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US3759276A Expired / Lapsed US ⏱️ 0.0 years remaining

Drawer type pan washing machine

Assignee: METALWASH MACHINERY CORP
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Filing: 1971-12-30
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Granted: 1973-09-18
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Expires: 1991-12-30
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Abstract

Abstract An automatic washing machine for food handling pans having drawers that are interconnected whereby when one drawer is extended out of the housing the other is retracted into the housing. The housing is sealed by the fully extended drawer and by the fully retracted drawer. The drawers are mounted in the housing in a side-by-side relationship facing an assembly of washing and rinsing nozzles. The machine also has a hinged cover permitting insertion of a rack therein for washing other objects.

Inventors

  • 👤 R Nolte

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 23:48
CPC Classifications
A; A47; A47L; A47L15/00; A47L15/0084; A47L15/14; A47L15/42; A47L15/50

Claims Analysis

Total Claims: 19
Claim 1
Independent Claim 76 words
A drawer type washing machine comprising a machine housing, washing and spray units in said housing, a pair of drawers for holding objects to be washed and mounted side-by-side in said housing, and a pulley arrangement operatively connecting said drawers whereby only one of said drawers may be fully retracted in said housing at any time said washing and spray units being disposed to direct a washing liquid toward objects to be washed in said drawers.
Claim 2
Dependent Claim 76 words
A drawer type washing machine comprising a machine housing, washing and spray units in said housing, a pair of drawers for holding objects to be washed and mounted side-by-side in said housing, and a pulley arrangement operatively connecting said drawers whereby only one of said drawers may be fully retracted in said housing at any time said washing and spray units being disposed to direct a washing liquid toward objects to be washed in said drawers.
Claim 3
Dependent Claim 33 words
A drawer type washing machine as claimed in claim 1 wherein separate, spaced washing and spray units are provided in each side of said housing and directed toward opposite sides of the drawers.
Claim 4
Dependent Claim 36 words
A drawer type washing machine as claimed in claim 2 wherein said washing and spray units are positioned to direct the washing and rinsing liquids laterally into the open sides of said drawers within said housing.
Claim 5
Dependent Claim 34 words
A drawer type washing machine as claimed in claim 1 wherein said housing is so constructed that it is sealed against leakage when said drawers are either extended from or retracted into said housing.
Claim 6
Dependent Claim 112 words
A washing machine apparatus comprising a housing, washing and spray units in said housing, a pair of drawers adapted to hold objects to be washed, said washing and spray units being disposed to direct a washing liquid towards objects held by said drawers, said housing having openings for receiving said drawers, means for moving said drawers into and out of said openings in side-by-side relationship, means interconnecting said drawers whereby retraction of either of said drawers into said housing effects the removal of the other of said drawers from said housing, and means for sealing said openings when said drawers are fully retracted into said housing and fully extended from said housing.
Claim 7
Dependent Claim 112 words
A washing machine apparatus comprising a housing, washing and spray units in said housing, a pair of drawers adapted to hold objects to be washed, said washing and spray units being disposed to direct a washing liquid towards objects held by said drawers, said housing having openings for receiving said drawers, means for moving said drawers into and out of said openings in side-by-side relationship, means interconnecting said drawers whereby retraction of either of said drawers into said housing effects the removal of the other of said drawers from said housing, and means for sealing said openings when said drawers are fully retracted into said housing and fully extended from said housing.
Claim 8
Dependent Claim 48 words
The apparatus of claim 5 wherein said drawers each have a front panel and a back panel, and said sealing means comprises recess means on said openings adapted to engage said front and rear panels in the retracted and extended positions of said drawers for sealing said openings.
Claim 9
Dependent Claim 75 words
The apparatus of claim 5 wherein said means for moving said drawers into and out of said housing comprises separate first track means within said housing for each of said drawers, and separate second track means outside of said housing for each of said drawers, each of said drawers having a front panel positioned to ride on the respective second track means, and a rear panel adapted to ride on the respective first track means.
Claim 10
Dependent Claim 171 words
