Latch arrangement
First Claim
Patent Images
1. A latch arrangement comprising:
- a latch operable to releasably retain a striker in use;
a manually actuable element;
a release mechanism capable of being moved in response to movement of the manually actuable element from a latched position to an unlatched position wherein the release mechanism unlatches the latch; and
a power control system having a non-powered condition and a powered condition, wherein unlatching of the latch is prevented in the powered condition, wherein the power control system has a first blocking element arranged for preventing movement of the release mechanism to the unlatched position when the power control system is in the powered condition and a second blocking element which is arranged for selectively preventing movement of the release mechanism to the unlatched position when the power control system is in the non-powered condition.
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Accused Products
Abstract
A latch arrangement includes a lever movable in response to movement of a door lever. A controller is configured for selectively preventing movement of the lever. The controller includes a mono-stable blocking element in the form of a bi-metallic strip which can be operated such that a distal end acts to block movement of the lever. The controller also includes a bi-stable blocking element having a nib that can be moved to an extended position to block movement of the lever. Both blocking elements can be operated at the same time. When either of the blocking elements are arranged in the path of the release lever, unlatching of the door is prevented.
15 Citations
11 Claims
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1. A latch arrangement comprising:
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a latch operable to releasably retain a striker in use;
a manually actuable element;
a release mechanism capable of being moved in response to movement of the manually actuable element from a latched position to an unlatched position wherein the release mechanism unlatches the latch; and
a power control system having a non-powered condition and a powered condition, wherein unlatching of the latch is prevented in the powered condition, wherein the power control system has a first blocking element arranged for preventing movement of the release mechanism to the unlatched position when the power control system is in the powered condition and a second blocking element which is arranged for selectively preventing movement of the release mechanism to the unlatched position when the power control system is in the non-powered condition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A latch arrangement comprising:
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a latch operable to releasably retain a striker in use;
a manually actuable element;
a release mechanisms capable of being moved in response to movement of the manually actuable element from a latched position to an unlatched position wherein the release element unlatches the latch, and;
a power control system having a first condition wherein the power control system is in a non-powered condition and actuation of the manually actuable element does not cause the release mechanism to unlatch the latch, a second condition wherein the power control system is in a powered condition and actuation of the manually actuable element does not cause the release mechanism to unlatch the latch, and a third condition wherein the power control system is in the non-powered condition and actuation of the manually actuable element causes the release mechanism to unlatch the latch, and wherein the power control system includes a mono-stable blocking element arranged for providing a physical obstruction in a path of movement of the release mechanism to prevent unlatching of the latch when the power control system is in the powered condition and to adopt a non-blocking position when the power control system is in the non-powered condition.
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11. A latch arrangement comprising:
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a latch operable to releasably retain a striker in use;
a manually actuable element;
a release mechanism capable of being moved in response to movement of the manually actuable element from a latched position to an unlatched position wherein the release mechanism unlatches the latch; and
a power control system having;
a first condition wherein the power control system is in a non-powered condition and actuation of the manually actuable element does not cause the release mechanism to unlatch the latch, a second condition wherein the power control system is in a powered condition and actuation of the manually actuable element does not cause the release mechanism to unlatch the latch, and a third condition wherein the power control system is in the non-powered condition and actuation of the manually actuable element causes the release mechanism to unlatch the latch, and wherein the power control system includes a bi-stable actuator arranged for selectively providing a physical obstruction in a path of movement of the release mechanism to prevent unlatching of the latch when the power control system is in the non-powered condition.
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Specification