Abstract: A method of holding and unfolding a drop type belt loop while it is being stitched to the waist band of a garment and the apparatus for accomplishing the same.

Abstract: A diving mask comprising an eyeglass mounting frame; an outer frame made in two pieces which can be connected together by means of coupling members; and a rubber face piece provided with a front aperture, the peripheral rim of which overlaps the outer rim of the said eyeglass mounting frame, and is clamped between the outer rim of the said eyeglass mounting frame and the internal rim of the said outer frame; and fastening means on the outer frame and on the eyeglass mounting frame for fastening the said members together at least in correspondence of the mask median axis.

Abstract: The shift mechanism is incorporated into the handlebar stem which goes into the front fork stem.

Abstract: Porous wound cartridge filters comprising a tubular element defined by superposed windings of a continuous yarn bundle, the surfaces of which are modified with cationic colloidal silica.

Abstract: A hydraulic shock absorber has an adjustable connection to the exercise lever to provide variable resistive forces to exercise, and alternately the shock can be mounted to the exercise lever as a dead weight and a pulley-cord system added, so that a multiplicity of exercises can be performed with the same basic unit.

Abstract: The head of the tennis racket has an oblong, oval shape so that the strung ball hitting area has a length to width ratio of about 1.75:1.

Abstract: 4.times.8 Plywood sections are interconnected by a system of tabs and latches, and a spring suspension system is provided beneath the interconnected sections.

Abstract: An articulated arm having first and second pairs of parallel spaced apart pivotable linkages associated with a tire casing holding fixture for moving an array of ultrasonic transmitting transducers to and from a location exterior to the tire casing and a location between the two sidewalls of the tire casing with the faces of the transducers being a predetermined spaced distance from the interior surface of the tread bearing portion of the casing. Only a single piston/cylinder type actuator linked to the arm is required to achieve the desired movement and positioning of the transducer array.

Abstract: The invention relates to a gymnastic balance beam of extruded aluminum with a bottom and end closures. The beam is of a general U-shape with the bottom plates secured to a flanged portion of the beam. The beam can be selectively covered with padding if desired.

Abstract: A current sensing circuit that controls a contactor that connects a load to power lines. The circuit provides an initial momentary delay period after energization of the circuit and before operation of the contactor to permit transients and other short duration anomalies to die out. An immediately succeeding second momentary delay period during which the contactor operation cannot be changed, assures that an initial inrush of current to the load will not cause a fault signal to erroneously operate the contactor. When a fault signal does cause the contactor to be operated, the circuit cannot be set back to its intended operation condition until energization of the sensing circuit is manually interrupted and reestablished. During normal operation of the circuit when current on the power lines is within acceptable limits, the circuit is latched in its proper operating mode.

Abstract: A novel method and apparatus for making elastomer sheet utilizing a novel extruder in combination with novel calendering apparatus.

Abstract: A dual-crank type upper body and arm exerciser attachment readily attachable to existing exerciser bicycles, and in which the drag brake for the arm exerciser comprises an incompressible sleeve of rubber or elastomeric material pressed against the crank arm shaft.

Abstract: Apparatus for simultaneously cutting both needle threads and both bobbin threads for a twin needle tacker or the like; the apparatus being mounted to the bottom of the throat plate and being removable with the throat plate as a single unit.

Abstract: A mechanical dead-man type control for the snow blower auger and wheels but without killing the engine.

Abstract: An automatic defrost system in which the actual defrost time of an evaporator coil, for example, is the controlling parameter for establishing a defrost cycle. The system automatically adjusts itself so that a predetermined amount of frost builds up in the frost accumulating period.

Abstract: An ergometric exerciser of the constant work type using a mechanical to electrical transducer as its basis is described. The exerciser is controlled by a single chip microcomputer and associated electronic interfacing means to perform a multiplicity of selected functions. For example, the ergometric exerciser provides; adjustable work loading from 300 to 2100 kpm per minute; a flashing indicator light to warn of a low pedal speed; a pulse rate measurement from 40 to 200 beats per minute; a sonic pulse alert system adjustable from 60 to 200 beats per minute; an accurate electronic start/stop timer adjustable from 1:00 to 60:00 minutes; and a microcomputer controlled work computer which accurately calculates work done to a maximum of 99,990 kpm. All of the above functions can be conveniently performed by virtue of a control panel and visual display which is very easy to use to accurately and efficiently perform the above functions.

Abstract: An apparatus for dispensing material, especially tobacco, in portions of predetermined weight from a stream of irregular density. A variable speed feed system passes the material through a measuring region where its density is monitored and the feed speed is automatically adjusted to compensate for measured variation in the density to provide discharge of portions of predetermined weight from the feed system at regularly spaced time intervals. The relative separation positions of the portions may be calculated by determining the weight of each portion from both the density information and the feed speed, separation of the portions being effected when the separation position previously calculated reaches the end of the feed system.