US Patent 8724330 Variable latch to position a sub-chassis within a chassis

An apparatus comprises a chassis securing a midplane at a known distance from the first end of the chassis, wherein a first electronic device is securable within the first end of the chassis in connection with a midplane connector on a first surface of the midplane. A sub-chassis is receivable within the second end of the chassis with a proximal end of the sub-chassis engaging a second surface of the midplane. A distal end of the sub-chassis has a sub-chassis latch that secures the sub-chassis in the second end of the chassis with the proximal end engaged against the second surface of the midplane. A second electronic device is securable within the sub-chassis with a second device connector coupled to a midplane connector on the second surface of the midplane and a second device latch secured to a sub-chassis slot adjacent the distal end of the sub-chassis.