(19)
(11) EP 0 056 310 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.09.1982 Bulletin 1982/36

(43) Date of publication A2:
21.07.1982 Bulletin 1982/29

(21) Application number: 82300087

(22) Date of filing: 08.01.1982
(84) Designated Contracting States:
BE DE FR IT

(30) Priority: 09.01.1981 GB 8100601

(71) Applicant: Wood, Thomas John
 ()

(72) Inventor:
  • Wood, Thomas John
     ()

   


(54) Cartridge for holding mastic or similar material in an applicator gun


(57) cartridge for holding mastic or similar material in the barrel (100) of an applicator gun consists of an open ended hollow cylindrical member or sleeve (1) having a bore (10) therethrough which receives a piston (2) slidable in the bore in either direction. With the piston (2) at one end of the bore (10) a body of mastic material (M) is inserted in the bore at the other end for expulsion by the piston (2) therefrom when the mastic material (M) is heat softened in the gun. The arrangement is such that after full expulsion of the mastic material (M) the sleeve (1) can then be either used in a reverse position in the gun barrel (100) with a further body of mastic material (M) inserted in the sleeve (1) for expulsion by repeat operation of the piston (2), or the piston (2) can be returned along the bore (10) for similar operation. The piston (2) is preferably retained against movement out of the sleeve (1) such as by retaining rings (13) at each end of the latter.






Search report