Abstract: An ablation system includes a catheter adapted to be inserted into the heart of a patient. The catheter has a distal end and a plurality of electrodes disposed adjacent the distal end. One of the electrodes being an ablation electrode. An ablation RF energy source connected to the ablation electrode, a patient interface is connected to at least some of the electrodes for acquiring intracardiac ECG signals and a stimulator is connected to the catheter for providing pacing signals thereto. A phase balanced all pass filter is connected between the catheter and the patient interface for suppressing the interference to the intracardiac ECG signals by the RF ablation energy signal.

Abstract: A lawn mower has a hydraulic motor mounted on each drive wheel and each motor is independently driven by a separate pump. Each pump includes a control lever for regulating fluid pressure and flow direction so that each wheel may be driven independently in the forward and reverse directions and at varying speeds. A speed control index is mounted on one side of the mower for releasably setting and maintaining the speed control levers in a plurality of equal forward speed positions so that the operator can preset the maximum forward speed. In addition, an individual speed control lever is mounted on each handgrip and each is independently coupled to one of the control levers for individually adjusting each wheel for speeds less than the preset maximum or for setting either wheel drive pump in neutral or reverse. A neutral control assembly returns the pump control levers to a neutral position when the control levers are moved into neutral.

Abstract: A perpetual calendar displaying selected faces or sides of a minimal number of parallelepiped blocks for displaying the year, the days of the month, initial numbering of the weeks of the year and the months of the year spelled out in a choice of several languages.

Abstract: A support for a cantilevered object comprises support member having an X-shaped configuration defined by a central portion and a pair of a spaced apart lower arms attached to the support from which the cantilevered object extends and a pair of spaced apart upper arms constructed and arranged to be secured to the cantilevered object intermediate its ends. The member extends upwardly and outwardly from the support and is curvilinear from its lower to its upper end.

Abstract: A lawn mower has an engine coupled by a transmission to drive wheels and by a belt drive to cutter blades. A cutter blade clutch lever is coupled to the belt drive and a shift lever is coupled to the transmission for respectively shifting the transmission and belt drive between neutral and drive positions. Safety interlock levers are mounted adjacent the lawn mower handles and each has a hand grip which is arcuate in cross section and engageable with and complementary to the mower handle hand grips. Each safety interlock hand grip is mounted on a control rod which is pivotable from a first position to a second position wherein the hand grips are located beneath and nestled against the mower handle hand grips.

Abstract: A container in which minerals such as copper are purified in an electrolytic process includes bottom, end and side walls for containing a corrosive electrolyte, such as, a sulphuric or hydrochloric acid solution. The bottom, end and side walls of the container are composed of a cured mixture of 10-19 percent of a modified, vinylester or polyester thermosetting resin and the balance consisting of 1/4"-1/64" inch crystalline silica, fine silica sand or silica flour and glass beads approximately four microns in size and/or mica flakes about 1/64" in size. The container is formed in a continuous pouring process and includes non-conductive reinforcing rods.

Abstract: A reversible fixture mount for use with siding for a building structure and comprising a pair of mating members, each member including a base having front and rear faces, side walls extending from the base and a flange extending outwardly from the margin of the side walls opposite the base. Each member is a mirror image of the other except for a groove on one member which engages a support on the other to define a lap joint. The support extends from the rear face of the base to a plane defined by the flanges to provide support for the central portion of the base when the flange has engaged the building structure, the front faces of the members defining a second plane parallel to the plane defined by the flanges and the support.

Abstract: A velocipede such as a bicycle or tricycle includes a drive sprocket mounted on a frame for adjustment between a plurality of positions defining an arcuate path having an axis of curvature. A second sprocket is rotatably mounted on the axis and is coupled to the drive sprocket by a first chain. A third sprocket is mounted coaxially with and is coupled to the second sprocket for rotation therewith. A fourth sprocket is mounted on the rear wheel and coupled to the third sprocket by a second drive chain.

Abstract: A wig comprises a soft plastic, impermeable cap individually molded to be complementary to the scalp of the intended wearer. A conventional wig is attached to the cap by a coupling consisting of a first strip of a feltlike material and a second strip of a material having a plurality of hooklike projections which is known as Velcro. One of the strips is attached to the cap and extends from front to rear and the second strip is affixed to the underside of a conventional wig.

Abstract: A self-regulating warmer device which is especially suited for the food service industry. Such devices are suitable, for example, for keeping wrapped or unwrapped food products at a desired holding temperature between the time the food is prepared and the time it is delivered to the customer. The warmer device includes a plate on which the food is held and a self-regulating warmer element beneath the plate to keep the plate at a uniform temperature. The plate is preferably used with spaced apart infra-red convection heaters such as those commonly used in fast food restaurants, and provides even food heating regardless of the changes in ambient conditions, the number of food products located between the infrared heater and the plate and provides dramatic reductions in power usage. Moreover, heat losses which occur at the edges of the plates now used for these applications are reduced and localized hot or cold spots are eliminated.

