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US 2021/0270057 A1Published application
Key, lock, and latch assembly
AssigneeHartwell Corporation
InventorsThomas J. HELSLEY, Lane Dennis DALAN
Life of this patent
Estimating the term…
Abstract
A latch mechanism includes a hook-handle assembly coupled to a first panel and a clevis coupled to a second panel. The hook-handle assembly engages the clevis to secure the first panel relative to the second panel.
Claims22
1-19. (canceled)
A key comprising:
- a head;
- a substantially cylindrical shaft coupled to the head and extending from the head, the shaft being hollow to define a cavity therein;
- a signal flag coupled to the head and configured to enhance the visibility of the key;
- and
- a protrusion extending radially outward from an exterior of the shaft,
- wherein a leading end of the shaft is formed to define three mating portions extending into an exterior of the shaft and circumferentially distributed around the shaft, and
- wherein each mating portion is arranged at a different distance from the head than the other mating portions.
4 more elements
A device for use with a lock apparatus, the device comprising:
- a head;
- a shaft coupled to the head, the shaft being hollow to define a cavity therein;
- and
- a protrusion extending outward from the shaft,
- wherein a leading end of the shaft is formed to define a plurality of mating portions extending into an exterior of the shaft and corresponding to a plurality of tumbler pins of a tumbler arrangement in the lock apparatus, and the shaft is configured to be received in the lock apparatus to engage the mating portions with the tumbler arrangement to allow movement of the lock apparatus between locked and unlocked positions.
2 more elements
A key comprising:
- a head;
- a shaft coupled to the head and extending from the head, the shaft being hollow to define a cavity therein;
- and
- a protrusion extending outward from an exterior of the shaft,
- wherein a leading end of the shaft is formed to define a plurality of mating portions extending into an exterior of the shaft.
2 more elements
The key of claim 44, wherein the shaft is substantially cylindrical, and wherein the protrusion extends radially outward from the exterior of the shaft.
Dependencies are inferred from the claim text.