Abstract A flexible shaft coupling comprising a cylindrical elastomeric body having a reinforcement embedded therein, a mounting piece adapted to be fixed to a driving shaft and having a shaft fitted within one end of the elastomeric body, a cylindrical member tightly fitted on that portion of the end of the elastomeric body which accommodates the shaft of the mounting piece to deform that portion radially inwardly thereby clamping together the shaft and the elastomeric body, and coupling members consisting of a protrusion formed on the shaft of the mounting piece or on the cylindrical member and a notch formed in the cylindrical member or in an annular member fixed to the shaft of the mounting piece to form clearances between the protrusion and side walls of the notch, thereby providing a coupling characteristics in which a torque does not increase so much at the commencement of rotation of the mounting piece on the driving shaft but increases relatively rapidly to the maximum torque as the mounting piece rotates further after an elapse of the initial short period of time.
A flexible shaft coupling comprising: a) a cylindrical elastomeric body having an outer layer with a reinforcement embedded therein and an inner layer of softer elastomeric material than said outer layer; b) a mounting piece adapted to be fixed to a driving shaft, said mounting piece having a cylindrical shaft extending from one side and fitted within a first end of said elastomeric body; c) a cylindrical member tightly fitted about said first end of the elastomeric body so as to deform said first end radially inwardly, thereby clamping together said cylindrical shaft and said elastomeric body; and d) coupling means between said mounting piece and said cylindrical member such that only said inner layer transmits torque to a driven shaft upon initial rotation of said mounting piece, and after a predetermined angle of rotation of said mounting piece both said inner and said outer layers transmit torque to a driven shaft.
Claim 2
Dependent Claim
152 words
A flexible shaft coupling comprising: a) a cylindrical elastomeric body having an outer layer with a reinforcement embedded therein and an inner layer of softer elastomeric material than said outer layer; b) a mounting piece adapted to be fixed to a driving shaft, said mounting piece having a cylindrical shaft extending from one side and fitted within a first end of said elastomeric body; c) a cylindrical member tightly fitted about said first end of the elastomeric body so as to deform said first end radially inwardly, thereby clamping together said cylindrical shaft and said elastomeric body; and d) coupling means between said mounting piece and said cylindrical member such that only said inner layer transmits torque to a driven shaft upon initial rotation of said mounting piece, and after a predetermined angle of rotation of said mounting piece both said inner and said outer layers transmit torque to a driven shaft.
Claim 3
Dependent Claim
23 words
A flexible shaft coupling as set forth in claim 1, wherein said coupling means consists of a protrusion (7) and a notch (6).
Claim 4
Dependent Claim
59 words
A flexible shaft coupling as set forth in claim 1, wherein said coupling means consists of a protrusion (7) formed on said cylindrical shaft (4b) of said mounting piece (4) and a notch (6) formed in a part (5a) of said cylindrical member (5) to form clearances (S) between said protrusion (7) and side walls of said notch (6).
Claim 5
Dependent Claim
61 words
A flexible shaft coupling as set forth in claim 1, wherein said coupling means consists of a protrusion (7) formed on said cylindrical member (5) and a notch (6) formed in an annular member (9) fixed to said cylindrical shaft (4b) of said mounting piece (4) to form clearances (S) between said protrusion (7) and side walls of said notch (6).
Claim 6
Dependent Claim
23 words
A flexible shaft coupling as set forth in claim 1, wherein said coupling means is arranged on the side of a driving shaft.
Claim 7
Dependent Claim
23 words
A flexible shaft coupling as set forth in claim 1, wherein said coupling means is arranged on the side of a driven shaft.
Claim 8
Dependent Claim
24 words
A flexible shaft coupling as set forth in claim 1, wherein said coupling means are arranged on both sides of driving and driven shafts.