Discharge means for canister vacuum cleaner

• US 4,118,208 A
• Filed: 04/25/1977
• Issued: 10/03/1978
• Est. Priority Date: 04/25/1977
• Status: Expired due to Term

• Current Assignee: George Lewis Klinedinst
• Original Assignee: George Lewis Klinedinst
• Inventors: Klinedinst, George Lewis
• Primary Examiner(s): Lutter, Frank W.
• Assistant Examiner(s): Prunner, Kathleen J.
• Application Number:
  US05/790,542
• Time in Patent Office: 526 Days
• Field of Search: 55/433, 55/432, 55/472, 55/DIG. 3, 251/147, 251/100, 251/324
• US Class Current: 55/433
• CPC Class Codes: A47L 7/0038 with means for emptying the tanks
• CPC Class Codes: A47L 9/106 Dust removal
• CPC Class Codes: Y10S 55/03 Vacuum cleaner

Abstract

A canister type vacuum cleaner having cylindrical walls and a bottom therein supporting at the upper open end thereof a suction type blower and filter is provided with discharge means attachable to the bottom of the canister and including a transverse slide adapted to close an opening formed in a supporting plate for the slide and an additional coaxial opening which is to be formed in the bottom of the canister, the canister also including a conical, funnel-like deflector having a central opening coaxial with the opening in the bottom of the canister, the slide forming a closure which is spring-pressed in closing direction and including a manipulating handle and an end which may be operated when the slide is in open position to maintain the same in said position to facilitate emptying the canister from the bottom thereof without requiring removal of the suction head and dumping of the canister.

Claims

1. Discharge means for use with a canister type vacuum cleaner having a canister which detachably supports a suction head at the upper end thereof and having a bottom at the lower end of said canister in which a circular opening is formed, said discharge means comprising in combination, a mounting plate having a central circular opening similar in size to said opening in the bottom of said canister and positioned coaxially therewith, means adapted to secure said plate firmly to the lower surface of said bottom with said openings in registry, a pair of parallel guide channels connected to the surface of said plate opposite the surface mounted against said bottom of said canister and each guide channel respectively positioned adjacent opposite sides of said central opening, a cut-off closure slide supported between said guide channels for close sliding engagement with the surface of said plate to which said channels are connected and having one end which moves toward and from said opening in said mounting plate, an actuating rod, connecting means on said one end of said slide to which one end of said rod is connected and the other end of said rod comprising an outer end extending beyond the periphery of the bottom of said canister for manual engagement, a spring mounted upon said rod, a bracket adapted to be fixed to said bottom of said canister adjacent the outer edge thereof and having a leg depending therefrom and provided with an aperture through which the outer end of said actuating rod extends, said spring on said rod extending between said leg and said connecting means on said one end of said slide and operable to move said slide from open to closing position over said opening in said plate, and the edge of said slide which moves toward and from said opening in said plate being in the form of a concave arc similar to a segment of the circumference of the circular opening in said mounting plate and said arcuate edge of said slide being bevelled to constitute a sharpened shearing edge cooperable with the perimeter of said central opening in said plate to remove any accumulated material extending through said opening.

2. The discharge means according to claim 1 in which said connecting means on said one end of said slide comprises a depending ear adjacent said one end of said slide, said one end of said actuating rod being connected to said depending ear on said slide and said spring being a coiled compression spring surrounding said rod and extending between said depending ear and depending leg of said bracket to effect movement of said slide in closing direction due to expansion of said spring.

3. The discharge means according to claim 2 in which said outer end of said rod has a portion reversely bent onto the rod and extending therealong a predetermined distance toward said one end of said rod, said one end of said rod being rotatably secured to said depending ear and the terminal end of said reversely bent end portion of said rod being adapted to abut the lower portion of the sidewall of said canister when said slide is extended to open position relative to said opening in said plate and said rod is rotated about its axis to effect such abutment and thereby maintain said slide in said open position.