Abstract An arrangement for driving a fluid-circulating pump includes a drive pulley which serves as means for tensioning the driving means, such as for example, a belt, associated therewith. The pump is mounted so as to be pivotable about the axis of a tubular element defining a fluid orifice of the pump, such axis being offset from the axis of the pulley. The adjustment of the tension of the pump drive belt is thus effected by pivoting the pump, through a limited arc, about the orifice axis whereby the pulley is pivoted about the same axis thereby tensioning the belt. The assembly further includes a cover plate integrally formed with the tubular element both of which are formed of molded plastic so as to serve as gasket means, and a circular sealing element is disposed upon the tubular element so as to prevent leakage between the element and the system through which the fluid is circulated.
An arrangement for driving a fluid-circulating pump comprising: a housing; a pulley wheel associated with said housing and being rotatable about a first axis; tensionable means for driving said pulley wheel about said first axis; said housing having associated therewith means defining a fluid orifice the axis of which is offset and parallel to said first axis of said pulley; and means for permitting said housing to be pivoted about said orifice axis, whereupon said pulley is likewise pivoted about said orifice axis so as to adjust the tension within said tensionable driving means.
Claim 2
Dependent Claim
94 words
An arrangement for driving a fluid-circulating pump comprising: a housing; a pulley wheel associated with said housing and being rotatable about a first axis; tensionable means for driving said pulley wheel about said first axis; said housing having associated therewith means defining a fluid orifice the axis of which is offset and parallel to said first axis of said pulley; and means for permitting said housing to be pivoted about said orifice axis, whereupon said pulley is likewise pivoted about said orifice axis so as to adjust the tension within said tensionable driving means.
Claim 3
Dependent Claim
43 words
A driving arrangement as set forth in claim 1, wherein said means defining said fluid orifice comprises a rigid tubular element which is adapted to be fitted within a corresponding orifice of a circulation system through which said fluid is to be pumped.
Claim 4
Dependent Claim
33 words
A driving arrangement as set forth in claim 2 wherein said rigid tubular element is provided with a groove disposed upon the external periphery thereof within which a sealing element may be seated.
Claim 5
Dependent Claim
16 words
A driving arrangement as set forth in claim 3, wherein said sealing element is an O-ring.
Claim 6
Dependent Claim
29 words
A driving arrangement as set forth in claim 3, wherein said groove for seating said sealing element is disposed at the junction between said tubular element and said housing.
Claim 7
Dependent Claim
30 words
A drIving arrangement as set forth in claim 2, further comprising: a cover plate disposed over said housing; and said rigid tubular element is integrally formed with said cover plate.
Claim 8
Dependent Claim
32 words
A driving arrangement as set forth in claim 6, wherein said cover plate and said tubular element are made of molded plastic so as to serve as gasket means for said pump.