WET PICK-UP SUCTION NOZZLE WITH FILTER MEANS

• US 3,571,841 A
• Filed: 04/28/1969
• Issued: 03/23/1971
• Est. Priority Date: 04/28/1969
• Status: Expired due to Term

• Current Assignee: Darwin S. Crouser
• Original Assignee: Darwin S. Crouser
• Inventors: Crouser, Darwin S.
• Application Number:
  US04/819,698
• Time in Patent Office: 694 Days
• US Class Current: 15/401
• CPC Class Codes: A47L 9/02 Nozzles suction nozzles for fluid transport B65G51/00

Abstract

An ambulatory wet pickup suction nozzle has a one-piece elastomeric squeegee member including a pair of parallel lips connected by an apertured web. A rigid retainer bracket positioned between the squeegee lips is removably mounted in the inlet of the nozzle. The squeegee web is trapped between the retainer bracket and fixed mounting means within the mouth inlet. The retainer bracket is generally channel-shaped in cross section, having a planar central web with a plurality of spaced small perforations along its length so as to allow air therethrough to function as a secondary filter. A removable filter bar, functioning as a primary filter, is designed to be removably mounted on the face of the retainer bracket. The filter bar is generally V-shaped in cross section, the base of the Vmasking the central web of the retainer bracket. The converging surfaces of the filter bar, forming the V, have castellated outer edges which act in conjunction with the retainer bracket, against which they abut, as perforations forming an easily cleanable primary filter.

Claims

1. A wet pickup suction nozzle comprising:

a. a nozzle body;

b. a horizontally elongated inlet in said nozzle body;

c. an elongated squeegee member having a pair of squeegee lips and an interconnecting web portion formed integrally therewith, said lips projecting substantially perpendicularly from opposite sides of said web portion;

d. an elongated planar retainer bracket located in abutting relationship with said web portion of said squeegee between said pair of squeegee lips, primary filter ports formed in said retainer bracket, said primary filter ports operatively connecting the interior of said nozzle body with the open end of said inlet through said central web portion;

e. means for releasably mounting said retainer bracket on said nozzle body so as to trap said web portion between fixed abutment means within said inlet and a planar face of said retainer bracket;

f. a generally V-shaped elongated filter bar member;

g. means for releasably mounting said elongated filter bar member across the face of said retainer bracket with the open mouth of the V abutting a planar face of said retainer bracket and with the apex of the V being located away from the abutting planar face of said retainer bracket, whereby said primary filter ports are masked; and

h. a plurality of secondary filter ports formed, where at least in part, in said filter bar member whereby material which would clog a wet pickup suction nozzle, when said nozzle is in operation, is substantially retained by said secondary ports when said filter bar is releasably mounted in place on said inlet of said nozzle body.

2. A wet pickup suction nozzle as recited in claim 1 wherein said secondary ports are formed by the abutment of diverging surfaces of said filter bar with said retainer bracket, said portions of said secondary filter ports formed in said filter bar being castellations formed in the outer edges of said surfaces of said filter bar.

3. A wet pickup suction nozzle as recited in claim 1 wherein said means for releasably mounting said elongated filter bar across said planar face of said retainer bracket aids in the aligning of the body of said filter bar with respect to said retainer bracket prior to said body of said filter bar coming into abutting contact with said planar face of said retainer bracket.

4. A wet pickup suction nozzle as recited in claim 3 wherein said means for releasably mounting said elongated filter bar across said planar face of said retainer bracket includes;

a plurality oF elongated cutouts in said planar face of said retainer bracket; and

a plurality of complementary parallel spring fingers, each of which is designed to substantially span one of said elongated cutouts.

5. An elongated filter bar for use in a wet pickup suction nozzle comprising:

a. an elongated V-shaped filter bar;

b. means for releasably mounting said filter bar across a nozzle inlet of said wet pickup suction nozzle with the open face of the V masking the nozzle inlet; and

c. a plurality of filter ports extending at spaced intervals into the interior of said elongated V-shaped filter bar.

6. The elongated filter bar of claim 5 wherein said filter ports are formed by castellations extending along the edges of said filter bar defining the mouth of said V.

7. An elongated filter bar as recited in claim 6 wherein said means for releasably mounting said elongated filter bar across the planar face of the retainer bracket includes a plurality of parallel spring fingers, each of which is designed to substantially span a complementary elongated cutout in a planar face of a retainer bracket.

8. An elongated filter bar as recited in claim 5 wherein said means for releasably mounting said elongated filter bar across the planar face of a retainer bracket aids in the aligning of the body of said elongated filter bar with respect to the retainer bracket prior to said body of said filter bar coming into abutting contact with a planar face of the retainer bracket.

9. An elongated filter bar for use in a wet pickup suction nozzle comprising:

a. an elongated planar member;

b. a plurality of adjacent tabs formed in one elongated edge of said planar member;

c. a plurality of said adjacent tabs being bent out of the plane of said planar member in opposite directions so as to form in appearance a substantially V-shaped filter bar when said filter bar is looked at edgewise; and

d. means for releasably mounting said filter bar across the inlet of a wet pickup suction nozzle with the open mouth of the V masking said nozzle inlet, so that spaces between alternate tabs act as filter ports.

10. The elongated filter bar of claim 9 wherein said means for releasably mounting said filter bar across an inlet of a wet pickup nozzle comprises at least one of said tabs which lie substantially in the plane of said filter bar and which functions as a detent means.