← Back to Patent Explorer
US3564308A Expired / Lapsed US ⏱️ 0.0 years remaining

Burn preventing foraminate material arrangement on electric motors

Assignee: Robbins and Myers Inc
•
Filing: 1968-07-30
•
Granted: 1971-02-16
•
Expires: 1988-07-30
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract Protective material for covering a heated element, such as an electric motor, or machine, or device, or the like, for protecting personnel against burns which might be encountered from engagement with the heated element. The protective material comprises a sheet of material which has relatively low thermal conductivity and which has a multiplicity of apertures therethrough and, which, for example, may be a screen or screenlike material which is positioned in covering engagement with the machine. Because the protective material has a multiplicity of apertures therethrough, the protective material does not significantly affect the dissipation of heat from the machine or device. However, if the protective material is engaged by a persons''s hand, only a very small quantity of heat is transferred from the protective material to the person who comes into contact therewith.

Inventors

  • 👤 James C Ryan

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 17:29
CPC Classifications
H; H02; H02K; H02K5/00; H02K5/04

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 116 words
In combination with an electric motor which is heated to a temperature above normal body temperature, personnel burn protective material which is in engaging covering relationship with the motor, the protective material being a material which has relatively low thermal conductivity and which has a multiplicity of apertures therethrough and which has small mass per unit of area thereof, the material thus having a small quantity of heat therein per unit area thereof, so that if a person comes into engagement with the protective material, only a small quantity of heat flows from the material to the person and additional heat does not flow readily from the electric motor through the protective material to the person.
Claim 2
Dependent Claim 116 words
In combination with an electric motor which is heated to a temperature above normal body temperature, personnel burn protective material which is in engaging covering relationship with the motor, the protective material being a material which has relatively low thermal conductivity and which has a multiplicity of apertures therethrough and which has small mass per unit of area thereof, the material thus having a small quantity of heat therein per unit area thereof, so that if a person comes into engagement with the protective material, only a small quantity of heat flows from the material to the person and additional heat does not flow readily from the electric motor through the protective material to the person.
Claim 3
Dependent Claim 34 words
The combination of claim 1 in which the protective material is a screen material which is approximately 0.013 inches in thickness and is of a mesh approximately 18 x 14 strands per square inch.
Claim 4
Dependent Claim 34 words
The combination of claim 1 in which the protective material is a screen material which is approximately 0.013 inches in thickness and is of a mesh approximately 18 x 14 strands per square inch.
Claim 5
Dependent Claim 15 words
The combination of claim 1 in which the protective material is a fibrous glass material.
Claim 6
Dependent Claim 26 words
The combination of claim 1 in which the protective material is in the form of a sleeve of screen material which engagingly encompasses the electric motor.

References Cited (Backward Citations)

US1538159A Cited
US703100A Cited
US812797A Cited
US1500696A Cited
US1857639A Cited
US1986256A Cited
US2079369A Cited
US2707620A Cited
US2812900A Cited
US3121813A Cited
US3236300A Cited
US3205467A Cited
US3225230A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-02-15 1974-08-17 1975-02-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-02-15 1978-08-17 1979-02-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-02-15 1982-08-17 1983-02-16 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag