1. A cylinder head cover for an internal combustion engine, comprising:
a seal;
a cover sealing surface for the seal that is configured to seal a level cylinder head sealing surface of a cylinder head housing; and
a curved bearing cap sealing surface of a common frontal bearing cap in relation to frontally arranged camshaft bearings,
wherein the curved bearing cap sealing surface of the common frontal bearing cap has an external contour with a middle part above the cover sealing surface and having two transition areas that slope down diagonally to the cover sealing surface and are skewed in relation to the middle part, wherein the two transition areas are skewed in relation to the middle part in such a manner that transition edges of a curved bearing cap to the cover sealing surface are arranged at angles to axes of the frontally arranged camshaft bearings, and the cover sealing surface is configured accordingly.
2. The cylinder head cover according to claim 1, wherein the middle part of the curved bearing cap sealing surface is level and substantially plane-parallel to the level cylinder head sealing surface.
3. The cylinder head cover according to claim 1, wherein the cylinder head cover comprise a single central adapter sleeve that is configured to adapt the cylinder head cover and an outer contour of a curved bearing cap in cooperation with the single central adapter sleeve, which forms a centered fitted seat of the cylinder head cover on the curved bearing cap.
4. The cylinder head cover according to claim 1, wherein the middle part of the curved bearing cap sealing surface, which is between the frontally arranged camshaft bearings, is sunken toward the front side of the cylinder head housing.
5. The cylinder head cover according to claim 1, wherein the cylinder head cover has a correspondingly bulged area of the cover sealing surface in a middle sunken part of the curved bearing cap sealing surface of the cylinder head housing.
6. The cylinder head cover according to claim 1, wherein control-drive-side ends of camshafts protrude out of the common frontal bearing cap between the cylinder head cover and the cylinder head housing.
7. The cylinder head cover according to claim 5, wherein the cylinder head cover is configured to cover an access to camshafts installed on the cylinder head housing, and the camshafts are installed from above on the cylinder head housing within the cylinder head cover having semi-cylindrical bearing caps.
8. The cylinder head cover according to claim 1, wherein the cylinder head housing is a component comprised of an aluminum alloy.
9. The cylinder head cover according to claim 1, wherein the cylinder head cover is a component formed of an injection plastic molding.
10. The cylinder head cover according to claim 1, wherein the cylinder head cover is a component formed of a fiber-reinforced plastic.
11. The cylinder head cover according to claim 1, wherein an elastomeric material is arranged as the seal between the cover sealing surface of the cylinder head cover, the cylinder head housing, and the common frontal bearing cap.
12. The cylinder head cover according to claim 1, further comprising a guide groove for a rubber-elastic ring-shaped sealing band in the cover sealing surface of the cylinder head cover.
13. The cylinder head cover according to claim 1, wherein the two transition areas are tilted forward relative to the middle part.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method for facilitating a wireless transaction, comprising:
receiving, at a transaction system and at least in part over a wireless communication link, a transaction request for a user-selected wireless transaction, the transaction request associated with a wireless transaction comprising an authorization with respect to a product or service, and a fulfillment event associated with the authorization, the fulfillment event occurring at a fulfillment location;
in response to the received user-selected transaction request, determining whether the authorization has been obtained;
if the authorization has been obtained, communicating an transaction code from the transaction system to a wireless communication device, the transaction code that, at a first point in time, is capable of being received from the wireless communication device at the fulfillment location over a short-range radio link to partially complete the wireless transaction; and
at a second point in time and while the wireless transaction remains only partially complete, completing the wireless transaction at the fulfillment location by receiving a transaction code from the wireless communication device over the short-range radio link.
2. The method as described in claim 1 wherein the short-range radio link is a short-range wireless radio link.
3. The method as described in claim 2 wherein the short-range wireless radio link is Bluetooth.
4. The method as described in claim 1 further including authenticating a user of the wireless communication device prior to seeking the authorization for the user-selected transaction request.
5. The method of claim 1 including the further step of reducing an available inventory associated with the product or service upon receiving and verifying the transaction code.
6. The method of claim 1 wherein the transaction code communicated from the transaction system is the same transaction code received from the wireless communication device.
7. The method of claim 1 wherein the transaction code communicated from the transaction system differs from the transaction code received from the wireless communication device.
8. A system for facilitating a wireless transaction using a wireless communication device that receives and displays one or more transaction codes, comprising:
a first subsystem:
receiving, at least in part over a wireless communication link, a wireless transaction request from a transaction requester, the wireless transaction request associated with a wireless transaction that begins with a purchase action with respect to a product or service, and that concludes with a fulfillment action associated with the purchase action, the fulfillment action including personal bodily entry into or through a physical structure using the wireless communication device;
verifying an identity associated with the transaction requester;
approving the purchase action with respect to the product or service; and
communicating a transaction code to the wireless communication device; and
a second subsystem coupled to the first subsystem:
at a first time, receiving the transaction code from the wireless communication device to permit personal bodily entry into or through a physical structure to partially complete the wireless transaction; and
at a second time distinct from the first time and while the wireless transaction remains only partially complete, receiving the transaction code from wireless communication device to complete the wireless transaction and authorize personal bodily entry or through the physical structure;
wherein the transaction code is received from the wireless communication device at one of the first and second locations over a short-range radio link.
9. The system as described in claim 8 wherein the short-range radio link is a short-range wireless radio link.
10. The system as described in claim 9 wherein the short-range wireless radio link is Bluetooth.
11. A method for facilitating a wireless transaction, comprising:
upon authenticating a user and authorizing a wireless transaction, communicating a transaction code from a transaction system to the user’s wireless communication device;
at a first point in time, receiving a transaction code from the wireless communication device over a short-range radio link to partially complete the wireless transaction; and
at a second point in time, distinct from the first point in time, and while the wireless transaction remains only partially complete, completing the wireless transaction by receiving a transaction code from the wireless communication device over the short-range radio link.