Tire pressure indicating device

Claim 1

A PRESSURE SENSING DEVICE, COMPRISING A SWITCHING DEVICE; SAID SWITCHING DEVICE COMPRISING A PRESSURE SENSING STRUCTURE DISPLACEABLE TO A NUMBER OF PRESELECTED POSITIONS IN RESPONSE TO VARIATIONS IN THE PRESSURE IN AN OBJECT; AN ELECTRICAL CONTACT ACTUATING PORTION CONNECTED TO SAID STRUCTURE; A BRUSHING ELECTRICAL CONTACT; AN ELECTRICAL CONTACT ELEMENT ADAPTED FOR BRUSHING ENGAGEMENT WITH SAID BRUSHING CONTACT; SAID ELEMENT BEING COMPRISED OF A FIRST AND A SECOND SEGMENT; EACH OF SAID SEGMENTS BEING ELECTRICALLY INSULATED FROM ONE ANOTHER; MEANS FOR MOVING SAID ELEMENT WITH RESPECT TO SAID BRUSHING CONTACT; SAID BRUSHING ELECTRICAL CONTACT BEING IN BRUSHING ENGAGEMENT WITH SAID ELEMENT, WHEREBY MOVEMENT OF SAID ELEMENT BRINGS SAID BRUSHING CONTACT SEQUENTIALLY INTO ENGAGEMENT WITH EACH OF SAID SEGMENTS; A FIRST AND A SECOND ELECTRICAL CONTACT, WHICH ARE, RESPECTIVELY, ELECTRICALLY CONNECTED WITH SAID FIRST AND SECOND SEGMENTS; SAID ACTUATING PORTION HAVING A GROUNDED ELECTRICAL CONTACT MEANS; SAID GROUNDED CONTACT MEANS BEING POSITIONED AND ADAPTED TO ELECTRICALLY ENGAGE, SELECTIVELY, ONE OF SAID FIRST AND SECOND CONTACTS AND BOTH OF THEM, DEPENDING UPON THE POSITION OF SAID PRESSURE SENSING STRUCTURE; SAID BRUSHING ELECTRICAL CONTACT BEING CONNECTABLE TO AN INDICATOR AND A POWER SUPPLY.