the metal sheet into a predetermined curved configuration. Each jaw assembly includes a jaw having an array of adjacent grippers or groups of grippers moveable relative to each other to define a part of the curve of the jaw and adapted to extend along one side edge of the metal sheet from ad...

A semiconductor integrated circuit device includes in a substrate a P-type well region containing a memory array section in which dynamic memory cells are arranged in a matrix. The P-type well region is fed with a back bias voltage whose absolute value is reduced so as to be the most suitable for the refresh characteristics. Also included is a P-well region wherein there are formed N-channel MOSFETs of a peripheral circuit this P-well region is fed with a back bias voltage whose absolute value i...

An adjustable headrest that provides both support and comfort to the user and one that can be used in connection with furniture including household and office furniture and also in connection with various types of passenger vehicles. The headrest includes slide means for permitting easy height adjustment of the headrest and also includes locking means for securely locking the headrest in a desired elevated position. Further, the headrest includes easily adjustable, wing-like, side-support member...

An adjustable headrest that provides both support and comfort to the user and one that can be used in connection with furniture including household and office furniture and also in connection with various types of passenger vehicles. The headrest includes slide means for permitting easy height adjustment of the headrest and also includes locking means for securely locking the headrest in a desired elevated position. Further, the headrest includes easily adjustable, wing-like, side-support member...

An apparatus for reforming an annular end sealing surface of a molded plastic container includes a head having an annular contact surface and a drive for bringing the annular contact surface into contact with the annular end sealing surface of the container. The head and the container do not rotate relative to each other during this contact reforming operation. Heat is applied through the contact surface to the end sealing surface while the surfaces are in contact to raise the temperature at the...

A protective device that can be placed on an edge of a glass object such as a vehicle window has a relatively flexible elongate cylindrical body. The body has an exterior surface terminating at a pair of opposed ends, a longitudinal axis, and a length between the opposed ends in a direction of the longitudinal axis. The body also has a glass receiving slot that extends between the opposed ends in the direction of the longitudinal axis. The slot has a pair of opposed and spaced apart slot walls t...

A carrying device for transporting an infant child is disclosed. The carrier may be worn on the user's back or may alternately be fitted to the user so that the infant is carried in front. The carrier includes a pair of adjustable shoulder straps to be worn by the user and also has an adjustable waist band. The outer jacket of the carrier is formed of heavy fabric such as canvas or twill and has an adjustable head support at its upper end. Inside the carrier is a seat-member which may be lowered...

Plastic pipe is continually produced from a curable resin on a plurality of horizontal mandrels which are repeatedly simultaneously moved between plastic pipe production stations. There is at least one station for applying resin to a mandrel, at least one station for curing resin on the surface of a mandrel, and at least one pipe removal station for removing pipe from a mandrel. The pipe stations are substantially radially equidistant from a central horizontal axis and are circumferentially spac...