Safety retaining belt for shopping carts

Claim 1

A RETRACTABLE SEAT BELT ASSEMBLY FOR THE SEAT OF A SHOPPING CART HAVING A SEAT MEMBER AND A BACK REST COMPRISING: A SUBSTANTIALLY CYLINDRICAL HOUSING AFFIXED WITH ITS AXIS SUBSTANTIALLY VERTICAL TO ONE SIDE OF THE BACK REST; A BRACKT DEPENDENT FROM SAID HOUSING AND PROVIDED WITH CLAMPING MEANS FOR ATTACHING TO A STRUCTURAL MEMBER OF SAID SHOPPING CART; A DRUM MEMBER IN SAID HOUSING ADAPTED TO JOURNAL IN SAID HOUSING, SAID DRUM MEMBER BEING DISPOSED IN A COMPARTMENT IN SAID HOUSING; A FLAT FLEXIBLE BELT MEMBER HAVING ONE END ATTACHED TO THE PERIPHERY OF SAID DRUM MEMBER; A SLOT-LIKE CHANNEL IN SAID HOUSING AFFORDING PASSAGE FOR THE BELT MEMBER TO THE OUTSIDE OF SAID HOUSING; A SNAP BUCKLE FIXEDLY ATTACHED TO THE OTHER END OF SAID BELT MEMBER AND ADAPTED FOR ENGAGEMENT WITH A STRUCTURAL MEMBER OF SAID SHOPPING CART; AND A SPIRAL SPRING IN ANOTHER COMPARTMENT IN SAID HOUSING AND HAVING ONE END ATTACHED TO SAID HOUSING AND ANOTHER END ATTACHED TANGENTIALLY TO SAID DRUM MEMBER SO AS TO ROTATIONALLY URGE SAID DRUM MEMBER IN THE DIRECTION THAT RETRACTS SAID BELT MEMBER BY WINDING AROUND THE PERIPHERY OF SAID DRUM MEMBER.