Abstract: A spirally-wrapped reverse osmosis membrane cell employing an envelope of semipermeable membrane sheets spirally wound or wrapped about a tubular mandrel. The convolutions of the membrane assembly are separated to form an open channel, directed feed flow path leading into a lateral opening or series of openings in a communicating tubular member defining an unobstructed bore throughout its length. The feed separator may comprise a plurality of substantially parallel strips of impermeable material of a thickness sufficient to provide desired separation between membrane sheets and wherein the strips define a meandering fluid flow path throughout the length and width of the membrane sheet.

Abstract: A sole or plantar surface for footwear which may be incorporated in a walking appliance or attachment for conventional ski boots, and wherein the footwear has been deliberately configured to retain a foot in a substantially rigid and inflexible manner which interferes with a normal walking gait. The surface configuration facilitates walking by including at least one roll point area spaced rearwardly from the forward end. The one roll point area lies in a plane angularly disposed relative to the longitudinal axis of the plantar surface and in a direction towards the medial surface of the footwear.

Abstract: A system is disclosed for determining the positions of a set of points on a body and comparing those points to a set of reference points. The system includes a data acquisition apparatus comprised of emitters, receivers, and microprocessor controls. The emitters are mounted at various predetermined positions on the body, for example a vehicle body or frame, and are triggered in an optimal fashion by the microprocessors. Triggering generates a single acoustic burst signal from an emitter. An array of microphones acts as the receiver. After generation of the signal, the microprocessor initializes an external clock which measures the travel time of the signal from the emitter to the receivers. By repeating this process a number of times, data is acquired which yields the three-dimensional coordinates of a given point when processed by a microprocessor.

Abstract: A fishing line release device includes a body adapted to be attached to a downrigger line and having a first guide adjacent one end of the body and a second guide axially disposed relative to the one end of the body for receiving the fishing line therethrough. Projections are disposed adjacent the one body end and about which the fishing line can be wound. A first magnetic member is positioned along the body and defines a path extending toward and away from the projections and a release lever assembly is pivotly mounted on the body adjacent the one end and is constructed and arranged such that when the lever assembly is in an unpivoted position a lever arm extends in a direction parallel to the path. A hook is formed on the lever arm adjacent the projections to hold the fishing line thereon and whereby a force on the fishing line tends to pivot the lever arm to move the hook to a release position thereby releasing said fishing line.

Abstract: A fuel gauge for a fuel tank wherein external components of the gauge are configured to substantially resemble a conventional fuel filler cap, and in particular, the invention provides a single chambered fuel tank, fuel gauge and fuel filler cap configured to retain the appearance of a conventional dual chambered tank having separate fuel filler caps, but wherein the present fuel gauge retains the outward appearance of one of the caps for which it is substituted upon conversion of the dual chambered tank to a single chambered fuel tank.

Abstract: A snow shovel has a blade and a handle extending therefrom. A pair of rollers are mounted behind the lower edge of the blade by an upwardly extending support arm which is mounted on the handle for longitudinal and rotational adjustment.

Abstract: A GRP ladder rack of which the longitudinal rails have a cross-sectional shape which is S-formed, the cross rungs of the ladder being glued and dowelled in the lower channel fo the S-form. A short length of rail can be used to splice ladders to each other end to end using pop rivets and epoxy glue.

Abstract: An adjustable platform for a rung ladder has a footplate which provides sufficient surface area to enable full contact by the users feet. A footplate support system enables the footplate to accomodate a range of angles of inclination of the ladder relative to the horizontal. The footplate support system is releasably secured to two parallel guides running length wise of the ladder, either as part of extruded ladder stiles or secured to stiles of an existing ladder, and is adapted to slide up and down the guides to engage the footplate with the desired rung of the ladder. Clamp means is provided to locate the footplate in the desired position.

Abstract: An incineration system utilizes a circular cross-section pyrolysis chamber in which waste materials are gasified. A flat cast iron hearth serves as the floor of the pyrolysis chamber and has a number of small holes which are raised above the general hearth level by a number of nipples. The bolted front head of the chamber has a vertically movable front door. When raised, the hinged door assembly may be opened by unscrewing a pair of locking mechanisms which seal the door to a vertically movable frame. Ash removal may be accomplished by partially raising the entire structure, rather than opening the door. The ash ram is rectangular, covers a substantial area of the chamber floor when extended, and utilizes a unique cable and cylinder ram moving system. An air plenum above the chamber also acts as a platform, allowing inspection and maintenance to take place on top of the chamber.