My invention relates to improvements in clutches, and more particularly concerns the construction of one-way or overrunning clutches, adapte1 -'or many and various applications and uses in bth light and heavy machinery While the general purpose of the invention is to provide a sturdy and

An apparatus for gripping a pipe comprises an outer member having at least one inclined inner surface and an inner member having an inclined outer surface, a tubular member having an opening to accommodate said inner member and a threaded part, and a threaded gear engaged with the threaded part of the tubular member. On rotation of the threaded gear the tubular member moves the inner member which co-operates with the outer member so that said inner member moves towards a pipe to be gripped. The apparatus is particularly useful for applying "non-marking" jaws to the outside of tubulars in the oil and gas industry.

Apparatus for gripping a pipe

A coupling for use with two relatively movable members to transmit force between said members comprising a resilient element having a plurality of convolutions positioned between the members and a solid core element positioned within the convolutions of said resilient element, said resilient element being positioned such that the relative movement of said members urges said convolutions into frictional engagement with both of said members. The solid core element is of a size such that when frictional engagement of said members with said convolutions occurs, the convolutions are prevented from being distorted beyond their elastic limit to thereby cause permanent set of the resilient element.

Force transmitting coupling

A one way clutch in which the width dimension can be reduced and the positioning or assembling work can be simplified with respect to a shaft as compared with a prior art one way clutches including a roller clutch. The inventive one way clutch comprises an inner ring on which a ball raceway is formed by a curved part which is formed on the outer circumferential part of each planar member by laying two planar members in layer, and an outer ring provided with a plurality of windows in one planar member and disposed rotatably relative to the inner ring. A ball is housed in each window having a face on the outer circumferential side of the outer ring serving as a cam face, wherein the interval to the ball raceway decreases in a predetermined circumferential direction and means for urging each ball in that direction is provided. According to the arrangement, maximum width dimension as a one way clutch is equal to the sum of the ball diameter and the thickness of two planar members constituting the inner ring and a one way clutch having a small width dimension is obtained.

One way clutch

1,016,112. Ratchet clutches. TORRINGTON CO. May 4, 1964 [May 6, 1963], No. 18361/64. Heading F2C. A one-way jamming roller type clutch 15 combined with roller, or ball (Figs. 2 and 4, not shown) bearing journals 11 on one or each side of the clutch 15 for a gear or pulley comprises a drawn metal outer shell 7 internally formed in stepped diameters, the centre section 13 of which has multiple camming surfaces 14 housing the clutch rollers 15 which are carried in a moulded plastics cage 16 having ends 17 formed with a series of radial teeth 18 projecting within and circumferentially movable between the cam surfaces 14, the shell having radially inturned ends 8, 9 to axially retain the assembly. The roller, or ball, bearing journals 11 are retained in a cage or may be crowded assemblies, and together with the clutch rollers 15 are graded in size to suit the stepped housing diameters in the shell 7 for engagement with a common shaft diameter. The unit may be press-fitted into a housing, or, when no external strengthening housing is used the shell may be formed with punched-out lugs connected to an external mechanism (not shown) such that on clutch engagement, rotation of the shell actuates the external mechanism.

Unitary assembly of overrunning clutch and bearing

One-way device

One-way clutch

This invention relates to one-way clutches and more particularly to a combined one-way clutch and bearing construction for use with coaxial cylindrical races One of the objects of the invention is to provide a combined one-way clutch and bearing construction in which lubrication of the parts

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One-way clutch

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Apparatus for gripping a pipe

Force transmitting coupling

One way clutch

Unitary assembly of overrunning clutch and bearing

One-way device

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One way clutch

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Two-way clutch