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US3866472A Expired / Lapsed US ⏱️ 0.0 years remaining

Probe assembly

Assignee: Food Automation Service Techniques Inc
•
Filing: 1973-06-15
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Granted: 1975-02-18
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Expires: 1993-06-15
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Abstract

Abstract A probe assembly for use in deep fat frying of French fries, fish, chicken and the like, wherein the length of cooking time is calculated by a timing computer responsive to the temperature of a predetermined portion of the cooking medium. The probe is formed as a deformable closed-end sheath adapted to be bent to a predetermined shape to conform to the configuration of a fryer and to retain said shape for repeatably repositioning the probe in the same portion of the cooking medium. The sheath is formed of a smooth oil impervious metal and positions a temperature sensing element, such as a thermistor, in a resilient embedding compound inside the sheath adjacent its closed end. Flexible temperature resistant electrical leads within the sheath extend from the temperature sensing element through a high temperature resistant portion of the sheath to the opposite end of the sheath where a fastener means such as a socket, is mounted for fixedly but removably securing said sheath to the timing computer and for electrically interconnecting the electrical leads with the computer. The probe construction solves installation and cleaning problems and enables the closed end of the sheath, containing the temperature sensitive element, to be repeatably fixed in said predetermined portion of the cooking medium, thereby supplying uniform temperature data input to the computer.

Inventors

  • 👤 Allan E Witt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 11:43
CPC Classifications
G; G01; G01K; G01K1/00; G01K1/14; A; A47; A47J; A47J37/00; A47J37/12; A47J37/1266

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 274 words
A probe assembly for use in a deep fat fryer wherein the length of cooking time is to be calculated by a timing computer responsive to the temperature in a predetermined location in the cooking medium, said probe assembly including a first portion arranged to be attached to the fryeR and to be partly immersed in the cooking medium, comprising a deformable closed end sleeve adapted to be bent to a predetermined shape to conform to the contours of the fryer and to thereafter retain said shape, said sleeve being formed of a smooth-surfaced metal impervious to said cooking medium, a temperature sensing element fixedly positioned within said sleeve at said closed end, flexible temperature-resistant leads within said sleeve leading from said temperature sensing element to the opposite end of said sleeve, and means for removably attaching said sleeve to the fryer, and a second portion arranged to be attached to the timing computer and being flexible and heat-resistant, comprising a flexible shell sealingly connected to said opposite end of the sleeve, said shell being formed of a smooth-surfaced metal impervious to said cooking medium, flexible temperature resistant leads within said shell joining with the leads in said sleeve, and means at the end of said second portion for fixedly but removably securing said second portion to said timing computer and for interconnecting said electrical leads with said computer, whereby the location of the fixed end of said sleeve may be accurately and repeatedly positioned in said predetermined location in said cooking medium, thereby providing a uniform temperature data input to said computer despite repeated removal of said sleeve from the fryer for cleaning.
Claim 2
Dependent Claim 274 words
A probe assembly for use in a deep fat fryer wherein the length of cooking time is to be calculated by a timing computer responsive to the temperature in a predetermined location in the cooking medium, said probe assembly including a first portion arranged to be attached to the fryeR and to be partly immersed in the cooking medium, comprising a deformable closed end sleeve adapted to be bent to a predetermined shape to conform to the contours of the fryer and to thereafter retain said shape, said sleeve being formed of a smooth-surfaced metal impervious to said cooking medium, a temperature sensing element fixedly positioned within said sleeve at said closed end, flexible temperature-resistant leads within said sleeve leading from said temperature sensing element to the opposite end of said sleeve, and means for removably attaching said sleeve to the fryer, and a second portion arranged to be attached to the timing computer and being flexible and heat-resistant, comprising a flexible shell sealingly connected to said opposite end of the sleeve, said shell being formed of a smooth-surfaced metal impervious to said cooking medium, flexible temperature resistant leads within said shell joining with the leads in said sleeve, and means at the end of said second portion for fixedly but removably securing said second portion to said timing computer and for interconnecting said electrical leads with said computer, whereby the location of the fixed end of said sleeve may be accurately and repeatedly positioned in said predetermined location in said cooking medium, thereby providing a uniform temperature data input to said computer despite repeated removal of said sleeve from the fryer for cleaning.
Claim 3
Dependent Claim 55 words
A probe assembly for use in a deep fat fryer as claimed in claim 1 wherein said electrical leads within said sleeve have an insulating coating, are freely carried within the sleeve and have a length greater than the length of said sleeve to accommodate bending of the sleeve without imposing strain upon the leads.
Claim 4
Dependent Claim 35 words
A probe assembly for use in a deep fat fryer as claimed in claim 2 wherein said temperature sensing element is fixedly positioned within said sleeve at said closed end in a resilient embedding compound.
Claim 5
Dependent Claim 37 words
A probe assembly for use in a deep fat fryer as claimed in claim 1 wherein at said closed end said sleeve has a portion of reduced wall thickness in which said temperature sensing element is mounted.
Claim 6
Dependent Claim 38 words
A probe assembly for use in a deep fat fryer as claimed in claim 1 wherein said electrical leads carried within said flexible shell are bare and are surrounded therein with a finely divided temperature resistant insulating material.
Claim 7
Dependent Claim 31 words
A probe assembly for use in a deep fat fryer as claimed in claim 1 wherein said sleeve portion is bent to conform to the contours of the deep fat fryer.

References Cited (Backward Citations)

US2838935A Cited
US2938385A Cited
US3213778A Cited
US3241370A Cited
US3326692A Cited
US3678751A Cited
US3815113A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-02-17 1978-08-19 1979-02-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-02-17 1982-08-19 1983-02-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-02-17 1986-08-19 1987-02-18 $7700.00 Window Closed / Lapsed

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