(19)
(11) EP 4 499 239 A2

(12)

(88) Date of publication A3:
30.11.2023

(43) Date of publication:
05.02.2025 Bulletin 2025/06

(21) Application number: 23781988.3

(22) Date of filing: 27.03.2023
(51) International Patent Classification (IPC): 
A62B 9/00(2006.01)
A62B 19/00(2006.01)
F04D 29/28(2006.01)
F04D 29/42(2006.01)
A62B 18/02(2006.01)
F04D 17/08(2006.01)
F04D 29/30(2006.01)
(52) Cooperative Patent Classification (CPC):
A62B 18/006; A62B 18/045; A62B 7/10; A62B 18/02; A62B 23/02
(86) International application number:
PCT/US2023/064992
(87) International publication number:
WO 2023/192823 (05.10.2023 Gazette 2023/40)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
KH MA MD TN

(30) Priority: 26.03.2022 US 202263324045 P

(71) Applicant: D. Wheatley Enterprises, Inc.
Belcamp, Maryland 21017-1211 (US)

(72) Inventors:
  • IKEMOTO, Ken
    Belcamp, Maryland 21017 (US)
  • SMITH, Collin
    Belcamp, Maryland 21017 (US)
  • ZAMENSKI, Corey
    Belcamp, Maryland 21017 (US)
  • HANSON, David
    Belcamp, Maryland 21017 (US)

(74) Representative: FRKelly 
Waterways House Grand Canal Quay
Dublin D02 PD39
Dublin D02 PD39 (IE)

   


(54) COMPACT POWERED AIR PURIFYING RESPIRATOR HAVING IMPROVED AIRFLOW EFFICIENCY