Pump control means

Claim 2

A control means for use with a typical counterbalanced pump unit including in general a frame, a pump rod, counterweights for offsetting the weight of the pump rod, means for driving the counterweights between upper and lower positions, and means causing the pump rod to move relative to the counterweights, said control means comprising: a. cammed means for mounting to the frame; b. cam means for fixedly mounting on the counterweights and for coacting with said cammed means as the counterweights are driven between the upper and lower positions to cause said cammed means to rotate; c. linkage means for connecting said cammed means to the means for driving the counterweights to regulate the means for driving the counterweights to cause the counterweights to move between the upper and lower positions in a smooth, even rate as said cam means causes said cammed means to rotate; d. means for temporarily storing the momentum of the rotation of said cammed means to cause rotation of said cammed means to continue after the counterweights have reached the upper or lower position; e. stop means for stopping the rotation of said cammed means after a fixed amount of rotation; and f. means for dissipating excessive momentum of said means for temporarily storing the momentum of the rotation of said cammed means after the rotation of said cammed means is stopped.

Claim 3

The control means of claim 1 in which said cammed means includes: a. shaft means for rotatably mounting to the frame, said shaft means having first and second ends; b. a first cylindrical cammed member fixedly mounted on said first end of said shaft means for coacting with said cam means when the counterweights are being driven to the upper position to cause rotation of said shaft means in a first direction; and c. a second cylindrical cammed member fixedly mounted on said second end of said shaft means for coacting with said cam means when the counterweights are being driven to the lower position to cause rotation of said shaft means in a second direction.

Claim 4

The control means of claim 2 in which said linkage means is fixedly connected to said shaft means so that when said shaft means is rotated in the first direction said linkage means causes the meaNs for driving the counterweights to drive the counterweights in the upper direction and when said shaft means is rotated in the second direction said linkage means causes the means for driving the counterweights to drive the counterweights in the lower direction.

Claim 5

The control means of claim 3 in which said linkage means includes turnbuckle means for varying the length of said linkage means to vary the amount of control over the means for driving the counterweights.

Claim 6

A control means for use with a typical counterbalanced pump unit including in general a frame, a pump rod leading to a bottom hole pump, counterweights movably mounted on the frame for offsetting the weight of the pump rod, means for driving the counterweights between upper and lower positions, and means for causing the pump rod to move relative to the counterweights, said control means comprising: a. cammed means including shaft means for rotatably mounting to the frame, a first cylindrical cammed member fixedly mounted on a first end of said shaft means, and a second cylindrical cammed member fixedly mounted on a second end of said shaft means; b. cam means for fixedly mounting on the counterweights and for coacting with said first cylindrical cammed member when the counterweights are being driven to the upper position to cause rotation of said shaft means in a first direction and for coacting with said second cylindrical cammed member when the counterweights are being driven to the lower position to cause rotation of said shaft means in a second direction; c. flywheel means coactively mounted to said shaft means for temporarily storing the momentum of the rotation of said shaft means to cause rotation of said shaft means to continue after the counterweights have reached the upper or lower position; d. stop means for stopping the rotation of said shaft means after a fixed amount of rotation; e. clutch means for dissipating excessive momentum of said flywheel means after the rotation of said shaft means is stopped; and f. linkage means for connecting said shaft means to the means for driving the counterweights so that when said shaft means is rotated in the first direction said linkage means causes the means for driving the counterweights to drive the counterweights in the upper direction and when said shaft means is rotated in the second direction said linkage means causes the means for driving the counterweights to drive the counterweights in the lower direction.

