Abstract: According to a first aspect, it is provided a method for providing access to a lock for provision of a service. The method comprises the steps of: receiving a request for access to the lock; sending a consumer request to a service consumer device, asking whether to grant access to the lock; receiving a positive consumer response from the service consumer device; determining validity time for a grant token; obtaining a grant token for the service provider, the grant token having the determined validity time; providing the grant token to the service provider; deleting the grant token in the access coordination server; receiving an agent request for access to the lock for a specific service provider agent device, the agent request comprising the grant token; obtaining a credential for the service provider agent device; and providing the credential to the service provider agent device.

Abstract: According to a first aspect, it is provided a method for providing access to a lock for provision of a service. The method comprises the steps of: receiving a request for access to the lock; sending a consumer request to a service consumer device, asking whether to grant access to the lock; receiving a positive consumer response from the service consumer device; determining validity time for a grant token; obtaining a grant token for the service provider, the grant token having the determined validity time; providing the grant token to the service provider; deleting the grant token in the access coordination server; receiving an agent request for access to the lock for a specific service provider agent device, the agent request comprising the grant token; obtaining a credential for the service provider agent device; and providing the credential to the service provider agent device.

Abstract: It is provided a method for providing access to a physical space for provision of a service. The method is performed in an access coordinator and comprises the steps of: receiving an approval signal indicating that the service consumer allows a service provider agent of a service provider to open the lock; deriving service provider access data being necessary for the service provider agent to open the lock; transmitting the service provider access data to a service provider server, for storage by the service provider server; deleting the service provider access data from the access coordinator; receiving the service provider access data and a request to assign a service provider agent to open the lock; generating service agent access data; and transmitting the service agent access data to a service provider agent device associated with the service provider agent.

Abstract: It is provided a method for requesting remote unlocking of an electronic lock controlling access to a physical space. The method is performed in a user device and comprises steps of: sending a control message to an access controller, the control message comprising user authentication information, the control message causing the access controller to trigger the electronic lock to emit an alert signal; and sending an unlock message to the access controller comprising the user authentication information, in order to unlock the electronic lock.

Abstract: It is provided a method for controlling access to a physical space. The method is performed in an access control device and comprises the steps of: communicating with an electronic key to obtain an identity of the electronic key; obtaining a plurality of delegations; determining, from one of the delegations, that there is an auxiliary condition, wherein the auxiliary condition is that access is approved for the electronic key by an auxiliary party, authenticated by a digital signature by the auxiliary party; and granting access to the physical space when the plurality of delegations comprises a sequence of delegations covering a delegation path from the access control device to the electronic key such that, in the sequence of delegations, the delegator of the first delegation is the access control device, the receiver of the last delegation is the electronic key, and the auxiliary condition is fulfilled.

Abstract: It is provided a method for providing access to a physical space secured by a lock for provision of a service. The method comprises the steps of: receiving an approval signal from a service consumer device of the service consumer, the approval signal indicating that the service consumer allows a service provider agent of a service provider to open the lock; receiving, from the service provider device, a request to assign a service provider agent to open the lock; communicating with the service provider device to use a private key of a cryptographic key pair accessible to the service provider device, the private key being used to generate service agent access data that is specific for the service provider agent, to allow the service provider agent to open the lock; and transmitting the service agent access data to a service provider agent device associated with the service provider agent.

Abstract: It is presented a method for providing access to a lock for provision of a service. The method comprises the steps of: receiving a request for access to the lock, the request being based on the service consumer ordering a service requiring access to a physical space, the request comprising a first public key associated with a co-ordinator and a second public key associated with a service provider agent; presenting a first consumer query to the service consumer; receiving a first positive consumer response indicating that the service consumer allows the service provider agent to access the physical space; and delegating access to the lock to the co-ordinator, which comprises encrypting at least part of a delegation using the first public key, encrypting at least part of the delegation using the second public key, and electronically signing the delegation, enabling further delegation to the service provider agent.

Abstract: It is provided a method for requesting remote unlocking of an electronic lock controlling access to a physical space. The method is performed in a user device and comprises steps of: sending a control message to an access controller, the control message comprising user authentication information, the control message causing the access controller to trigger the electronic lock to emit an alert signal; and sending an unlock message to the access controller comprising the user authentication information, in order to unlock the electronic lock.

Abstract: It is presented a method for providing access to a lock for provision of a service. The method comprises the steps of: receiving a request for access to the lock, the request being based on the service consumer ordering a service requiring access to a physical space, the request comprising a first public key associated with a co-ordinator and a second public key associated with a service provider agent; presenting a first consumer query to the service consumer; receiving a first positive consumer response indicating that the service consumer allows the service provider agent to access the physical space; and delegating access to the lock to the co-ordinator, which comprises encrypting at least part of a delegation using the first public key, encrypting at least part of the delegation using the second public key, and electronically signing the delegation, enabling further delegation to the service provider agent.

Abstract: It is provided a method for providing access to a physical space secured by a lock for provision of a service. The method comprises the steps of: receiving an approval signal from a service consumer device of the service consumer, the approval signal indicating that the service consumer allows a service provider agent of a service provider to open the lock; receiving, from the service provider device, a request to assign a service provider agent to open the lock; communicating with the service provider device to use a private key of a cryptographic key pair accessible to the service provider device, the private key being used to generate service agent access data that is specific for the service provider agent, to allow the service provider agent to open the lock; and transmitting the service agent access data to a service provider agent device associated with the service provider agent.

