US3025801A

US3025801A - Pump

Info

Publication number: US3025801A
Application number: US754986A
Authority: US
Inventors: Paikert Hans Peter
Original assignee: Individual
Current assignee: Individual
Priority date: 1958-08-14
Filing date: 1958-08-14
Publication date: 1962-03-20
Anticipated expiration: 1979-03-20

Description

March 20, 1962 H. P. PAIKERT PUMP Filed Aug. 14,, 1958 INVENTOR. fli fM ATTORNEY.

Filed Aug. 14, 1958, $91. No. 754,986 1 Claim. 01. 103-132 The present invention relates generally, as hereinafter set forth, to a hermetically sealed pump.

Thus it is a primary object of this invention to provide a pump of the above mentioned type, which has the prime mover outside and independent of the pump itself, and not, as now commonly used, arranged within the pumphousing.

To accomplish the above this invention comprises the features hereinafter described and claimed, as the description and drawing set forth in detail certain improvements relative to the invention.

With the above and other objects in view, this invention consists of the novel features of construction, combination and arrangement of parts, hereinafter fully described, claimed and illustrated in the accompanying drawing, forming part of this specification, and in which similar characters of reference indicate corresponding parts in all views, and in which:

FIGURE 1 is a perspective view of the invention with parts broken off.

FIGURE 2 is a cross sectional view.

FIGURE 3 is a similar view.

Referring more particularly to the drawing a fixed housing having a cylindrical fluid space 11 is provided with a cylindrical displacing rotor or cam 12 of smaller diameter than that of the spac 11. The cam i mounted for oscillation within the space 11 on an eccentric or crank 14 on a rotary shaft 15 so that as the shaft is rotated, a line of tangency between the cam rotor 12 and the inner wall 13 of the housing moves in a substantially cylindrical path.

The rotor is provided with a lip or longitudinal fin 16 slid'ably held between two

half round rods

17 and 18 which turn in housing recesses 19 axially parallel with the rotor. The housing is provided with intake and

exit channels

22 and 24 communicating with the space 11 on opposite sides of the lip 16 and above the rotor.

The description thus far is applicable to known pumps.

The improvements of my invention consist of a balloonlike cover or closure 28 of flexible or yieldable material, such as rubber, Bellows metal or plastic material arranged fluid-tight over the ends 29 of the pump housing and fastened to the rotor 12 by two inner and

outer plates

30 and 32 on one end of the rotor and similarly by

plates

34 and 36 on the opposite end; the ends 37 of the flexible cover 28 being fastened between the respective pairs of plates; and the inner plates engaging fluid-tight over the housing ends 29.

On the outside of the housing 10 is a screw-threaded 3,025,801 Patented Mar. 20, 1962 See clamp 38 having a flange 40 which holds the cover 28 in place.

As shown, the respective ends of the rotor and housing are co-planar.

Fittings 41 and 43 on the housing, and projecting fluidtight through the cover 28, are provided for the exit and inlet channels. Valving for the channels may be provided such as shown by the check valve 42 for the exit.

In operation, the

inner plates

30 and 34 wipe fluidtight against the housing ends 29 and the half rod ends as the rotor oscillates. The marginal portions or ends 37 of the cover 28 move with the rotor and plates so that the bulges 44 of the cover travel with the rotor and in a more or less circular motion. The cover being firmly held between the plates permits no leakage and effectively seals the working part off from the exterior.

It is obvious that change may be made in the form, construction and arrangement of the several parts, as shown, within the scope of the appended claims, without departing from the spirit of the invention, and I do not, therefore, wish to limit myself to the exact construction shown and described herein.

What I claim as new, and desire to secure by Letters Patent of the United States, is:

In combination, a pump body having a substantially cylindrical chamber and a substantially cylindrical displacement member mounted for planetary movement therein, the body and member having parallel axes and opposite coplanar ends, plates fast on th ends of the member and overlapping the body ends and slidable thereon approximately fiuid tight, a bag-like closure of flexible fluid-tight material covering the body and having marginal portions over the outer faces of said plates, and clamping plates secured fast to the displacement member adjacent the first mentioned plates and holding the said marginal portions of the cover fluid-tight against the first mentioned plates to exclude leakage of fluid passing between the first mentioned plates and body from the generally ambient Zones open to th atmosphere.

References Cited in the file of this patent UNITED STATES PATENTS 569,350 Potter Oct. 13, 1896 1,780,109 Berglund Oct. 28, 1930 1,906,142 Ekelof Apr. 25, 1933 2,133,358 McCormack Oct. 18, 1938 2,351,050 Karey June 13, 1944 2,545,604 Byram Mar. 20, 1951 2,585,949 MacCormack M Feb. 19, 1952 2,849,962 Musser Sept. 2, 1958 2,915,979 Bourke et a1. Dec. 8, 1959 FOREIGN PATENTS 647,172 Germany June 29, 1937 678,936 Germany July 25, 1939