Abstract: In an excercising apparatus for supporting a bicycle, a pivotally mounted member connects to a rear axle of the bike to constrain movement of the axle about the pivot of the support member. A support roller, horizontally located on the opposite side of the rear axle relative to the pivot point, supports and applies a load to the rear wheel. An inclined front wheel support means has a stiffness such that when the operator shifts has weight toward the front wheel support means, a rearward force is exerted on the rear tire.

Abstract: A method for fabricating a rear fork assembly for a bycycle includes the steps of: (1) making seat stay tubes and chain stay tubes and drop outs as separate components with universally pivotable, abuttable joints between the stay tubes and mating portions of the drop outs; (b) clamping these components at a predetermined angular relationship; and (c) welding the joints to fix them in that predetermined angular relationship. In one embodiment, the joints are ball and socket type and the seat stay tubes are connected to the seat tube through an inverted U-shaped yoke and a straight yoke tube with modified ball and socket type joints at the top and bottom of the yoke. In another embodiment, the seat stay tubes are connected directly between the drop outs and the yoke tube.

Abstract: Bicycle seat post clamp mechanism comprising a locking shoe supported in a seat stay tube for movement to and from a locking position engaging the seat post. The locking shoe has a pair of beveled rear cam faces and a rear extension with a through hole. A pair of clamp members, each with a through hole and a beveled cam face, are supported in diametrically spaced circular openings in the wall of the seat stay tube, and extend along a horizontal axis transverse to the seat post. An adjusting screw extends through the clamp members. Tightening the screw draws the clamp members together causing the cam faces to move the locking shoe forwardly into its locking position against the seat post. The locking shoe and clamp members have circular cross-sections of a size small enough to be inserted through the openings in the seat stay tube and then to be assembled therein.

Abstract: An adjustable cycle-type seat post assembly comprises a tubular seat post which fits slidably within an upstanding tubular seat mast. The seat post has a cylindrical bore with a closed upper end and an open lower end. A mounting shaft has an elongated body comprising upper and lower head portions with an intermediate portion between them. The upper head portion has a piston with O-ring seals engaging the cylindrical bore and defining with the closed upper end a variable volume air chamber. The intermediate portion has an axially extending slot engaging a pin secured to the seat post to limit relative axial movement and prevent relative torsional movement. The mounting shaft is secured in the seat mast by axially spaced openings in the lower head, one of which is engaged with a water bottle connecting stud extending through the seat mast wall. Ribs flanking the openings align them with the water bottle stud to facilitate assembly.

Abstract: A longitudinally adjustable saddle mounting for cycle-type apparatus such as a cycle-type exerciser, a bicycle, a tricycle, or like apparatus having a saddle mounted on a seat post. The saddle is fastened to a slide member which is adjustably moveable lengthwise of a channel guide member mounted on the seat post. A latch pin is carried by the slide member and is spring-biased toward a locked position engaging a selected one of several detent recesses in the channel guide member. A gudgeon member is rotatably journaled in the slide member and has an external handle. Interengaging grooves on the gudgeon member and latch pin move the pin from its locked position when the handle is turned, enabling longitudinal adjustment of the saddle with the slide member.

Abstract: A cycle-type exceriser has a pedal shaft which drives an energy-absorbing wheel. A pair of oscillatable handlebar levers are connected by links to drive crank arms which are connected through one-way clutches to opposite ends of the pedal shaft. Oscillation of the drive crank arms by the handlebar levers rotates the pedal shaft to thereby drive the energy-absorbing wheel. A semi-recumbent embodiment has a seat and the pedal shaft at opposite ends, with the handlebar levers mounted therebetween and the energy-absorbing wheel below the seat. An upright embodiment has a saddle at one end, the handlebar levers and energy-absorbing wheel at the other end, with the pedal shaft therebetween. In the semi-recumbent and upright embodiments, the links are interconnected by an interlock lever constraining the handlebar levers to oscillation in opposite directions. The energy-absorbing wheel can be driven by the pedals only; by the handlebar levers only; or by both pedals and handlebar levers.

Abstract: A bicycle frame with asymmetric chain stays. The rear caliper brake is mounted across the underside of the chain stay tubes. The chain stay tubes are asymmetric. The front portion of the chain stay tube on the left side, opposite the chain, is curved farther outwardly from the centerline of the frame than the corresponding front portion of the other chain stay tube to provide a first step completely covering the end of the brake actuating arm to provide a support for a performer's foot while protecting the brake actuating arm from foot pressure. Second, third, fourth, and fifth foot-supporting steps or standing platforms are provided respectively by an upwardly-arched tube secured across the seat stay tubes, outwardly-curved rear portions of the chain stay tubes extending past the rear axle, and a diagonal tube secured between the down and seat tubes.

Abstract: A cycle exerciser having a wheel rotatably mounted on a frame and arranged to absorb energy applied to the wheel through a pair of foot pedals and/or a pair of handlebar levers. A pedal-driven main drive shaft is connected to a countershaft through a first speed-increasing chain and sprocket mechanism, and the countershaft is connected through a second speed-increasing chain and sprocket mechanism to the energy-absorbing wheel. The main drive shaft is connected through a one-to-one chain and sprocket mechanism to another countershaft enabling the main drive shaft and the other countershaft to rotate at the same speed. The handlebar levers are connected to a pair of drive crank arms which are secured to opposite end portions of the other countershaft.

