The transfer of the possession of goods by the owner (the bailor) to another (the bailee) for a particular purpose. Examples of bailments are the hiring of goods, the loan of goods, the pledge of goods, and the delivery of goods for carriage, safe custody, or repair. Ownership of the goods remains in the bailor, who has the right to demand their return or direct their disposal at the end of the period (if any) fixed for the bailment or (if no period is fixed) at will. This right will, however, be qualified by any lien the bailee may have over the goods. Bailment exists independently of contract. But if the bailor receives payment for the bailment (a bailment for reward) there is often an express contract setting out the rights and obligations of the parties. A bailment for which the bailor receives no reward (e.g. the loan of a book to a friend) is called a gratuitous bailment.