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Pump driveRelated Patent Categories: Pumps, Motor Driven, Electric Or Magnetic MotorPump drive description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070031269, Pump drive. Brief Patent Description - Full Patent Description - Patent Application Claims
[0001] The invention relates to a pump drive for connection to a container pump or to a container equipped with an integrated pump. [0002] Such container pumps are used for transporting liquids out of containers, such as out of barrels or tanks. In this connection, a pump roughly consists of a pumping mechanism and a pump head. The pumping mechanism is introduced into the liquid to be transported. A rotor shaft rotates in a pump dome through which the liquid rises; a rotor is assigned to the shaft on the power take-off side, and thus causes a partial vacuum in the pump dome, so that the liquid is drawn upward in the pump dome. [0003] Towards the top, the pumping mechanism is followed by an extraction tap through which the liquid that has been transported upward can be tapped. The extraction tap is sealed relative to the pump head that lies above it, so that the transported liquid cannot penetrate into the motor. The latter follows above the pumping mechanism. It comprises a drive, the shaft of which is connected to act with the rotor shaft of the pumping mechanism, and which drives the pump. [0004] usually, a hose can be connected with the extraction tap, in order to guide the liquid away from the extraction tap. In this connection, it is usual to provide a tapping gun or a discharge cock for metering, by way of which the outflow can be controlled. [0005] It is also known to configure the pump head to be removable, in order to create a component system. In this connection, different pumping mechanisms are combined with different motor strengths, in order to adjust the performance of the pump to the situation in each instance, i.e. to the liquid in each instance, in this manner. [0006] In an advantageous further development of this idea, it is furthermore known to assign pumping mechanisms to the containers being used, in fixed manner, so that the extraction of the chemical liquids, some of which are hazardous, can take place, without contact, if at all possible. Such contact could not be precluded, for example, during introduction of the pumping mechanism into the container. This is avoided in that the container forms a tightly sealed unit with the pumping mechanism. [0007] In that the extraction tap is also assigned to the container, it is merely necessary to add the motor that is required to operate the pumping mechanism. Such motors are usually flanged or screwed onto the pumping mechanism. However, it represents a problem that the housings in which the motors are housed are frequently rather difficult to handle. Furthermore, it is difficult to simultaneously set the motor onto the pump head, hold it there at the same time, and close the connecting flange or, even more, the screws that might be required. [0008] In front of this background, the invention is based on the task of creating a pump drive that makes possible a simple and, at the same time, effective connection of the pump drive with a container pump and/or a container. [0009] The solution of this task is accomplished with a pump drive according to the characteristics of the main claim. Other practical embodiments of the pump drive can be derived from the dependent claims. [0010] According to the invention, the pump drive is surrounded by a housing that has at least one handle. This at least one handle activates a locking mechanism that locks the pump drive onto the interface of the pumping mechanism after the motor has been set onto the latter. [0011] During activation of the handle, the locking mechanism is set out of engagement, and the pump drive can be positioned on the pumping mechanism. Because the motor is sometimes held by the at least one handle during a two-handed method of procedure, no hand is needed for opening and closing the latch. The pump drive is set on with the handle activated, then the handle is let go. [0012] This sets the locking mechanism into engagement with the pumping mechanism, so that the pump drive can be let go without risk. [0013] It is practical if the pump according to the invention is developed further in that the housing has two handles. In this way, the position of both hands on the drive is predetermined. [0014] By means of a practical, uniform distribution of the handles along the circumference of the housing, the weight of the pump drive is uniformly distributed, so that handling of the device is simplified and facilitated. Furthermore, the user is thereby admonished and encouraged to hold both hands at the positions provided for this purpose, so that pinching or coming into contact with the transported fluids is avoided. [0015] In an advantageous further development of the pump drive, the handles have a contact edge along which the handle lies against the housing in its locking position. In this connection, the handle has a rotating end and a locking end. The rotating end is firmly connected with the locking mechanism, which is articulated onto the housing by way of a pivot axis, so as to pivot. The locking end can be releasably connected with the housing. Thus, it is possible to pivot the handles away from the housing, about the axis of rotation. Opening and closing of the locking mechanism, which is firmly connected with the handle, goes along with this pivoting movement. This rotating connection forms the articulated lever in the region of the locking mechanism, together with a lever that is configured in loop shape. In this connection, one loop edge is connected with the housing wall, so as to rotate, while the opposite loop edge is connected with the handle, also so as to rotate. In the locked state, the holding points of this loop lie covered behind the contact edge, since the handle has a recess in this region. The holding points furthermore also lie offset in the direction of the contact edge, so that when the handle is pivoted away, rotation of the loop around both holding points takes place. In the pivoted-out state, which represents the unlocked state, the locking mechanism is put out of engagement, so that the pump drive can be set into the pumping mechanism or removed from it. The greatest excursion of the handle is determined by the size of the loop, which is oriented in the direction of force of a tensile force on the handle, in the moved-out state. In the moved-in state, which is also the locked state, the locking mechanism is also fixed, and the drive cannot be removed from or flanged onto the pumping mechanism. [0016] This is expanded in that a safety locking mechanism is assigned to each handle. This safety locking mechanism holds the handle firmly in the locked state. This prevents the handles from being unintentionally opened during operation, and the running motor from coming off the pump shaft, which could lead to damage and also to injuries. [0017] It is additionally practical if the locking mechanism establishes a mounting that prevents rotation. Of course, every rotating machine must be mounted in some way, relative to its working point, so that it does not rotate. However, it is practical if this is done by the locking mechanism. When the pump drive is set onto the pumping mechanism, it can happen that the pump drive is set down onto the pump mechanism, not in the intended position. However, this position can be reached by turning the pump drive relative to the pumping mechanism. The handles can be brought into the locking position only when they are in the correct position. If a multi-edge recess on the pumping mechanism were to guarantee resistance to turning, the pump drive would have to be set down in another position, if necessary. [0018] In order to be able to bring the pumping speed and intensity up to the desired measure, it is practical if the motor has a speed of rotation regulator assigned to it. Since different liquids possess different density and viscosity values, a direct adaptation to the requirements of the specific use can be adjusted in this manner. [0019] Furthermore, it results in advantages if the speed of rotation regulator can be reached from the outside, so that such a change is possible within a short period of time, without any interventions within the housing. [0020] In a concrete embodiment, such a speed of rotation regulator is integrated into the housing with a positive lock. In this connection, an embodiment is preferred in which the turning handle of this speed of rotation regulator is disposed on the side of the housing that lies opposite the driving mechanism. [0021] Thus, hands are again kept out of the region of force transfer, to the greatest possible extent. An additional facilitation is offered by handle depressions distributed over the circumference of the turning handle, which give additional hold when activating the speed of rotation regulator, particularly with work gloves. [0022] In order to protect the motor both from moisture and from vibrations, it is surrounded by a foam insert within the housing. [0023] In this way, while the motor is connected with the housing in fitted manner, this is an elastic connection that absorbs the forces that occur, to a great extent. Universal motors are used for the pump drive according to the invention, the advantage of which consists in the fact that they increase their torque in the case of a reduction in the speed of rotation that occurs due to stress, and therefore counteract the effect of the slow-down. [0024] Furthermore, it can be operated both with direct current and with alternating current, which makes it interesting for many different applications. Continue reading about Pump drive... Full patent description for Pump drive Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this Pump drive patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. 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