Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
265 words
A rotary pump comprising a housing having a bore and a bore axis, a first adjacent lateral side wall having at least one inlet slit and a second adjacent lateral side wall having at least one outlet slit of at least equal size to said inlet slit for flow of medium axially therethrough, said slits in said lateral side walls defining the path of flow for said medium from said inlet axially directly into said bore and then from said bore axially directly to said outlet slit, a rotor mounted in the bore for rotation about an axis generally parallel to and eccentric to the bore axis, a plurality of vanes pivotally mounted on the periphery of the rotor having free ends in sliding sealing contact with said bore, each vane having lateral surfaces facing the rotor and an outer edge facing the bore, said outer edge on rotation of the rotor passing over an inner boundary edge of the inlet and outlet slits facing the bore of the housing, said inlet slit and outlet, curing along an arc around the rotational axis of rotor and extending in such a way that the trailing end of the inlet slit and the leading end of the inlet slit are disposed adjacent a central plane passing through the axis of the bore of the housing and the rotational axis of the rotor, the inlet slit being disposed at a greater distance from the rotational axis of the rotor than the outlet slit and the length of the outlet slit being greater than that of the inlet slit.
Claim 2
Dependent Claim
265 words
A rotary pump comprising a housing having a bore and a bore axis, a first adjacent lateral side wall having at least one inlet slit and a second adjacent lateral side wall having at least one outlet slit of at least equal size to said inlet slit for flow of medium axially therethrough, said slits in said lateral side walls defining the path of flow for said medium from said inlet axially directly into said bore and then from said bore axially directly to said outlet slit, a rotor mounted in the bore for rotation about an axis generally parallel to and eccentric to the bore axis, a plurality of vanes pivotally mounted on the periphery of the rotor having free ends in sliding sealing contact with said bore, each vane having lateral surfaces facing the rotor and an outer edge facing the bore, said outer edge on rotation of the rotor passing over an inner boundary edge of the inlet and outlet slits facing the bore of the housing, said inlet slit and outlet, curing along an arc around the rotational axis of rotor and extending in such a way that the trailing end of the inlet slit and the leading end of the inlet slit are disposed adjacent a central plane passing through the axis of the bore of the housing and the rotational axis of the rotor, the inlet slit being disposed at a greater distance from the rotational axis of the rotor than the outlet slit and the length of the outlet slit being greater than that of the inlet slit.
Claim 3
Dependent Claim
40 words
Rotary pump according to claim 1, wherein the inner and the outer edges of the lateral surfaces of the vanes and the inner and the outer boundary edges of each inlet and outlet slit are approximately parallel to each other.
Claim 4
Dependent Claim
36 words
Rotary pump according to claim 1, wherein the distance of the inlet slit from the rotational axis of the rotor is about 1.2-1.4 times larger than the distance of the outlet slit from this rotational axis.
Claim 5
Dependent Claim
23 words
Rotary pump according to claim 1, wherein the length of the outlet slit is about 1.3-1.4 times as that of the inlet slit.
Claim 6
Dependent Claim
63 words
Rotary pump according to claim 1, wherein at least one of said slits is formed with a bottom surface and a connecting channel machined into this bottom surface, and wherein the depth of the bottom surface of the slit is at least 0.4 times as large as the distance between the inner and outer edges of the opposing lateral surface of each vane.
Claim 7
Dependent Claim
29 words
Rotary pump according to claim 5, characterized in that the cross section of the slit is at least half as large as the cross section of the connecting channel.