Claim 7

A control means for use with a typical counterbalanced pump unit including in general a frame, a pump rod leading to a bottom hole pump, counterweights movably mounted on the frame for offsetting the weight of the pump rod, means for driving the counterweights between upper and lower positions, and means for causing the pump rod to move relative to the counterweights, said control means comprising: a. cammed means including shaft means for rotatably mounting to the frame, a first cylindrical cammed member fixedly mounted on a first end of said shaft means, and a second cylindrical cammed member fixedly mounted on a second end of said shaft means; b. cam means for fixedly mounting on the counterweights and for coacting with said first cylindrical cammed member when the counterweights are being driven to the upper position to cause rotation of said shaft means in a first direction and for coacting with said second cylindrical cammed member when the counterweights are being driven to the lower position to cause rotation of said shaft means in a second direction; c. flywheel means coactively mounted to said shaft means for temporarily storing the momentum of the rotation of said shaft means to cause rotation of said shaft means to continue after the counterweights have reached the upper or lower position; d. stop means for stopping the rotation of said shaft means after a fixed amount of rotation; e. clutch means for dissipating excessive momentum of said flywheel means after the rotation of said shaft means is stopped; and f. linkage means for connecting said shaft means to the means for driving the counterweights so that when said shaft means is rotated in the first direction said linkage means causes the means for driving the counterweights to drive the counterweights in the upper direction and when said shaft means is rotated in the second direction said linkage means causes the means for driving the counterweights to drive the counterweights in the lower direction.

Claim 8

The combination with a typical counterbalanced pump unit including in general a frame, a pump rod leading to a bottom hole pump, counterweights movably mounted on the frame for offsetting the weight of the pump rod, means for driving the counterweights between upper and lower positions, and means for causing the pump rod to move relative to the counterweights, of control means for controlling the means for driving the counterweights to allow the counterweights to move between the upper and lower positions with equal or unequal speed in a smooth, even rate, said control means comprising: a. cammed means including shaft means rotatably mounted to the frame, a first cylindrical cammed member fixedly mounted on a first end of said shaft means, and a second cylindrical cammed member fixedly mounted on a second end of said shaft means; b. cam follower means fixedly mounted on the counterweights for coacting with said first cylindrical cammed member when the counterweights are being driven to the upper position to cause rotation of said shaft means in a first direction and for coacting with said second cylindrical cammed member when the counterweights are being driven to the lower position to cause rotation of said shaft means in a second direction; c. linkage means connecting said shaft means to the means for driving the counterweights so that when said shaft means is rotated in the first direction said linkage means causes the means for driving the counterweights to drive the counterweighTs in the upper direction and when said shaft means is rotated in the second direction said linkage means causes the means for driving the counterweights to drive the counterweights in the lower direction; d. flywheel means coactively mounted to said shaft means for temporarily storing the momentum of the rotation of said shaft means to cause rotation of said shaft means to continue after the counterweights have reached the upper or lower position; e. stop means for stopping the rotation of said shaft means after a fixed amount of rotation; and f. clutch means for dissipating excessive momentum of said flywheel means after the rotation of said shaft means is stopped.

Claim 9

The combination with a typical counterbalanced pump unit including in general a frame, a pump rod leading to a bottom hole pump, counterweights movably mounted on the frame for offsetting the weight of the pump rod, means for driving the counterweights between upper and lower positions, and means for causing the pump rod to move relative to the counterweights, of control means for controlling the means for driving the counterweights to allow the counterweights to move between the upper and lower positions with equal or unequal speed in a smooth, even rate, said control means comprising: a. cammed means including shaft means rotatably mounted to the frame, a first cylindrical cammed member fixedly mounted on a first end of said shaft means, and a second cylindrical cammed member fixedly mounted on a second end of said shaft means; b. cam follower means fixedly mounted on the counterweights for coacting with said first cylindrical cammed member when the counterweights are being driven to the upper position to cause rotation of said shaft means in a first direction and for coacting with said second cylindrical cammed member when the counterweights are being driven to the lower position to cause rotation of said shaft means in a second direction; c. linkage means connecting said shaft means to the means for driving the counterweights so that when said shaft means is rotated in the first direction said linkage means causes the means for driving the counterweights to drive the counterweighTs in the upper direction and when said shaft means is rotated in the second direction said linkage means causes the means for driving the counterweights to drive the counterweights in the lower direction; d. flywheel means coactively mounted to said shaft means for temporarily storing the momentum of the rotation of said shaft means to cause rotation of said shaft means to continue after the counterweights have reached the upper or lower position; e. stop means for stopping the rotation of said shaft means after a fixed amount of rotation; and f. clutch means for dissipating excessive momentum of said flywheel means after the rotation of said shaft means is stopped.