A washing apparatus comprising a housing having a pair of side-by-side openings in one wall thereof, said housing having an extension projecting outwardly from said wall below said openings, interior track means in said housing aligned with each of said openings, exterior track means extending from said housing in alignment with each of said openings, washing and spray units in said housing, a pair of substantially identical drawers for holding objects to be washed, said units being disposed to direct a washing liquid towards objects held on said drawers, each of said drawers having open sides, said drawers being positioned in separate said openings and having front panels positioned to ride on separate exterior tracks and back panels adapted to ride on separate interior tracks, said front panels being shaped to form a water-tight seal of their respective openings when the respective drawer is retracted into said housing, said back panels being shaped to form a water-tight seal of the respective opening when the respective drawer is withdrawn from said housing.
Claim 11
Dependent Claim 171 words
A washing apparatus comprising a housing having a pair of side-by-side openings in one wall thereof, said housing having an extension projecting outwardly from said wall below said openings, interior track means in said housing aligned with each of said openings, exterior track means extending from said housing in alignment with each of said openings, washing and spray units in said housing, a pair of substantially identical drawers for holding objects to be washed, said units being disposed to direct a washing liquid towards objects held on said drawers, each of said drawers having open sides, said drawers being positioned in separate said openings and having front panels positioned to ride on separate exterior tracks and back panels adapted to ride on separate interior tracks, said front panels being shaped to form a water-tight seal of their respective openings when the respective drawer is retracted into said housing, said back panels being shaped to form a water-tight seal of the respective opening when the respective drawer is withdrawn from said housing.
Claim 12
Dependent Claim 34 words
The apparatus of claim 8 further comprising means interconnecting said drawers whereby retraction of each of said drawers into said housing effects the movement of the other of said drawers out of said housing.
Claim 13
Dependent Claim 40 words
The washing apparatus of claim 9 wherein said coupling means comprises pulley means affixed to said housing extension, and cable means passing around said pulley wheel means and having separate ends affixed to the front panels of separate said drawers.
Claim 14
Dependent Claim 46 words
The apparatus of claim 8 wherein the sides and tops of said openings have recesses, and said front panels have flanges on their edges extending toward said housing for engaging said recesses to form a water-tight seal when the respective drawer is retracted into said housing.
Claim 15
Dependent Claim 55 words
The apparatus of claim 8 wherein said housing has internally extending projections surrounding the tops and sides of each of said openings, and said back panels have edge flanges extending toward said wall, whereby said edge flanges surround said projections when the respective drawer is fully extended from said housing to form a watertight joint.
Claim 16
Dependent Claim 35 words
The apparatus of claim 8 wherein said housing encloses washing and rinsing means disposed in opposite sides of said housing for directing washing and rinsing fluids toward the open sides of a drawer retracted therein.
Claim 17
Dependent Claim 46 words
The apparatus of claim 13 wherein said housing further includes limit switch means actuable upon the full retraction of each drawer into said housing, said limit switch means being connected to inhibit operation of said washing means unless a drawer is fully retracted in said housing.
Claim 18
Dependent Claim 81 words
The apparatus of claim 8 in which said housing further comprises a top cover that may be opened, both of said drawers being adapted to be fully extended from said housing to seal their respective openings, said apparatus further comprising a tray insertable through the top of said housing when said cover is open, and having a base adapted to rest on said interior tracks, whereby objects may be washed in said apparatus that are not adapted to fit said drawers.
Claim 19
Dependent Claim 57 words
The apparatus of claim 15 wherein said tray comprises a base adapted to rest on said interior tracks, a first wire frame affixed to said base and defining a first rectangular opening for holding objects, and a second lower wire frame defining a smaller opening therein, whereby said wire frames are adapted to hold objects for washing.

References Cited (Backward Citations)

No citation records indexed.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-09-17 1977-03-19 1977-09-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-09-17 1981-03-19 1981-09-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-09-17 1985-03-19 1985-09-18 $7700.00 Window Closed / Lapsed

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