Abstract: It is provided a method for managing administration privileges of an electronic lock. The method is performed in the electronic lock and comprises the steps of: receiving a first signal from a first mobile device, the first signal comprising a first code entered by a user to the first mobile device, and an identifier of the first mobile device; determining that the first mobile device has administration privileges to the electronic lock; storing the first code in memory of the electronic lock; receiving a second signal from a second mobile device, the second signal comprising a second code entered by a user to the second mobile device, and an identifier of the second mobile device; and granting administration privileges to the lock for the second mobile device only when the second code matches the first code.

Abstract: It is provided a method for providing access to a physical space for provision of a service. The method is performed in an access coordinator and comprises the steps of: receiving an approval signal indicating that the service consumer allows a service provider agent of a service provider to open the lock; deriving service provider access data being necessary for the service provider agent to open the lock; transmitting the service provider access data to a service provider server, for storage by the service provider server; deleting the service provider access data from the access coordinator; receiving the service provider access data and a request to assign a service provider agent to open the lock; generating service agent access data; and transmitting the service agent access data to a service provider agent device associated with the service provider agent.

Abstract: It is presented a method for providing access to a lock for provision of a service. The method comprises the steps of: receiving a request for access to the lock, the request being based on the service consumer ordering a service requiring access to a physical space, the request comprising a first public key associated with a co-ordinator and a second public key associated with a service provider agent; presenting a first consumer query to the service consumer; receiving a first positive consumer response indicating that the service consumer allows the service provider agent to access the physical space; and delegating access to the lock to the co-ordinator, which comprises encrypting at least part of a delegation using the first public key, encrypting at least part of the delegation using the second public key, and electronically signing the delegation, enabling further delegation to the service provider agent.

Abstract: It is provided a method for controlling access to a physical space. The method is performed in an access control device and comprises the steps of: communicating with an electronic key to obtain an identity of the electronic key; obtaining a plurality of delegations; determining, from one of the delegations, that there is an auxiliary condition, wherein the auxiliary condition is that access is approved for the electronic key by an auxiliary party, authenticated by a digital signature by the auxiliary party; and granting access to the physical space when the plurality of delegations comprises a sequence of delegations covering a delegation path from the access control device to the electronic key such that, in the sequence of delegations, the delegator of the first delegation is the access control device, the receiver of the last delegation is the electronic key, and the auxiliary condition is fulfilled.

Abstract: The invention relates to an arrangement (200) for anaesthetising a living creature (V) and for maintaining said creature in an anaesthetised state, by administering thereto an infused volume of anaesthesia inducing pharmaceutical (22) in liquid phase per unit of time, with the aid of one or more lung ventilator units (A) and one or more infusion units (B). Chosen parts of the lung ventilator unit, with the exception of external insufflation hose, expiration valve, measuring probe and a number of hoses (12), and selected parts of the infusion unit (B), with the exception of cannula (5B) and hose (4B) are mutually combined to form a single equipment unit (201). Some of the parts of the equipment unit are mutually coordinated with respect to communication via a computer unit (600) included in the equipment unit, and the computer unit is adapted to monitor unit related criteria and creature related criteria.

Abstract: The present invention relates to a mixing valve that can be included in pulmonary respiration equipment and with which oxygen (2) and air (3) can be mixed in adapted proportions. The mixing valve (1) comprises a valve housing (40) that has an internal cavity (46), which forms two mutually opposing valve seats (10d, 20d). The cavity (46) encloses an element (30) on which two valve bodies (10c, 20c) are formed. The cavity wall and the element have respective screw threads (46c? and 30c?) which enable two valve means (10, 20) to be actuated so as to open one of said valve means and close the other to passage of media therethrough. The mixing valve is of simple construction and precise in operation and can be constructed with small outer dimensions.

Abstract: The invention relates to an arrangement in ventilatory treatment of the lungs of a living creature (2) under anaesthesia, comprising valve equipment (4) devised for carrying an insufflation gas and/or an insufflation gas mixture from a unit for pulmonary ventilation (3) into the lungs and airways (2a) of the living creature and permitting expiration of gas and/or gas mixture held in the airways and gas measurement equipment (6) in the sensor unit (61, 62, 63). The said valve equipment (4) and a combination of the said sensor units (61, 62, 63) are arrayed close together. They are connected to an end section of a bundle of hoses (30) from the unit for pulmonary ventilation, and the said sensor units are located closer to the living creature (2) than the said valve equipment (4).

Abstract: A combustion system for engines having at least one cylinder (10). The system may e.g. consist of an exhaust duct, an intake duct (20a), a cylinder chamber (30), a fuel injector for injecting fuel into the cylinder chamber (30), a piston (40) performing a reciprocating motion in the cylinder chamber (30), and a valve (70) for intake and one for exhaust. The intake duct (20a) is connected to the cylinder chamber (30) and said intake valve (70) is operative to open and close, respectively, the connection between the intake duct (20a) and the cylinder chamber (30). The crown (60) of the piston (40) is provided with a cavity (50), shaped so as to enhance the generation of tumbling inside the cylinder chamber (30) during the intake stroke and to contribute to the breakdown during the compression stroke inside the cylinder chamber (30).