Patent US-1844-3523

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This patent defined the Pratt truss that Octave Chanute and the Wright brothers used.

Caleb Pratt was in Boston, Massachusetts. Thomas Willis Pratt was in Norwich, Connecticut. There is an article about Thomas Willis Pratt on English Wikipedia.[1]

References and sources


Year filed 1843
Year granted 1844
Office US
Patent number 3523
Inventors Caleb Pratt, Thomas Willis Pratt
Inventor country
Applicant person Caleb Pratt, Thomas Willis Pratt
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Truss-frame of bridges
English title Truss-frame for bridges, later called the Pratt truss
Tech fields
Filing date March 22, 1843
Full specification filed date
Application number
Grant date April 4, 1844
Granted? Yes
Publication date April 4, 1844
Supplementary to patent
Related to aircraft? No
Serial number
Patent agent
Assigned to
National tech categories construction, structure
IPCs
CPCs CPC E01D15/127
Family year 1844
First filing? Yes
Cites these patents
Citations from after 1930
Application ID
INPADOC family ID
Number of text pages 2
Number of diagram pages 1
Number of figures 5
Number of claims