| Patent application number | Description | Published |
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| 20090276657 | MANAGING CLUSTER SPLIT-BRAIN IN DATACENTER SERVICE SITE FAILOVER - A central controlling service for datacenter activation/deactivation control in a cluster deployment to assist in preventing a split-brain scenario. The central controlling service provides a central point of control in the datacenter for application servers to periodically query as to whether to go offline, online, or normal. Redundancy of the central service facilitates detection of datacenter failure by the redundant services interacting to resolve the state of control information. This control information is then used to answer the server queries. On startup from a datacenter failure, a single instance of the central service queries other redundant instance(s) to determine if the single instance is starting up from a datacenter-wide failure or from operations other than total datacenter failure. If the failure is datacenter-wide, a central service protocol assists in resolving to the single service keeping the associated datacenter servers offline; otherwise, the server queries are answered to go online. | 11-05-2009 |
| 20090327519 | ADDING INDIVIDUAL DATABASE FAILOVER/SWITCHOVER TO AN EXISTING STORAGE COMPONENT WITH LIMITED IMPACT - High availability architecture that employs a mid-tier proxy server to route client communications to active data store instances in response to failover and switchover. The proxy server includes an active manager client that interfaces to an active manager in each of the backend servers. State information and configuration information are maintained separately and according to semantics consistent with needs of corresponding data, the configuration information changing less frequently and more available, the state information changing more frequently and less available. The active manager indicates to the proxy server which of the data storage instances is the currently the active instance. In the event that the currently active instance is inactive, the proxy server selects a different backend server that currently hosts the active data store instance. Client communications are then routed to the different backend server with minimal or no interruption to the client. | 12-31-2009 |
| 20090327805 | MINIMIZING DATA LOSS IN ASYNCHRONOUS REPLICATION SOLUTION USING DISTRIBUTED REDUNDANCY - Architecture that reduces data loss resulting from failover in an asynchronous log shipping deployment, but leveraging mid-tier and frontend servers to fill in lost data. In an asynchronous log shipping operation, a replication component asynchronously replicates messaging data to a backend server in accordance with one or more replication operations, which can be updates to databases on the backend server. These databases can include messaging data, such as email address books, mailboxes, etc. A history component maintains a history of replication operations on a frontend server. In the event of a lossy failover, a replay component is used for replaying the replication operations from the history to the backend server. | 12-31-2009 |
| Patent application number | Description | Published |
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| 20100129770 | Dental Instrumentation Unit - An instrumentation delivery unit which supports hand-held dental instruments. In one example first and second housing members form a sealed chamber. When the members are separated, access is permitted to the interior of the chamber, e.g., for maintenance purposes. A first portal suitable for connection to a vacuum line provides a partial vacuum in the chamber, and second portals provide connection via second vacuum lines between the chamber and dental devices to operate the devices. The housing includes hand piece holders each of an initial diametric size for receiving hand pieces up to a maximum diametric dimension, with one of the hand piece holders formed along two adjoining ones of the housing members. The adjoining housing members secure inserts between one another to provide a second diametric size smaller than the initial diametric size to thereby selectably accommodate hand pieces having a smaller diametric dimensions. | 05-27-2010 |
| 20100159415 | DENTAL DELIVERY SYSTEM - Disclosed herein is a dental rear delivery unit for providing an increased range of positioning of a doctor's hand piece delivery head and an assistant's instrument work delivery head at a head end of a dental chair. | 06-24-2010 |
| 20100190131 | REAR DELIVERY UNIT WITH INFRASTRUCTURE IN CABINET DRAWER - Disclosed is a dental utility system for managing dental utilities, including a dental utility housing, a dental delivery assembly base fixed to the front side of the dental utility housing, and a dental delivery assembly main arm horizontally pivotably connected to the dental delivery assembly base and which permits vertical movement of a dental delivery assembly main arm distal end. The dental delivery assembly base and a dental delivery assembly base cover define a dental utility housing utility pathway that directs dental utilities from the dental utility platform to the dental delivery assembly main arm. Also included are a dental utility platform, and a dental utility platform extendable mount. The dental utility platform extendable mount permits the dental utility platform to be positioned anywhere along a continuous range of positions. | 07-29-2010 |
| 20100203465 | Led-Based Dental Exam Lamp - Disclosed herein is an improved dental operatory lamp having an LED light source that directs light to a reflector that in turn reflects the light to illuminate a treatment area. In one embodiment, the lamp is adapted for efficient transfer of heat from the light source and into the environment. In another embodiment, the lamp is adapted to generate a predetermined pattern of light optimal for the treatment area. In other embodiments, the lamp includes structural features that enable the lamp to maintain optimum light intensity and/or temperature. Also, disclosed herein are unique reflector embodiments that intentionally provide a generally smooth surface, without facets, that reflect light at all visible and infrared wavelengths. | 08-12-2010 |
| 20100227292 | Dental Chair Having An Accessory Unit With An Adjustable Support Device - Disclosed is a dental chair and accessory unit that includes an adjustable support device that can be quickly and easily configured for either left hand or right hand operation and requires a minimum of valuable office floor space without resorting to expensive and time consuming disassembly and reassembly of the support device while providing a secure and stable support for the DAU. Also disclosed is a DAU with an adjustable support device as described above, configured for retrofit to an existing dental chair. | 09-09-2010 |
