Abstract: This invention is directed to a variable air volume cooling system for a building which utilized changes in the diameter of the belt going around a two piece driver pulley and a follower two piece driven pulley to effect changes in fan speed and, accordingly, the air volume supplied. A control means to operate a servo-motor connected to the driver pulley provides for separating the two piece driven pulley to slow the fan, driving the two pieces of the driven pulley together to speed up the fan, and for maintaining the same speed should a desired temperature range be obtained. The control compares the temperature of the area to be cooled with the speed of the fan to produce its outputs. Deadband operation is provided to eliminate toggling and other excesses of output reversals.

Abstract: A speed change mechanism of the type having a gear change yoke actuated by a travelling ball nut on a screw includes a load-bearing saddle slidably mounted over the nut. The saddle provides for avoidance of radial loads on the nut and screw via the yoke, while allowing for transmission of axial loads between said members. The yoke moves between first and second limits of movement and contains a provision for relief of axial loads to the nut and screw whenever the yoke is positioned at either of said limits.

Abstract: A full-floating axle drive assembly for propelling a vehicle includes a shaft having a splined end to which a splined drive member is axially and non-rotatably secured. The drive member is secured to the splined end of the shaft between the bottom of the shaft splines and a forged flange end. In a preferred embodiment, the shaft extends through an axle tube on which a wheel hub is fully supported by bearings. The drive member is secured to the wheel hub which is rotated thereby about the axle tube.

Abstract: Apparatus for driving a clutch plate includes a drive pin comprising a shank and a drive head rotatably mounted thereon. In a preferred embodiment, an intermediate clutch plate of a two-plate heavy duty clutch is axially but non-rotatably movable with respect to the clutch flywheel. The flywheel contains an axially extending annular flange from which the aforesaid shank fixedly extends radially inwardly. The drive head, rotatably mounted thereon, is disposed within a recess of the clutch plate for driving engagement of the plate. The apparatus provides a self-aligning clutch plate drive system which substantially minimizes the declutching failures experienced in conventional non-self-aligning drive systems. A friction member resiliently holds the drive head to the drive pin shank for ease of handling and installation of the apparatus. Typically, clutch plate drive recesses comprise slots having radially extending walls positioned parallel to the clutch plate axis of rotation.

Abstract: A grinding fixture provides for grinding a pair of oppositely positioned complementary ball engaging meridian race grooves in the external surface of the inner race member of a constant velocity universal joint, wherein the race grooves are characterized by offset centers. The fixture, adapted to receive and contain the inner race member for grinding, is engageable with, and rotatable between, headstock and tailstock members of a grinding machine. In a preferred embodiment, the fixture incorporates a slide assembly which is reciprocated between two offset parallel centerlines during grinding of a race member contained within the fixture.

Abstract: A rotatable housing for a magnetic clutch contains a circumferential mounting portion thereon for receiving a rotary member, as, for example, a spool of recording tape. The mounting portion defines a surface therearound which contains detents for axially locating the rotary member on the latter surface. In a preferred embodiment, the detents are arranged in clusters about the circumference of the mounting surface, each cluster including at least two detents axially spaced, each detent defining a circumferentially extending protuberance on the mounting surface. In an alternate preferred embodiment, the mounting surface also includes a drive tang for limiting movement of the rotary member to one direction only, the drive tang defining an axially extending protuberance on the mounting surface.

Abstract: A variable speed clutch drive for light vehicles, e.g. motor bikes, snowmobiles, etc., responds to both engine speed and torque. The drive includes a conical pulley system of driver and driven pulleys coupled by a continuous V-belt. The driven pulley includes torque responsive means which utilize fixed and movable discs, the fixed disc containing radially arcuate apertures circularly disposed about its center of rotation. The discs are biased together by a spring system which includes a spring cover containing at least one integral cam for sliding contact with at least one aperture in the fixed disc.

Abstract: A limited slip differential includes a mechanism for producing a varied bias ratio as a result of changes in side gear torque. An annular drive flange is biased toward frictional locking means within the differential case to provide biasing as required. The flange contains a first cam surface mateable with a second cam surface disposed on the back face of one of the side gears. Either the first or second cam includes a variable pressure angle, whereby a varied biasing force is developed on the drive flange as the side gear moves relative to the flange via changes in side gear toque.

Abstract: A check valve provides improved lubrication of a bearing contained within a gear. The check valve is positioned within a bore in the gear, the bore extending radially inwardly from the gear teeth to the bearing. In a preferred embodiment, a ball check valve is contained in a transmission drive gear, the gear containing a pocket bearing. The ball of the check valve is held against the check valve seat by centrifugal force created by the rotation of the drive gear. As the drive gear teeth mesh with those of a countershaft gear, pulses of transmission oil are forced into the bore, intermittently unseating the ball against centrifugal force to provide a continuous supply of oil to the pocket bearing.

Abstract: A centrifugal lubrication system provides lubrication oil flow to a transmission pocket bearing. Splash and spray lubrication oil is directed from the transmission casing to a collector region along a shaft adjacent the pocket bearing. As the shaft rotates, theoil is centrifugally thrown from the collector region into a receiving trough defined by (a) a lubrication port extending through the shaft, and (b) an oil ring fixed to the shaft radially of the collector region at the lubrication port entrance. From the trough the oil flows through the port exit to the pocket bearing.

Abstract: A free floating coupling device for use between drive and driven shafts, which coupling device consists of a clutch portion on each shaft, which clutch portions are held in spaced apart relation by a tubular member which serves as a bearing lubricant chamber. The coupling allows power to be transmitted from the drive shaft to the driven shaft, even when a slight mis-alignment exists between the shafts. The anti-friction bearings allow full torque to be exerted between the shafts.