公开(公告)号：US3623334A

公开(公告)日：1971-11-30

申请号：US3623334D

申请日：1969-11-28

Applicant: GEN MOTORS CORP

Inventor： HEIDORN JOHN H

IPC: F25D21/02

CPC classification number: F25D21/025

Abstract: IN THE PREFERRED FORM, A TUBE THROUGH WHICH AIR CIRCULATES EXTENDS INTO HEAT TRANSFER RELATION WITH THE PORTION OF THE EVAPORATOR AND THE SUCTION LINE. THE ACCUMULATION OF FROST WITHIN THE TUBE IS PROPORTIONAL TO THE AMOUNT OF FROST WHICH ACCUMULATES ON THE EVAPORATOR. A THERMOSTAT BULB IS MOUNTED IN HEAT TRANSFER RELATION WITH THE OUTLET PORTION OF THE TUBE AND IS NORMALLY COOLED BY THE AIR FLOW THROUGH THE TUBE. IT OPERATES A DOUBLE THROW SNAP SWITCH FROM THE NORMAL REFRIGERATING POSITION TO DEFROST POSITION WHEN THE TUBE REACHES A PREDETERMINED HIGHER TEMPERATURE TO INITIATE A DEFROSTING OPERATION. A SECOND CONTROL RESPONSIVE TO THE DIFFERENCE IN PRESSURE IN THE INLET AND OUTLET PORTIONS OF THE AIR TUBE OPERATES A DOUBLE THROW SWITCH WHICH MAY BE CONNECTED IN PARALLEL WITH THE PREVIOUSLY MENTIONED SWITCH TO PROVIDE A SECOND DEFROST AIR CONTROL WHICH OPERATES WHEN THE PRESSURE DIFFERENTIAL INCREASES TO A PREDETERMINED AMOUNT TO OPERATE THE DOUBLE THROW SWITCH FROM NORMAL REFRIGERATION POSITION TO THE DEFROST POSITION. IN A SECOND FORM OF THE INVENTION AIR IS DRAWN THROUGH A TUBE LOCATED IN HEAT TRANSFER WITH THE EVAPORATOR BY THE VACUUM OF THE INTAKE MANIFOLD OF A GASOLINE ENGINE. WHEN FROST RESTRICTS THE AIR FLOW THROUGH THE TUBE, A FLUID MOTOR OPERATES A BUTERFLY VALVE TO RESTRICT THE FLOW OF REFRIGERANT OUT OF THE EVAPORATOR TO RAISE ITS TEMPERATURE TO EVAPORATE THE FROST ON THE EVAPORATOR AND WITHIN THE TUBE.

公开(公告)号：US2864551A

公开(公告)日：1958-12-16

申请号：US63724257

申请日：1957-01-30

Applicant: GEN MOTORS CORP

Inventor： HEIDORN JOHN H ,  BECHT RICHARD J

IPC: F04B27/08 ,  F04B27/10 ,  F04B35/04 ,  F04B49/24

CPC classification number: F04B27/0895 ,  F04B27/1036 ,  F04B35/04 ,  F04B49/24

公开(公告)号：US3624354A

公开(公告)日：1971-11-30

申请号：US3624354D

申请日：1970-10-05

Applicant: GEN MOTORS CORP

Inventor： HEIDORN JOHN H

IPC: H01H37/52 ,  H05B3/84 ,  H05B1/02

CPC classification number: H05B3/84 ,  H01H37/52 ,  H05B1/0236 ,  H05B2203/035

Abstract: In preferred form, an automobile windshield defroster utilizing dual electric resistance elements to heat air which is then directed against the windshield. A thermostatic switch initially connects the dual resistance element in parallel for maximum heat output and subsequently connects the dual resistance elements in series for a reduced heat output.

公开(公告)号：US3150503A

公开(公告)日：1964-09-29

申请号：US33018163

申请日：1963-12-12

Applicant: GEN MOTORS CORP

Inventor： HEIDORN JOHN H

IPC: F25B13/00 ,  F25B41/04

CPC classification number: F25B13/00 ,  F25B41/046

公开(公告)号：US3064447A

公开(公告)日：1962-11-20

申请号：US85312759

申请日：1959-11-16

Applicant: GEN MOTORS CORP

Inventor： HEIDORN JOHN H

IPC: F25B41/04

CPC classification number: F25B41/04

公开(公告)号：US2825499A

公开(公告)日：1958-03-04

申请号：US43076854

申请日：1954-05-19

Applicant: GEN MOTORS CORP

Inventor： LOWELL GIBSON J ,  HORNADAY JAMES R ,  HEIDORN JOHN H

IPC: F04B27/10

CPC classification number: F04B27/109

公开(公告)号：US2756487A

公开(公告)日：1956-07-31

申请号：US29163452

申请日：1952-06-04

Applicant: GEN MOTORS CORP

Inventor： HEIDORN JOHN H

IPC: B21D53/04

CPC classification number: B21D53/045 ,  Y10T29/49371 ,  Y10T29/49805 ,  Y10T29/49995

公开(公告)号：US3252294A

公开(公告)日：1966-05-24

申请号：US33007663

申请日：1963-12-12

Applicant: GEN MOTORS CORP

Inventor： HEIDORN JOHN H

IPC: F25B41/06

CPC classification number: F25B41/062 ,  F25B2341/0683

公开(公告)号：US3119559A

公开(公告)日：1964-01-28

申请号：US21801562

申请日：1962-08-20

Applicant: GEN MOTORS CORP

Inventor： HEIDORN JOHN H

IPC: F16K31/68 ,  F25B41/06

CPC classification number: F25B41/062 ,  F25B2341/0683 ,  F25B2600/21

公开(公告)号：US3092307A

公开(公告)日：1963-06-04

申请号：US82734659

申请日：1959-07-15

Applicant: GEN MOTORS CORP

Inventor： HEIDORN JOHN H

IPC: F04B27/08 ,  F16D27/06

CPC classification number: F16D27/06 ,  F04B27/0895 ,  F16D2027/007