Rotary shafts – gudgeons – housings – and flexible couplings for ro – Overload release coupling – Torque transmitted via frangible element
Patent
1988-02-09
1990-01-16
Stodola, Daniel P.
Rotary shafts, gudgeons, housings, and flexible couplings for ro
Overload release coupling
Torque transmitted via frangible element
403 2, F16D 900
Patent
active
048940437
ABSTRACT:
A torque transmitting coupler drivingly connects a rotary drive mechanism, such as a earth boring auger, and a rotary driven tool, such as a screw anchor. The coupler includes driving and driven members. The driving member has thereon a drive mechanism connector and a driving plate. The driven member has thereon a tool connector and a driven plate. The coupler also includes a swivel connecting device which interconnects the driving and driven members together in a coupled relation such that the members are rotatable relative to one another and the respective driving and driven plates are disposed in end-to-end contacting relation to one another. A pair of shearable pins interconnect the drive and driven plates together so as to cause transmitting of torque from one of the members to the other via the respective plates. The shearable pins are designed to shear at a predetermined torque load imposed thereon by one of the members via its respective plate. A disk is attached to each shearable pin and a retainer plate is disposed adjacent to the driving plate to receive the shearable pins and capture and maintain the pins via their disks adjacent the one plate both before and after the pin has been sheared. Spring-loaded posts on the driving plate movably mount the retainer plate so as to receive the shearable pin and overlie the disks thereon.
REFERENCES:
patent: 1574466 (1926-02-01), Brown
patent: 1610414 (1926-12-01), Bernard et al.
patent: 1637944 (1927-08-01), Keller
patent: 3505833 (1970-04-01), Reak
patent: 3525225 (1970-08-01), Yager et al.
patent: 3753625 (1973-08-01), Fabrizio et al.
patent: 4185477 (1980-01-01), van der Lely et al.
Jeffers Albert L.
Niewyk Anthony
Stodola Daniel P.
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