(19)
(11) EP 0 425 256 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.03.1992 Bulletin 1992/10

(43) Date of publication A2:
02.05.1991 Bulletin 1991/18

(21) Application number: 90311632.5

(22) Date of filing: 23.10.1990
(51) International Patent Classification (IPC)5: E06B 3/66
(84) Designated Contracting States:
CH DE FR GB IT LI

(30) Priority: 23.10.1989 US 425006

(71) Applicant: TOOLS FOR BENDING, INC.
Denver Colorado 80223 (US)

(72) Inventors:
  • Ekren, Dennis J.
    Denver, Colorado 80223 (US)
  • Seaton, Kenneth C.
    Denver, Colorado 80222 (US)

(74) Representative: Knott, Stephen Gilbert et al
MATHISEN, MACARA & CO. The Coach House 6-8 Swakeleys Road
Ickenham Uxbridge UB10 8BZ
Ickenham Uxbridge UB10 8BZ (GB)


(56) References cited: : 
   
       


    (54) Method and apparatus for dispensing desiccant materials into window spacer frames


    (57) A method and apparatus for simultaneously filling adjacent sides of a window spacer frame (F) with a desiccant material (D) is characterized by a fill head (18) having a discharge port (56) in communication with a desiccant chamber (20), a releasable clamping device (46,47,49) for clamping the open ends of the adjacent sides in alignment with the discharge port (56), and the pressurization of the chamber (20) with air to force the desiccant material (D) through the discharge port (56) for a time interval (T) necessary to fill the sides of the spacer frame (F). An air conveyor (25) is provided to induce the flow of desiccant material (D) from a reservoir (24) for the purpose of periodically refilling the desiccant chamber (20) when empty, and a filter system (26,29) in the air conveyor (25) will separate the desiccant material from the air stream while permitting the air stream to be exhausted to atmosphere during the filling operation.







    Search report