Abstract: Methods for establishing communication between computing entities are provided. In one example, a service model illustrates communication with a web server using a service proxy to manage a communication exchange. The service model includes a dispatcher within the service proxy to process the communication exchange. The processing of the communication exchange includes defining a request, defining a container in which to enclose the request, defining a post request event to dispatch the container with the request, and defining a response container for obtaining a response to the request. The container with the request is transmitted through the web server to a service for a responding entity. The service uses a delegate registry to map the request to a delegate which obtains a response from the responding entity. The response is formatted and transmitted through the web server to the service proxy which provides the response to the requesting entity.

Abstract: Methods for establishing communication between computing entities are provided. In one example, a service model illustrates communication with a web server using a service proxy to manage a communication exchange. The service model includes a dispatcher within the service proxy to process the communication exchange. The processing of the communication exchange includes defining a request, defining a container in which to enclose the request, defining a post request event to dispatch the container with the request, and defining a response container for obtaining a response to the request. The container with the request is transmitted through the web server to a service for a responding entity. The service uses a delegate registry to map the request to a delegate which obtains a response from the responding entity. The response is formatted and transmitted through the web server to the service proxy which provides the response to the requesting entity.

Abstract: A method for transacting business electronically includes storing first information in a database management module, reading the first information in the database management module by a network server module, providing a client customized interface with the first information by the network server module, providing client information and product information to a file transfer module responsive to a client ordering a product, and transferring a product to a client by the file transfer module.

Abstract: A reciprocating plunger pump having variable pumping modes is disclosed. A pump housing having an enclosed pump chamber provided with a valved inlet and a valved outlet is provided. A first plunger having a piston end extending into the pump housing and an outer end extending outside of the housing is driven in a reciprocal motion to produce a pumping action in the pump chamber. A second plunger having an inner end extending into the pump chamber and an outer end located out of the pump chamber is also mounted for reciprocal motion. The second plunger is removably attached to the first plunger. When the two plungers are attached together, a high pressure and low volume pumping of a fluid is achieved. When the two plungers are not attached together, a lower pressure and higher volume pumping of the fluid is achieved. Preferably, both plungers are substantially cylindrically shaped and the piston end of the first plunger is greater in diameter than the inner end of the second plunger.