← Back to Patent Explorer
US3685433A Expired / Lapsed US ⏱️ 0.0 years remaining

Deep fat fryer assembly

Assignee: Individual
•
Filing: 1971-04-14
•
Granted: 1972-08-22
•
Expires: 1991-04-14
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A deep fat fryer assembly which includes a fryer well for containing heated cooking oil to be used in frying, and a filtering and recirculation subassembly connected to the well. The filtering and recirculation subassembly includes a housing having in one side thereof a vertically extending, foraminous, cylindrical filter element through which cooking oil from the well is drawn to remove the solid residual and burned materials from the fat. In another portion of the housing, a gear pump is located and is attached to the shaft of the motor located outside the housing, with the outlet of the pump communicating with the well for recirculating clean, filtered cooking oil from the housing to the well. The housing may be quickly disassembled to permit access to be had to the filter for cleaning the filter and replacing it, and also for maintaining and servicing the gear pump.

Inventors

  • 👤 Cecil R Cunningham

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-25 08:42
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/12; A47J37/1223; Y; Y10; Y10S; Y10S210/00; Y10S210/08

Claims Analysis

Total Claims: 10
Claim 1
Independent Claim 151 words
A deep fat fryer assembly comprising: a well for containing cooking oil; a two-part housing, including: a bottom portion; and a cover portion detachably retained on said bottom portion; a filter sub-assembly in said housing and including: a rigid foraminous cylinder sealed at one of its ends against said cover portion and at its other end against said bottom portion when said cover portion is retained on said bottom portion; and a filter paper lining the foraminous cylinder; a pump in the bottom portion of said housing and spaced horizontally from said filter sub-assembly; a motor mounted on said cover portion outside said housing and driviNgly connected to said pump; first conduit means communicating said pump with said well for conveying filtered cooking oil from the pump to the well; and second conduit means connecting said well to the interior of said foraminous cylinder through the cover portion of said housing.
Claim 2
Dependent Claim 151 words
A deep fat fryer assembly comprising: a well for containing cooking oil; a two-part housing, including: a bottom portion; and a cover portion detachably retained on said bottom portion; a filter sub-assembly in said housing and including: a rigid foraminous cylinder sealed at one of its ends against said cover portion and at its other end against said bottom portion when said cover portion is retained on said bottom portion; and a filter paper lining the foraminous cylinder; a pump in the bottom portion of said housing and spaced horizontally from said filter sub-assembly; a motor mounted on said cover portion outside said housing and driviNgly connected to said pump; first conduit means communicating said pump with said well for conveying filtered cooking oil from the pump to the well; and second conduit means connecting said well to the interior of said foraminous cylinder through the cover portion of said housing.
Claim 3
Dependent Claim 73 words
A deep fat fryer assembly as defined in claim 1 wherein said second conduit means includes: a drain conduit connected to the lower side of said well on the opposite side thereof from the point of communication with said well of said first conduit means; and a drain cock in said second conduit means for controlling the rate of flow of cooking oil from said well to the interior of said foraminous cylinder.
Claim 4
Dependent Claim 27 words
A deep fat fryer as defined in claim 2 and further characterized as including means for gravity draining cooking oil from the bottom portion of said housing.
Claim 5
Dependent Claim 37 words
A deep fat fryer as defined in claim 2 and further characterized as including: a vacuum alleviating pipe on said cover portion over the space within said foraminous cylinder; and valve means in said vacuum alleviating pipe.
Claim 6
Dependent Claim 214 words
A cooking oil filtering and recirculating system adapted for connection to the well of a deep fat fryer comprising: a housing including: a cover portion having a protuberant cylindrical portion; a bottom portion having an open top cooperating with, and closed by, said cover portion; and manually operable means for securing said cover portion on said bottom portion; cylindrical filter means positioned in one side of said housing and having one end extending into the protuberant cylindrical portion of said cover portion and contacting said cover portion, and having a second end contacting the base portion of said housing; means on said cover portion for adjustably venting the space inside said cylindrical filter means to the atmosphere; first conduit means connectable to the well of a deep fat fryer and communicating with the space inside said cylindrical filter means for conveying cooking oil from said well to said space; a pump disposed in said housing adjacent the bottom of said bottom portion and horizontally spaced from said filter means; second conduit means connected to said pump and adapted for conveying cooking oil from said pump through said housing to said deep fat fryer well; and a motor mounted on said cover portion on the out-side of said housing and drivingly connected to said pump.
Claim 7
Dependent Claim 214 words
A cooking oil filtering and recirculating system adapted for connection to the well of a deep fat fryer comprising: a housing including: a cover portion having a protuberant cylindrical portion; a bottom portion having an open top cooperating with, and closed by, said cover portion; and manually operable means for securing said cover portion on said bottom portion; cylindrical filter means positioned in one side of said housing and having one end extending into the protuberant cylindrical portion of said cover portion and contacting said cover portion, and having a second end contacting the base portion of said housing; means on said cover portion for adjustably venting the space inside said cylindrical filter means to the atmosphere; first conduit means connectable to the well of a deep fat fryer and communicating with the space inside said cylindrical filter means for conveying cooking oil from said well to said space; a pump disposed in said housing adjacent the bottom of said bottom portion and horizontally spaced from said filter means; second conduit means connected to said pump and adapted for conveying cooking oil from said pump through said housing to said deep fat fryer well; and a motor mounted on said cover portion on the out-side of said housing and drivingly connected to said pump.
Claim 8
Dependent Claim 35 words
A cooking oil filtering and recirculating system as defined in claim 5 wherein said cylindrical filter means comprises: a foraminous, rigid cylindrical sleeve; and a filter paper lining the internal wall of said cylindrical sleeve.
Claim 9
Dependent Claim 34 words
A cooking oil filtering and recirculation system as defined in claim 6 and further characterized to include valve means on the bottom of said bottom portion for gravity draining cooking oil from said housing.
Claim 10
Dependent Claim 37 words
A cooking oil filtering and recirculating system as defined in claim 7 and further characterized as including a drive shaft interconnecting said motor and pump and extending substantially parallel to the axis of said rigid cylindrical sleeve.

References Cited (Backward Citations)

DE902305C Cited
US2578129A Cited
US3210193A Cited
US3356218A Cited
US3355026A Cited
US3447685A Cited
US3415181A Cited
US3483982A Cited
US3477361A Cited
US3573861A Cited
US3608472A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-08-22 1976-02-21 1976-08-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-08-22 1980-02-21 1980-08-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-08-22 1984-02-21 1984-08-22 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag