Schaeffler Technologies Ag & Co .kg

Other

Schaeffler Kg

Frieder Altmann

Frank Straub

Volker Ploetz

Swen Dörrie

Swen Doerrie

Tomas Smetana

Alexander Reimchen

Werner Wirth

Peter Ruffershöfer

Helmut Kalb

Alois Leisgang

Stefan Hofmann

Martin Halama

Erich Hahn

A return stop includes a rotational inner ring, a stationary, fixed outer ring, and a cage mounted radially between the inner ring and outer ring. The cage has at least two pairs of rollers each having a first and a second roller. A clamping rail is formed on an outer peripheral surface of the inner ring for each roller. A radial recess is formed on the inner ring in the peripheral direction directly adjacent to the respective clamping rail. Also, both of the clamping rails of the roller pairs are formed in the peripheral direction in opposite directions away from each other. In a free-running operation of the return stop, only one roller of each pair of rollers comes into position on the inner ring and the outer ring. The other roller of each pair of rollers does not come into position at least one the inner ring.

Return stop

A flanged freewheel () with an outer ring () which is configured as an angled flange part and which has an axially oriented ring flange () that forms a running surface () for clamping elements and a radially oriented flange area () for attaching the flanged freewheel (). In order to retain or improve the strength of the outer ring ()&#x2014;despite a reduced wall thickness (x)&#x2014;a ring collar () that faces radially inwards is provided at the free end face () of the ring flange ().

Flanged freewheel

A freewheel clutch which has rollers arranged between an inner and outer ring. One of the rings has ramps that interact with the rollers. Each roller is spring-loaded against a ramp by a leaf spring. Each spring is held on a web of a cage by a U-shaped section that encompasses the web. The spring has a securing section connected to the U-shaped section that extends tangentially, limits mobility of a roller in a first radial direction, and is connected to a U-bottom of the U-shaped section. An end section of a U-leg facing away from the U-bottom is bent from the U-leg, forming a second securing section, which limits mobility of the roller in the second radial direction. An extension of the end section facing the U-bottom engages the web such that the spring is held on the web radially by the U-bottom and extension of the end section.

Freewheel clutch

In an overrunning clutch (), an annular space is formed between an inner raceway () and an outer raceway, in which annular space is arranged a cage () which has cut-outs () for holding clamping bodies (), with each cut-out () being delimited by transverse webs () which run in the axial direction, and with in each case one spring element (), which projects into a cut-out () and exerts a force on a clamping body (), adjoining the transverse webs (). At that side of the transverse web () which faces away from the spring element (), at least one retaining lug (), which serves to retain a clamping body (), extends into a cut-out ().

Overrunning clutch

A bushing-type roller overrunning clutch comprising at least an inner or an outer ring that comprises clamping ramps adapted to the needles or rollers, said overrunning clutch further comprising a cage for the needles or rollers, as also pressure springs, said cage comprising cage elements that are made in one piece with the inner or outer ring, and a method of making a bushing-type roller overrunning clutch in which the inner or outer ring together with the clamping ramps and at least one border arranged on one side of the clamping ramps is made by deep-drawing, spring-retaining lugs are cut out of the border, and the spring-retaining lugs are bent radially towards the inner or outer ring and the free-standing tabs of the spring-retaining lugs are bent over into the region of the clamping ramps.

Bushing-type roller overrunning clutch with a cage for needles or rollers

A bushing-type roller overrunning dutch comprising an inner and/or outer ring (), clamping ramps () adapted to the needles or rollers (), a cage (), pressure springs () for the needles or rollers (), a bushing () with integrally formed clamping ramps (), and a solid inner or outer ring () in or on which the bushing () is fixed.

Bushing-type roller overrunning clutch with a solid outer ring

A sprag for a sprag-type freewheel clutch having a profile comprised of multiple profile sections, the sprag having at least the profile sections of an inner engagement curve, an outer engagement curve and a first and a second lateral curve, wherein the outer and inner engagement curves each form a component of a logarithmic spiral.

Sprag

Roller freewheel

A freewheel coupling () is provided having clamping bodies (), which are arranged between an inner ring () and an outer ring () and which have a narrow section (). A single cage () is arranged between the inner ring () and the outer ring () with a plurality of pockets (). Each of the pockets () has an area () that is narrower in the axial direction and an area (), which is adjacent to this narrower area, which is wider in the axial direction, and which is provided for holding a clamping body (). A spring band (), which is arranged radially within the cage (), has an original curvature in the unloaded state, wherein the curvature radius exceeds a radius of the cage (), and spring tongues (), which are provided for spring mounting of the clamping bodies (), are directed radially inwardly.

Freewheel coupling

A freewheel coupling () is provided having a gap () formed between a bearing inner ring () and a bearing outer ring (). At least one of the bearing rings () is constructed as a sleeve formed using a non-cutting method. Clamping bodies () are arranged in the gap () and have a throat (). A spring band () with spring tongues (), which are aligned tangentially, and which can be deflected in the radial direction, contact the clamping bodies () in the area of the throats (). A cage () with recesses () that holds the clamping bodies () is arranged radially outside of the spring band () in the gap ().

In an overrunning clutch comprising clamping elements () arranged behind one another in peripheral direction between a circular cylindrical inner ring () and a concentric outer ring (), said clamping elements () being guided in pockets () of a cage () while being loaded by spring tongues () of a band spring () that bears radially against the cage (), each of the pockets () for receiving a clamping element () comprising a limiting wall () that enables a support of the clamping element () on the cage (), the cage () comprises a reinforcing ledge () formed integrally on an outer surface of the cage () in every radial region comprising the limiting wall ().

A cover is provided to protect the sight of an archery bow from distortion caused by falling precipitation, regardless of the horizontal position of the bow. The bow is provided with a sight having a lens; the sight is attached to the bow by a bracket. A cover is pivotally attached to the bracket, and includes an upper protective hood over the sight, and a lower counterweight. The counterweight is of sufficient weight so that the cover will pivot about the bracket as the bow is pivoted about a horizontal axis, or laid down, so the hood will maintain its protective position above the sight.

Growing community of inventors

Pommersfelden, Germany

Frieder Altmann