US Patent 7699621 Electrical card connector with contacts having preload portions

An electrical card connector comprising an insulative housing 4 and a plurality of contacts 5 which received in the insulative housing, each contact 5 includes a retention portion 51, an elastic portion 52 which extends from one end of the retention portion 51, a contact portion 53 which connects with the elastic portion 52, a preload portion 54 which extends from the end of the contact portion 53 and a soldering portion 55, wherein the contact 5 further includes a connect portion 56 which extends from the soldering portion 55 and a block portion 57 which extends from the end of the connect portion 56.