Back to results
US 9,850,103 B2Granted
Hoist cable overload detection systems and methods
AssigneeGoodrich Corporation
InventorsDavid R. Lopes, Bejan Maghsoodi
Life of this patent
Estimating the term…
Abstract
A hoist hook assembly having a cable overload detection system may include a plate, a hook mechanically coupled to the plate, and a switch mechanically coupled to the plate. The switch may be configured to translate into a triggered position in response to a load on the hook indicative of an overload condition.
Claims16
A hoist hook assembly, comprising:
- a first plate;
- a hook mechanically coupled to the first plate;
- a second plate spaced a distance from and mechanically coupled to the first plate by a spring;
- and
- a switch mechanically coupled to the plate and configured to translate into a triggered position in response to a predetermined load on the hook,
- wherein the switch comprises:
- a pin disposed in an opening formed in the first plate with the pin having an untriggered position and a triggered position, wherein the pin is configured to translate from the untriggered position into the triggered position in response to a displacement of the first plate relative to the second plate;
- a pin retention spring disposed in a cavity defined by the first plate;
- and
- a pin retention head coupled to the pin retention spring and configured to rest in a first groove formed in the pin in response to the pin being in the untriggered position.
7 more elements
A hoist cable overload detection system, comprising:
- a first plate;
- a spring mechanically coupled to the first plate;
- a second plate mechanically coupled to the spring and oriented with the spring between the first plate and the second plate;
- a pin disposed in an opening formed in the first plate with the pin having an untriggered position and a triggered position, wherein the pin is configured to translate from the untriggered position into the triggered position in response to a displacement of the first plate relative to the second plate;
- a pin retention spring disposed in a cavity defined by the first plate;
- and
- a pin retention head coupled to the pin retention spring and configured to rest in a first groove formed in the pin in response to the pin being in the untriggered position.
4 more elements
A method of detecting an overload condition on a hoist assembly, comprising:
- setting a switch on a hoist hook assembly to an untriggered position with the switch configured to translate to a triggered position in response to the overload condition;
- applying a load to the hoist hook assembly;
- and
- detecting the switch in the triggered position in response to an occurrence of the overload condition,
- wherein the hoist assembly comprises:
- a first plate;
- a spring mechanically coupled to the first plate;
- a second plate mechanically coupled to the spring and oriented with the spring between the first plate and the second plate;
- a pin disposed in an opening formed in the first plate with the pin having an untriggered position and a triggered position, wherein the pin is configured to translate from the untriggered position into the triggered position in response to a displacement of the first plate relative to the second plate;
- a pin retention spring disposed in a cavity defined by the first plate;
- and
- a pin retention head coupled to the pin retention spring and configured to rest in a first groove formed in the pin in response to the pin being in the untriggered position.
9 more elements
Dependencies are inferred from the claim text.