Abstract: A cycle exerciser has a pedal-actuatable drive shaft and a pair of counter shafts rotatably mounted about spaced, parallel axes. First and second sprockets are mounted on the drive shaft and on one of the counter shafts, respectively. Third and fourth sprockets are mounted on the other counter shaft. A fifth sprocket is connected to an energy-absorbing wheel. The first and second sprockets are the same size and larger than the third sprocket. The fourth sprocket is larger than the fifth. A pair of oscillatable handle bar levers are connected to drive crank arms at opposite ends of the one counter shaft. A primary endless chain is in wraparound connecting engagement with the first, second, and third sprockets. A secondary endless chain is in wraparound connecting engagement with the fourth and fith sprockets. Energy is applied to the wheel through foot pedals and/or the handle bar levers.

Abstract: A bicycle frame with asymmetric chain stays. The rear caliper brake is mounted across the underside of the chain stay tubes. The chain stay tubes are asymmetric. The front portion of the chain stay tube on the left side, opposite the chain, is curved farther outwardly from the centerline of the frame than the corresponding front portion of the other chain stay tube to provide a first step completely covering the end of the brake actuating arm to provide a support for a performer's foot while protecting the brake actuating arm from foot pressure. Second, third, fourth, and fifth foot-supporting steps or standing platforms are provided respectively by an upwardly-arched tube secured across the seat stay tubes, outwardly-curved rear portions of the chain stay tubes extending past the rear axle, and a diagonal tube secured between the down and seat tubes.

Abstract: A bicycle saddle to facilitate freestyle maneuvers. A protecting element comprising a roller assembly is supported in the rear portion and protrudes above the top surface of the saddle body to engage the pavement when the bike is in inverted position during freestyle maneuvers. This protects the saddle from scuffing damage and facilitates transition to and from the inverted position. Corrugations at opposite sides of the front nose portion facilitate gripping. Spring-biased pins at opposite ends of the roller assembly engage bores in the body and make it readily attachable and detachable. An upstanding, outwardly concave fillet extends along a clearance space between the body and roller assembly to prevent snagging a rider's clothing.

Abstract: A bicycle chainguard having a housing shaped to cover the top run of a bicycle chain with a curved forward end portion extending at least partially around a front sprocket. The housing has a pair of keyhole-shaped through-slots formed in a vertical wall. Clamps encircle seat and down tubes on the frame of the bicycle. Each clamp has a lug extending into a corresponding through-slot. Each lug has a shank with a diameter sized to fit within the through-slot, and an enlarged head sized to pass through an enlarged end portion of the keyhole-shaped through-slot. The longitudinal axis of each through-slot is oriented tranversely to the axis of the corresponding frame tube enabling assembly of the lug in the slot in a wide range of positions along the axial length of the through-slot to accommodate a range of angular orientations of the frame tubes for different model or style bicycles.

Abstract: A handlebar for a bicycle with a cross-bar having a flat upper surface to support a rider during freestyle maneuvers.

Abstract: A bicycle fork end fitment connector comprising a two- or three-layer lamination press-welded into a unitary part. A base plate is cold-formed from flat, uniform thickness mild steel plate stock and has a slot. One or two face plates are formed from flat, uniform thickness stainless steel sheet stock each having a slot matching the size and shape of the slot in the base plate. A plurality of small diameter convex protuberances are formed on one side of each face plate before assembly. The base and face plates are assembled in an electric press welder with the slots in registration, while current is applied to fuse them into a solid unit. In one embodiment, a single face plate is assembled on one side only of the base plate. In another embodiment, a pair of face plates are assembled on opposite sides of the base plate. The face plate or plates comprise a raised hub portion or portions, the opposite, outer surfaces of the connector being precisely flat and parallel.

Abstract: A chain hangar for a bicycle seat stay tube comprising an elongated body having a driving head and a drill bit at opposite end portions, an intermediate portion with self-tapping external screw threads sized to engage a bore made by the drill bit, and a stop shoulder immediately behind the screw threads to engage the wall of the seat stay tube.

Abstract: Method and apparatus for effecting precise adjustment of pointer on load indicator of ergometric exerciser having pedal-actuated wheel, adjustable caliper brakes engaging wheel and mounted on a pivoted frame for movement by the wheel to actuate load indicator pointer, and including introducing an adjustable biasing force against movement of pivoted frame in form of a spring and adjustable calibration screw and locknut engaging the spring, the biasing force being adjusted by hanging a weight from periphery of wheel, adjusting brakes to just prevent weight from turning wheel, manually turning wheel slightly in forward direction, allowing slight slippage of wheel past brakes, rapping side of wheel briskly adjacent brakes and noting reading of load indicator, manually rotating wheel slightly in rearward direction without brake slippage and repeating last recited step, and adjusting calibration screw in accordance with average of said readings to bring pointer to proper position.

Abstract: A rear carrier or rack for a bicycle has an elongated platform with a pair of side legs attachable to rear frame eyelets. A slide block is supported on the front end portion of the platform and has a pair of spaced, parallel, open sided channels comprising guideways for a pair of slide rods extending beyond the front of the carrier. Lock screws, carried by the rods, extend through open slots in the sides of the slide block and hold the rods at a selected degree of extension beyond the carrier. In one embodiment, a transverse bracket is pivotally connected across downturned front end portions of the slide rods for tilting adjustment about a common horizontal axis. The bracket has a first, central aperture, and a second, offset, elongated aperture. The carrier can be mounted in a plurality of positions to level the platform on bicycles with frame sizes ranging from 19 inches to 27 inches by connecting one or the other of the bracket apertures to the front or rear end of the rear caliper brake mounting bolt.

Abstract: Frame for high performance light weight bicycle having round top and bottom tubes secured at forward ends to head tube, with forward ends of top and bottom tubes being oval with a lateral width the same as diameter of round portions as a minor axis, tapering rearwardly from a forward maximum major axis, and a section modulus gradually increasing from that of round portions toward the forward ends.