Abstract: Internal expanding collet clamp, wherein collet elements are moved axially over a cone to be expanded within a workpiece. The collet elements are fully supported when expanded. The clamp is actuated by a drawbar in the usual manner.

Abstract: Pipe bending mandrel wherein oppositely disposed pipe wall engaging elements are connected to a drive unit at one end by toggle elements permitting inward and outward movements of the pipe wall engaging elements, and wherein said pipe wall engaging elements are connected to a longitudinal axial shaft of the drive unit by plural axially spaced toggle elements which move the pipe wall engaging elements inwardly or outwardly upon reciprocating movements of the shaft in opposite directions.

Abstract: Rotary turbine ventilators, wherein the vanes are connected to the base ring of the rotary element by a crimping or swaging operation instead of by welding or riveting. The method of manufacturing the ventilators is particularly adapted to the manufacture of aluminum ventilators because of the saving of labor and cost which results when aluminum ventilators are made thereby, although the method may be used to manufacture ventilators of other materials.

Abstract: Pipe wrapping apparatus of the so-called hand-wrapping type, having a rotating ring structure which carries spindle apparatuses, each carrying a roll of pipe wrapping tape. The apparatus includes take up spindles for accumulation of the backing stripped from tapes which have backing, and includes brake devices for controlling the tension at which the tape is wound onto the pipe. While the apparatus is of the so-called hand-wrapping type, it may be power driven. The apparatus also provides for applying a coat of primer or other precoating material onto the pipe prior to the application of the tape. A notable feature of the invention is the provision of self-balancing spindles through the use of which the tape is consistently applied to the pipe without wrinkles or other misalignments of the tape and with uniform overlap of courses.

Abstract: Pipe handling apparatus for pipe laying barges, sometime called lay barges, wherein pipe is lifted from an incoming pipe conveyor to a transverse rack, from one rack position to another, and from the rack to the pipe line-up conveyors, by a series of pivotal lifting means which lift, move, and deposit the pipe without impact or shock, whereby the pipe and any concrete or other coating on the pipe is not damaged. In addition to the novel pipe transferring means, the invention presents a novel universally adjustable line-up conveyor apparatus.

Abstract: Intracranial pressure transducer System, wherein a holding bracket containing and supporting sensor elements of the apparatus is surgically positioned, through an opening in the skull, against the dura of a neurosurgical patient. The elements within the holding bracket transmit signals in the form of radiated electromagnetic waves to a receiver located outside the body of the patient. The received signals may be recorded on magnetic tape, may be converted to audible sounds, and/or may be recorded on charts, or otherwise suitably preserved and/or presented for use in monitoring the intracranial pressure of the patient.

Abstract: Pipe handling apparatus for pipe laying barges, sometime called lay barges, wherein pipe is lifted from an incoming pipe conveyor to a transverse rack, from one rack position to another, and from the rack to the pipe line-up conveyors, by a series of pivotal lifting means which lift, move, and deposit the pipe without impact or shock, whereby the pipe and any concrete or other coating on the pipe is not damaged. In addition to the novel pipe transferring means, the invention presents a novel universally adjustable line-up conveyor apparatus.

Abstract: Pipe wrapping apparatus, having one or more pipe wrapping tape spindles with each of which is associated a take up spindle onto which tape backing is wound after the backing has been stripped from the tape as the tape is wound onto the pipe.

Abstract: Ventilators for mobile homes, and the like, particularly of the type which have an attic space beneath the roof and above the ceiling of the mobile home interior. The ventilator has an intermediate air intake for ventilation of the attic space, so that the ventilator may be used to ventilate both the interior of the mobile home and the attic space.

Abstract: Apparatus for scraping the interior sides of the walls of pipes, having retractable scraper elements at each end of a carrier body or at only one end thereof. The scraper apparatus is preferably moved in both directions through a pipe, the trailing scraper elements preferably being retracted during movement of the apparatus in each direction. The apparatus is particularly designed for removal of coating materials such as cosmoline from pipes before use of the pipes in pipelines.

Abstract: Pipe handling apparatus for pipe laying barges, sometime called lay barges, wherein pipe is lifted from an incoming pipe conveyor to a transverse rack, from one rack position to another, and from the rack to the pipe line-up conveyors, by a series of pivotal lifting means which lift, move, and deposit the pipe without impact or shock, whereby the pipe and any concrete or other coating on the pipe is not damaged. In addition to the novel pipe transferring means, the invention presents a novel universally adjustable line-up conveyor apparatus.

Abstract: Internal mandrel for use in bending the ends of pipes, wherein a hydraulic cylinder actuates a system of levers and toggles to apply force across the interior of an end of a pipe in the direction in which the pipe is to be bent to prevent distortion and collapse of the pipe during bending adjacent to its ends.

Abstract: Apparatus for brush-cleaning the interiors of pipes, wherein rotative brushes are carried by a rotative carrier plate. The brushes are rotated by air motors, and rotate at very high speeds. The brushes are spring-loaded to consistently bear against the inside of the pipe wall, and are disposed at a small angle from radial which results in reduced brush wear and more efficient pipe wall cleaning.

Abstract: Automatic damper having pivotal semi-circular vanes which are moved to open position by pivotal movement of a longitudinal element disposed along the central gap between the vanes. The movement of the longitudinal element is controlled by a temperature responsive element. Retraction of the longitudinal element causes closing of the vanes. A J-slot arrangement locks the vanes in open position.

Abstract: System for laying pipe, wherein elongate flat sheets of metal are formed and welded to form pipe and wherein the pipe may be discharged for laying in a vertical direction or in a horizontal direction, or in any angular direction therebetween. The apparatus is mounted on a support vehicle or structure capable of traveling over water or land from which the pipe is discharged for laying.

Abstract: Adjustable diffusers of the type employed for control of flow of air into or out of a space. The diffusers according to the invention have a louvered face plate and have plural parallel vanes behind the face plate each movable between closed and opened positions. The diffusers have interchangeable control plates which have J-slots to control the vane positions and by substitution of which the directions of rotations of the vanes may be altered. The diffusers are of simplified design as compared with present commercially available diffusers.

Abstract: Pilot valve, of the quick opening and quick closing type, actuated to open or close by a hydraulic fluid acting on a piston.

Abstract: Force maintaining toggle systems wherein maximum or near maximum force is maintained by a series of step wise toggle engagements. The forces may be applied between spaced objects arranged oppositely or circularly.

Abstract: Method and apparatus for installing insulation, wherein insulation carried in a roll is held by a carriage which rolls along structural members of a building, the insulation being unrolled and moved downwardly from the carriage to a vertically disposed position at the location of a wall of the building for installation. The carriage is then moved to an adjacent position and another vertical strip of insulation is unrolled and moved to a position parallel to the first strip for installation. Provision is made for tensioning the insulation strips as they are installed to eliminate wrinkling.