in that form of the present invention chosen for purposes of illustration in the drawing , fig1 shows a pet exercising device , indicated generally at 10 , having a generally cylindrical , hollow pylon 12 supported on a base 14 and having an arm 16 rotatably mounted on the top of the pylon 12 with a toy , such as stuffed mouse 18 secured to the end of the arm 16 by suitable means , such as string 20 . within the pylon 12 is an electric motor 22 , which is energized by suitable means , such as electric cord 24 , through a control box 26 , and which serves to drive the arm 16 by suitable means , such as drive shaft 28 . the top 29 of the pylon 12 is provided with a camming surface 31 , shown in fig2 as an annular ring extending about the periphery of the top 29 of the pylon 12 and having a plurality of alternate ridges 33 and valleys 35 spaced about the camming surface 31 . as seen in fig1 the arm 16 rides on the camming surface 31 , which results in irregular movement of the string 20 and toy 18 . obviously , the specific shape of the ridges 33 and valleys 35 , and the spacing between them , may be varied substantially as desired to produce irratic movement of the arm 16 and toy 18 to further enhance the appeal of the device 10 to pets . the control box 26 contains speed control means 30 for regulating the rate of rotation of the motor 22 and direction control means 32 for regulating the direction of rotation of the motor 22 . the direction control means 32 includes means for periodically reversing the direction of rotation and for controlling the lengths of the intervals between such direction changes . control knobs 34 , 36 and 38 are provided on the face of the control box 26 to enable the operator to regulate the speed control means 30 and direction control means 32 . if desired , a timer 40 may be included in the control box 26 , controlled by knob 42 , to allow the operator to cause the exercising device 10 to be automatically activated at a desired time , without requiring the operator to be present at the desired time . finally , a pressure - sensitive switch 44 may be attached to sense movement of the drive shaft 28 and to respond to such movement in any of a variety of ways . for example , if the pet exercising device 10 is turned &# 34 ; off &# 34 ; and the cat bats the arm 16 or toy 18 with its paw , the motion will be transmitted through arm 16 and drive shaft 28 to the switch 44 causing the motor 22 to turn &# 34 ; on &# 34 ;. if desired , the signal from switch 44 may be passed to the timer 40 to provide a predetermined period of operation in response to such movement , after which the timer 40 will turn the motor 22 &# 34 ; off &# 34 ; again . if the motor 22 is turned &# 34 ; on &# 34 ; when the switch 44 is activated , as if the cat is clinging to the toy 18 and resisting the efforts of the motor 22 and arm 16 to move the toy , the signal from the switch 44 may serve to reverse the direction of rotation of the motor 22 or turn the motor 22 &# 34 ; off &# 34 ;, to prevent overloading and possible burnout of the motor 22 . in use , the operator plugs the electrical cord 24 into a standard electrical outlet , not shown , and adjusts control knobs 34 and 36 , as desired , to regulate the speed control means 30 and direction control means 32 and , thereby , to regulate the speed and initial direction of rotation of the motor 22 and arm 16 . knob 38 allows the operator to determine the length of the interval between changes of the rotational direction . if desired , the operator can also use control knob 42 to set the timer 40 to cause the exercising device 10 to be activated at a desired future time . when activated , motor 22 will turn the drive shaft 28 which will cause arm 16 to rotate and will move the toy 18 at the desired speed and in the desired direction . after the predetermined interval , set by knob 38 , the direction of rotation will be reversed and motor 22 will cause the toy 18 to be moved in the reverse direction . thus , the movement of the toy will initiate automatically and the speed and direction of movement of the toy will vary , as determined by the knobs 34 , 36 , 38 and 42 of the control box 26 . this variable motion of the toy 18 has been found to be extremely attractive to cats and greatly increases their desire to play with the toy 18 and , consequently , causes the cat to exercise . if desired , the device 10 may also be used for activating fishing lures , with the lure substituted for the toy 18 , to provide a lifelike movement of the lures and , hence , to attract fish . also , the motor 22 could be energized by suitable batteries , instead of by the electrical cord 14 . in addition , numerous other variations and modifications can , obviously , be made without departing from the spirit of the present invention . therefore , it should be clearly understood that the forms of the present invention described above and shown in the figures of the accompanying drawing are illustrative only and are not intended to limit the scope of the present invention .
an improved pet exercising device comprising a toy suspended from a motorized arm having an electronic control capable of actuating the device at predetermined or random intervals and for varying the speed and direction of movement of the toy to provide movements which are more attractive to pets and which are not apparently repetitive and , hence , are more challenging and interesting to the pet , especially to cats .