Trip device for a rotating machine
AssigneeCarrier Corporation
InventorsGeorge P. Schanzenbach, Jr., David M. Mizikar
Life of this patent
Estimating the term…
Abstract
A trip device to prevent continued operation of a rotating machine upon the occurrence of an undesirable operating condition includes a sensing element to sense the occurrence of the undesirable operating condition. The trip device further includes an operating arm normally spaced from the sensing element. The sensing element moves into contact with the operating arm upon the occurrence of the undesirable operating condition. The device further includes a trigger to lock the operating arm in its normal operating position, with the sensing element moving the arm relative to the trigger upon the occurrence of the undesirable operating condition. The trigger thereafter acts as a stop to maintain the operating arm in a position spaced from the sensing element.
Claims9
A trip device to discontinue operation of a machine upon the occurrence of an undesirable operating condition comprising:
- means to sense the occurrence of said undesirable operating condition;
- a first operating arm spaced from said sensing means during normal operation of said machine, said sensing means moving into contact with said arm upon the occurrence of said undesirable operating condition;
- and
- trigger means to lock said operating arm in said normal operating position, said sensing means moving said arm relative to said trigger means upon the occurrence of said undesirable operating condition, said trigger means thereafter acting as a stop to maintain said operating arm in a position spaced from said sensing means.
A trip device to discontinue operation of a rotating machine upon the occurrence of excessive axial clearance comprising:
- a cam connected to a rotating portion of said machine;
- a lever pivotable adjacent a first end having a step-like surface, the other end being spaced from said cam during normal operation of said machine, said cam being forced into contact with said lever upon the occurrence of the excessive axial clearance;
- a pivotable trigger including force generating means to pivot said trigger in the same direction as the lever is pivoted by said cam, said trigger including a step-like surface at one end placed into engagement with said step-like surface of said lever to lock said lever in said normal operating position, said step-like surfaces being disengaged upon rotation of said lever, said trigger moving along a ramplike surface of said lever;
- and
- stop means to prevent rotation of said trigger beyond a predetermined point, a first surface of said trigger thereafter acting as a stop to maintain said lever in a position spaced from said cam.
Dependencies are inferred from the claim text.