Patent US-1913-1104429

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Safety seat for airplane with springs and its own wheels to protect the operator in case of a rough landing.

The action of the shock absorber is as follows: In the case of an ordinary landing, when the apparatus comes in contact with the ground, only the wheels of the landing train act. In the case of a sudden landing the wheels 11 fixed on the ends of the rods 5 are intended when coming in turn in contact with the ground, to raise the seats 9, the occupants of which owing to the compensating springs 8 placed below the seats will not experience any shock. In the case of a more violent shock or a fall, the seats will ascend and take hold of the racks 10, maintaining the aviators in the air, thus preventing them from being crushed by the wreckage of the apparatus.

Inventor location: 136 Avenue Parmentier, Paris, France


  • Patent 1104429 document and bibliographic info on espacenet
  • Patent 1104429 at google patents
  • Witnesses (on the final document page): Edmond Secoutierier (possibly just “Secoutier”) and Hanson C. Coxe
  • Witnesses (on the final diagram page): Alfred R. Anderson and Frank H. Logan ; the diagram page also includes the not very legible name of an attorney representing the inventor.

Year filed 1913
Year granted 1914
Office US
Patent number 1104429
Inventors Nazaire Lacrotte
Inventor country FR
Applicant person Nazaire Lacrotte
Applicant firm
Applicant type INDIV
Applicant is inventor? Yes
Original title Safety device for aeroplanes
English title Safety device for aeroplanes
Tech fields frame, passenger, safety, airplane, stability, wheels, landing
Filing date 1913/09/09
Full specification filed date
Application number 1913788950
Grant date 1914/07/21
Granted? Yes
Publication date
Supplementary to patent
Related to aircraft? Yes
Serial number 788950
Patent agent
Assigned to
National tech categories USPC 244/122R, USPC 244/104CS, USPC 267/136
IPCs IPC B64C25/00
CPCs CPC B64C25/62
Family year 1913
First filing? No
Cites these patents
Citations from after 1930
Application ID 47650692
INPADOC family ID 44050456
Number of text pages 3
Number of diagram pages 4
Number of figures 5
Number of claims 5