Патент USA US2406317код для вставки
Aug. _27, 1946. G, ¿ONDE » »2,406,317 DOUBLE sUcTIoN PLUNGER Filed April 16, 1945 I ~ @yg/52" _. y‘231,116,311` l Patented Aug. 27, 1946 UNITED STATES f PATENT OFFICE 2,406,317 DOUBLE sUo'rIoN rLUNoEnV ¿ Gust Bonde, Marinette, Wis. Application April 16, 1945, Serial No. 588,615 2 Claims. ‘(Cl. ‘1_-255) ~ 1 îlilîn plungers for clearing clogged drains or the e. An object of this invention is to provide an irn proved suction plunger which igsimp-le in con struction and will automatically return to its nor the rod Il, gaged about the drain opening. The plunger rod Il is then moved downwardly so as to flex and distort the inner cup member I0, as shown in dotted lines in Figure 1. Pressure in a downward suction cups, said cups cooperating with each types of ñxtures. . Another object of this invention is to provide a device of this kind which, by reason of the novel . In the use and operation of this device, the cup ‘member Hl has the flange or rib II thereof en mal position, the device including inner and outer other to provide an eiiicient suction action for quickly cleaning or loosening drains in various 2 Il, bearing at its lower end against'the upper end of the boss I2, and bearing at its upper end against a transversely extending pin I Slengaging through This invention relates to improvements in suc ` direction on plunger rod I'I will compress the spring I8 so that the outer cup member I0 will , be tensioned against the surface of the fixture about the opening. As the inner cup member Iä fîeXes downwardly the air inside of this member will be forced downwardly and this air will pro construction thereof, is more'powerful in its op eration than conventional suction cups. With the above and such other objects in view, vide a force for unclogging the drain. as may hereinafter more fully appear, I have in y The plunger rod il may be worked up and down and as the plunger rod- I1 is released the spring vented the device shown in the accompanying drawing, in which: , ,Á Figure 1 is a vertical section, partly rbroken away 20 I3 will force this rod upwardly so as to return ' the inner cup member Id to substantially its nor mal position. In this manner the pump will op and in detail, of a suction pump constructed ac cording to an embodiment of this invention. erate automatically on its return stroke and, the downward pressure on the outer cup member II! Referring to the drawing, the numeral Il) desig 25 will provide sufficient pressure to seal the flange I I about the drain opening. nates generally an outer> resilient. cup member The above is the preferred embodiment of my which is formed at the lower large open end there invention but it is to be understood that modifica of with a flange or rib Il. rThe cup member I9 is tions may be resorted to that fall within the scope I formed at the upper end thereof with a boss I2 having an opening I3 therethrough, the purpose 30 of the claimed invention. Figure 2 is a sectional View taken on the line 2_2 of Figure 1. for which will be hereinafter described. What I claim is: ' An inner resilient cup member I4 is disposed within the outer cup member I B, and opens down wardly. 4'I‘he inner cup member I4 terminates at its lower open end adjacent the lower end of the outer cup member I0, and is secured to the inner yside of the outer cup vmember ID, as indicated at l5. Y 1. A suction plunger> comprising a >resilient 35 outer cup having an opening rand a boss about said opening, an inner cup secured at its lower end to said outer cup, said inner cup having an open ing aligning with the opening of said outer cup, and a plunger rod secured to said inner cup and slidably engaging through said ñrst opening. 2. A suction plunger comprising a resilient The inner cup member I4 may be vulcanized or outer `cup having an opening and a boss about said otherwise ñrmly secured to the outer cup member opening, an inner cup secured at its lower end to I0 so as to form substantially an integral bond. said outer cup, said inner cup having ank opening The inner cup member I4 is provided with an up aligning with the opening of said outer cup, a wardly extending boss I6, and, as shown in Figure plunger rod secured to said inner cup and slidably 1, when the device is in normal position the upper end of the inner cup member I4 will be disposed in 45 engaging through said first opening, a spring about said rod bearing at one end against said downwardly spaced relation to the upper end of boss, and a spring tensioning member iixed rela the outer cup member I0. The lower end of a >plunger rod I1 is threaded into the boss I6, and slidably engages through the opening I3 of the _boss l2. . A spring IB is positioned about the plunger rod tive to said rod and bearing against the opposite end of said spring. ’ GUST BONDE.