Abstract:
A disposable oil draining apparatus for a vehicle comprises a normally-closed valve having a threaded end which replaces the normal drain plug in the vehicle oil pan. A valve actuator is releasably connected to the valve by way of a spring-loaded latch and is in communication with a disposable plastic bag which serves as a drain reservoir.

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to apparatus for draining oil from a motor vehicle and is particularly concerned with oil draining apparatus in which at least a portion of the apparatus is disposable. 
     `Description of the Prior Art 
     Oil changing apparatus normally found in service stations and quick-change and lubrication stations are known in the art in which a large funnel is telescoped to a position adjacent the oil pan of a vehicle to direct the used oil into a reservoir after the oil pan plug has been removed. 
     Various devices have been made for home use which generally constitute a reservoir having a sloped surface for receiving and directing the used oil into the reservoir. These are generally portable plastic devices having a sealing plug which may be removed to empty the reservoir for later use. 
     It is also known in the art to provide, in place of the oil pan plug, a valve having an actuating lever. This valve permits discharge of the used oil without the necessity of removing a plug by simply moving the lever. 
     In all of the art mentioned above, the used oil flows freely through the air to some type of funnel device. The service station devices generally prevent or minimize splashing; however, the devices made for home use tend to create splashing which requires later clean up of the area. 
     SUMMARY OF THE INVENTION 
     The object of the present invention is to provide a disposable oil collection apparatus and includes the attendant object of providing an oil collection apparatus in which splashing and clean up is eliminated. 
    
    
     BRIEF DESCRIPTION OF THE DRAWING 
     Other objects, features and advantages of the invention, its organization, construction and operation will be best understood from the following detailed description, taken in conjunction with the accompanying drawing, on which: 
     FIG. 1 is an exploded view of oil collection apparatus according to the invention; and 
     FIG. 2 is an enlarged view of a seal and latch structure and shows a variation of the reservoir in the form of a vent. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Referring to the drawing, an automobile auto pan 10 is illustrated in a fragmentary sectional view. The oil pan 10 includes a threaded aperture 12 which normally receives a removable threaded plug for sealing the oil pan and for permitting discharge of the used oil upon removal thereof. 
     A disposable bag 14, such as a plastic bag (preferably flexible), serves as a reservoir for receiving the oil. The bag 14 includes a neck 16 as an oil inlet. The bag may also be provided with graduations, such as illustrated at 18, to indicate the amount of oil drained. Depending upon the size of the bag, and with the knowledge of the oil capacity of the vehicle, such a bag may be used more than once. 
     A valve structure is generally illustrated at 20 as comprising two major components, namely a valve 22 and a valve actuator 30. 
     The valve 22 comprises a threaded portion 24 to be received in the threaded aperture 12 of the oil pan 10. The valve 22 also comprises a spring-loaded latch 26 which includes an aperture 28 which is generally aligned, and upon actuation by plugging in the actuator 30, is aligned, with a passageway (not shown) through the valve 22. The valve 22 also includes, internally and also not shown, the actual valve structure. 
     The valve actuator 30 comprises a barbed end 32 to be frictionally received within the hollow neck 16 of the bag 14 (see FIG. 2). The actuator 30 also includes an open passageway 34 for communication with the passageway in the valve 22. The actuator 30 further comprises an actuating section 36 including a peripheral groove 38 and an automatically sealing O-ring 40. 
     Suitable valves include the PMC series 1/8&#34; Flow Acetal Delrin ® quick coupling valve and the LC 220 1/4&#34; Flow Brass Series (chrome plated) quick coupling valve manufactured by Colder Products Co. 2367 University Avenue, St. Paul Minn. The Acetal Delrin valve has a rated operating temperature in the range of -40° F. to 180° F. and the brass valve has a rated operated temperature of 180° F. with no minimum operating temperature. It has been determined, however, that both the brass and Delrin can be operational at above 250° F. In the event an increased flow rate is desired, the inside diameter of the valve parts may be enlarged. 
     Oil is drained from the oil pan 10 by moving the latch 26 radially inwardly by plugging the actuating section 36 completely through the aperture 28 and automatically releasing the latch 26 as the edge of the aperture 28 locks into the peripheral groove 38. 
     After the used oil has completely drained, the latch 26 is operated to release the edge of the aperture 28 from the peripheral groove 38 and the actuating section 36 is unplugged from the valve 22. 
     After draining and removal of the actuator 30, a plug 42, tethered to the valve 22 by way of a strand 44, may be inserted a short distance into the aperture 28 as a protection against dust and the like, but without extending sufficiently for it to open the valve. The strand 44 and plug 42 are preferably integral with an annular washer disposed around the threaded end 24. 
     By the same token, a sealing cap 46, tethered to the valve actuator 30 by strand 48, may be employed to seal the actuating section 36 so that the bag may be sealed for disposal or, if there is sufficient capacity, for later use. 
     According to the present invention, at least the bag 14 is disposable; however, with the sealing cap 46 in place on the actuating section 36, the bag 14 and the valve actuator 30 may together form a disposable unit. 
     Since the oil being transferred to the bag 14 may be very hot, it is preferred that the bag be provided with effective insulation. In the embodiment illustrated, a hand or thumb hole 14a is provided adjacent the top of the bag, away from the oil. The bag may of course alternatively, or additionally be provided with an outer insulation layer or be formed of an insulating foam material. 
     If the reservoir is a rigid structure and air must be displaced, a vent 47 and a sealing plug 50 may be provided. 
     Although I have described my invention by reference to particular illustrative embodiments, many changes and modifications of the invention may become apparent to those skilled in the art without departing from the spirit and scope of the invention. I therefore intend to include within the patent warranted hereon all such changes and modifications as may reasonably and properly be included within the scope of my contribution to the art.