Mobile safety fall arrest cart
AssigneeFrank P. Frey and Company
InventorDavid Wayne Schroeder
Life of this patent
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Abstract
A mobile safety fall arrest cart is provided. The mobile safety fall arrest cart is configured to move along an edge of an elevated surface as a worker works along the edge. The worker is connected to the cart with a safety line. If the worker falls from the elevated surface, the weight of the worker causes a spike assembly to move from a stowed configuration to a deployed configuration. In the deployed configuration, a spike member engages the elevated surface so as to assist in arresting the worker's fall.
Claims17
A mobile safety fall arrest system comprising:
- a mobile structure that is configured to be moved along an elevated surface;
- a spike assembly coupled to and supported by said mobile structure, said spike assembly being moveable between a stowed configuration and a deployed configuration;
- and
- a trigger assembly operatively coupled to said spike assembly, said trigger assembly being moveable between a set configuration and a released configuration, wherein said spike assembly includes a spike member,
- wherein said spike member is displaced from the elevated surface when said spike assembly is in the stowed configuration,
- wherein said spike member is configured to pierce the elevated surface as said spike assembly moves towards the deployed configuration,
- wherein said trigger assembly retains said spike assembly in the stowed configuration when said trigger assembly is in the set configuration,
- wherein said trigger assembly allows said spike assembly to move from the stowed configuration to the deployed configuration when said trigger assembly is in the released configuration,
- wherein said spike member is oriented at a first angle relative to said mobile cart when said spike assembly is in the deployed configuration and wherein said spike member is oriented at a second angle relative to said mobile cart when said spike assembly is in the stowed configuration, wherein the first angle is approximately forty-five (45) degrees, and
- wherein the second angle is less than forty-five (45) degrees.
A method of arresting a fall, the method comprising:
- positioning a spike assembly relative to an elevated surface while the spike assembly is in a stowed configuration such that a spike member of the spike assembly is displaced from the elevated surface;
- and
- coupling an elongate member to a user such that when the user falls, the weight of the user creates tension in the elongate member,
- wherein a trigger assembly is operatively coupled to the spike assembly in a set configuration prior to the user falling, the trigger assembly being configured to move from the set configuration to a released configuration upon the tension being created in the elongate member,
- wherein the spike member is configured to pierce the elevated surface as the spike assembly moves towards the deployed configuration,
- wherein the trigger assembly retains the spike assembly in the stowed configuration when the trigger assembly is in the set configuration,
- wherein the trigger assembly allows the spike assembly to move from the stowed configuration to the deployed configuration when the trigger assembly is in the released configuration,
- wherein said spike member is oriented at a first angle relative to said mobile cart when said spike assembly is in the deployed configuration and wherein said spike member is oriented at a second angle relative to said mobile cart when said spike assembly is in the stowed configuration,
- wherein the first angle is approximately forty-five (45) degrees, and
- wherein the second angle is less than forty-five (45) degrees.
A fall arrest system comprising:
- a spike assembly positioned relative to an elevated surface, said spike assembly being moveable between a stowed configuration and a deployed configuration;
- and
- a trigger assembly operatively coupled to said spike assembly, said trigger assembly being moveable between a set configuration and a released configuration, wherein said spike assembly includes a spike member,
- wherein said spike member is displaced from the elevated surface when said spike assembly is in the stowed configuration,
- wherein said spike member is configured to pierce the elevated surface as said spike assembly moves towards the deployed configuration,
- wherein said trigger assembly retains said spike assembly in the stowed configuration when said trigger assembly is in the set configuration,
- wherein said trigger assembly allows said spike assembly to move from the stowed configuration to the deployed configuration when said trigger assembly is in the released configuration,
- wherein said spike member is oriented at a first angle relative to said mobile cart when said spike assembly is in the deployed configuration and wherein said spike member is oriented at a second angle relative to said mobile cart when said spike assembly is in the stowed configuration,
- wherein the first angle is approximately forty-five (45) degrees, and
- wherein the second angle is less than forty-five (45) degrees.
Dependencies are inferred from the claim text.