Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
160 words
A lock comprising: a lock bolt, a handle, a bolt actuator (3) which effects movement of the lock bolt, an actuator operating member (8) and a lock control system (9-19), the actuator operating member (8) operating the bolt actuator (3) upon movement of the handle and under the control of the lock control system (9-19). the lock control system (9-19) including a solenoid (15) and a solenoid energization circuit (17-19), the solenoid energization circuit (17-19) including a switch circuit (18) which operates to energize the solenoid (15) upon verification of an input code with a present code, characterised by the lock control system (9-19) having a control member (11) which is held against movement by the solenoid (15) when energised, whereby the control member (11) permits the actuator operating member (8) to operate the bolt actuator (3) to move the lock bolt with the control member (8) disabling the actuator operating member (8) when the solenoid (15) is not energised.
Claim 2
Dependent Claim
160 words
A lock comprising: a lock bolt, a handle, a bolt actuator (3) which effects movement of the lock bolt, an actuator operating member (8) and a lock control system (9-19), the actuator operating member (8) operating the bolt actuator (3) upon movement of the handle and under the control of the lock control system (9-19). the lock control system (9-19) including a solenoid (15) and a solenoid energization circuit (17-19), the solenoid energization circuit (17-19) including a switch circuit (18) which operates to energize the solenoid (15) upon verification of an input code with a present code, characterised by the lock control system (9-19) having a control member (11) which is held against movement by the solenoid (15) when energised, whereby the control member (11) permits the actuator operating member (8) to operate the bolt actuator (3) to move the lock bolt with the control member (8) disabling the actuator operating member (8) when the solenoid (15) is not energised.
Claim 3
Dependent Claim
51 words
A lock as claimed in claim 1, characterised in that said energization circuit (17-19) includes a switch (19) in series with said switch circuit (18). said switch (19) being closed when the handle has been moved through a preset distance and being opened when said handle returns to its rest position.
Claim 4
Dependent Claim
54 words
A lock as claimed in claim 1 or 2, characterised in that a first spring (13) acts between the solenoid (15) and the control member (11) and a second spring (7) of greater power than the first spring (13) acts against operation of the bolt actuation member (3) by the actuator operating member (8).
Claim 5
Dependent Claim
30 words
A lock as claimed in any preceding claim, characterised in that the actuator operating member (8) is located on a carrier (4) which is reciprocated upon movement of the handle.
Claim 6
Dependent Claim
52 words
A lock as claimed in claim 4, characterised in that the actuator operating member (8) is a lever pivoted at one end to the carrier (4) and having the other end thereof urged away from the carrier (4) by a spring (10) to a position enabling operation of the bolt actuator (3).
Claim 7
Dependent Claim
62 words
6 . A lock as claimed in claim 5, characterised in that prior to movement of the carrier (4) by the handle the control member (11) holds the actuator operating member (8) against said spring (10) in a position which if maintained upon movement of the carriage (4) does not enable the actuator operating member (8) to operate the bolt actuator (3).