You got your answer, but why iterate over the tr when you can go straight for the inputs? That way you can store them easier into an array and it reduce the number of CSS queries. Depends what you want to do of course, but for collecting data it is a more flexible approach.
http://jsfiddle.net/zqpgq/
var array = [];
$("tr.item input").each(function() {
array.push({
name: $(this).attr('class'),
value: $(this).val()
});
});
console.log(array);