Appeal No. 96-2454 Application No. 08/052,737 524 F.2d 1222, 1226, 187 USPQ 664, 667 (CCPA 1975). We are of the view that such is the case here, for in addition to the inner elastic element specifically mentioned in the text, from our perspective other arrangements, such as elastic means external of the telescopic tubes, would have been apparent to the artisan. The second issue raised by the examiner is that there is no support in the specification for the requirement in claim 1 that each joint splint be coupled at its lower end to the lower leg part “via a lower pivotal point.” While we agree with the examiner that the written description is lacking an explicit statement that this is the case, we are persuaded by the appellant’s arguments that such would have been apparent to one of ordinary skill in the art. We arrive at this conclusion by applying the principles of geometry. Given that the point of rotation of the lower leg about the wearer’s knee is beneath and forward of the point of rotation of the joint splints, in order for the joint splints to move rearwardly behind the knee when the knee is bent they must telescopically shorten and must pivot with respect to both of the parts to which they are attached. It is impossible to have such knee movement if the lower attachment point does not allow the rigid joint splints to pivot with respect to the lower leg part, and one of ordinary skill would 4Page: Previous 1 2 3 4 5 6 NextLast modified: November 3, 2007