Abstract: A flex spline 1 used for a meshing type gear device includes an attachment portion 1a, a thin-thickness tubular portion 1b continuing to the attachment portion and capable of being elastically deformed, and external teeth 1c formed at the tip end portion of the tubular portion away from the attachment portion. The thin-thickness tubular portion 1b is formed in a conical shape with an opening angle ? which is tapered in a direction from the attachment portion 1a toward the external teeth 1c before inserting a wave generator 3.

Abstract: A flex spline 1 used for a meshing type gear device includes an attachment portion 1a, a thin-thickness tubular portion 1b continuing to the attachment portion and capable of being elastically deformed, and external teeth 1c formed at the tip end portion of the tubular portion away from the attachment portion. The thin-thickness tubular portion 1b is formed in a conical shape with an opening angle &thgr; which is tapered in a direction from the attachment portion 1a toward the external teeth 1c before inserting a wave generator 3.

Abstract: An internally meshing planetary gear device which comprises an internal gear having a circular arc tooth form and an outer gear of a planetary gear having an epitrochoid tooth form, the internal gear comprises pins, both ends of which are supported, and rolling bearings inserted onto the pins, and the rolling bearings have outer races meshing with the outer gear.

Abstract: A transmission system for transmitting modem signals or multifrequency (MF) signals together with speech signals over the same digital transmission line. The system includes a transmitter which has a first coder that efficiently encodes a speech signal to produce a first coded output, a detector for detecting a multifrequency signal or modem signal, a second encoder which produces a second coded output from the multifrequency signal or modem signal, and a selector for selecting either the first or second coded output in response to the output of the detector. The transmission system also includes a receiver which has a separator for separating a signal transmitted from the transmitting means into the first and second coded outputs, a first decoder for decoding the first coded output and a second decoder for decoding the second coded output.

Abstract: A stabilized olefin polymer composition having resistance against deterioration caused by contact with such heavy metals as copper which comprises 100 parts by weight of an olefin polymer and from 0.001 to 5 parts by weight of an N-cinnamoyl-N'-acyl-hydrazine derivative is disclosed.

Abstract: A stabilized olefin polymer composition having resistance against deterioration caused by contact with such heavy metals as copper which comprises 100 parts by weight of an olefin polymer and from 0.001 to 5 parts by weight of an N,N'-dibenzoylhydrazine derivative is disclosed.

Abstract: An insulator employing elastomeric blocks in compression and in shear is disclosed. It comprises an inner member having a wedge, an outer member around the wedge and spaced therefrom and two resilient means, each including alternative layers of rigid plates and elastomeric blocks, disposed on the opposite sides of the wedge and operatively connected between the wedge and the outer member.

Abstract: A polyolefin composition containing a novel 2-pyridylthiozinc-oxide complex, hexakis(2-pyridylthio)tetrazinc monooxide, has resistance against thermal and oxidative deterioration, particularly against deterioration caused by contact with heavy metals. Various processes for the preparation of said complex are also disclosed.

Abstract: Novel N-(salicyloylamino)imides which can act as excellent stabilizers for polyolefins are disclosed. A process for the preparation of the same which comprises the reaction of salicyloylhydrazine with a cyclic acid anhydride is also disclosed.

Abstract: A stabilized polyolefin composition having resistance against deterioration caused by contact with heavy metals such as copper which comprises 100 weight parts of polyolefin and 0.001-5 weight parts of N-(salicyloylamino)imide is disclosed.