Power take-off devices
First Claim
1. In an apparatus fitted with a power take-off drive connectable to ancillary equipment and means for actuating and deactuating the power take-off drive, an interlock system comprising:
- sensor means for sensing whether the power take-off drive is operative and producing an output signal representative thereof;
timer means coupled to the actuating and deactuating means and initiated when said means for actuating and deactuating the power take-off drive is operated; and
means responsive to the sensor output signal and coupled to the timer means and operable to produce a deactuating signal in response to a sensor output signal indicating the power take-off drive is inoperative when the timer times out, the deactuating signal being applied to a selected component of the apparatus to deactuate that component.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus fitted with a power take-off (PTO) drive connectable to ancillary equipment and means for actuating and deactuating the PTO drive is disclosed wherein an interlock system includes sensor means for sensing whether the PTO drive is operative and producing an output signal representative thereof, timer means coupled to the actuating and deactuating means and initiated when said means is operated, and means responsive to the sensor output signal and coupled to timer means and operable to produce a deactuating signal if the sensor output signal is of a predetermined nature when the timer times out. The deactuating signal is applied to a selected component of the apparatus to deactuate that component.
-
Citations
13 Claims
-
1. In an apparatus fitted with a power take-off drive connectable to ancillary equipment and means for actuating and deactuating the power take-off drive, an interlock system comprising:
-
sensor means for sensing whether the power take-off drive is operative and producing an output signal representative thereof; timer means coupled to the actuating and deactuating means and initiated when said means for actuating and deactuating the power take-off drive is operated; and means responsive to the sensor output signal and coupled to the timer means and operable to produce a deactuating signal in response to a sensor output signal indicating the power take-off drive is inoperative when the timer times out, the deactuating signal being applied to a selected component of the apparatus to deactuate that component.
-
-
2. In an apparatus fitted with a power take-off drive connectable to ancillary equipment and means for actuating and deactuating the power take-off drive, an interlock system comprising:
-
sensor means for sensing whether the power take-off drive is operative and producing an output signal representative thereof; timer means coupled to the actuating and deactuating means and initiated when the actuating and deactuating means is operated to actuate the power take-off drive; and means responsive to the sensor output signal and coupled to the timer and operable to deactuate the actuating and deactuating means if the power take-off drive is not operative when the timer times out.
-
-
3. In an apparatus fitted with a power take-off drive drivable by primary drive means for the apparatus and connectable to ancillary equipment, and means for actuating and deactuating the power take-off drive, an interlock system comprising:
-
sensor means for sensing whether the power take-off drive is operative and producing an output signal representative thereof; timer means coupled to the actuating and deactuating means and initiated when the actuating and deactuating means is operated to deactuate the power take-off drive; and control means responsive to the sensor output signal and coupled to the timer means and operable to deactuate the primary drive if the power take-off is still operative when the timer times out. - View Dependent Claims (4, 5, 6, 7, 8, 9)
-
-
10. In an apparatus fitted with a power take-off drive connectable to ancillary equipment and means for initiating the actuation and deactuation of the power take-off drive, the initiating means requiring distinct first and second movements of actuation to render the power take-off drive operative, an interlock system comprising:
-
timer means initiated when a first signal indicative of intended actuation of the power take-off drive is detected; and means coupled to the timer means and responsive to a second signal confirming intended actuation of the power take-off drive and operable to deactuate the power take-off drive if the timer means times out before said second signal is detected. - View Dependent Claims (11)
-
-
12. In an apparatus fitted with a power take-off drive drivable by primary drive means for the apparatus and connectable to ancillary equipment, means for actuating and deactuating the power take-off drive and switch means for controlling the actuating and deactuating means, an interlock system comprising:
-
first sensor means for sensing whether the primary drive means is operative and producing a first output signal representative thereof; second sensor means for sensing whether the power take-off drive is operative and producing a second output signal representative thereof; and means responsive to the first and second signals and operable to deactuate the power take-off drive via the actuating and deactuating means when the second signal is present and the first signal is absent, which corresponds to the primary drive means being inoperative and the switch means is in an ON position. - View Dependent Claims (13)
-
Specification