Coffee brewer
OwnerAlan M. Kinginventor
Life of this patent
Estimating the term…
Abstract
A beverage brewing machine which has upper and lower brewing chambers which are movable relative to each other so as to clamp a strip-shaped filter therebetween during the brewing process and the chambers can be separated so as to allow the filter strip to be removed from the brewing chamber and the beverage residual wiped therefrom after which the filter strip is returned to the brewing chambers which are then resealed for the next cycle. A hold down grid engages the top surface of the filter to hold down as a piston moves in the lower chamber upwardly to force air through the filter to agitate the beverage. When the piston reaches top dead center, the hold down grid is lifted. When the piston passes the opening the brewed coffee is poured.
Claims14
A beverage brewing machine comprising in combination,
- (a) an upper brewing chamber adapted to receive hot water and a beverage material and having an open lower end,
- (b) a lower chamber with an open upper end normally in registration and sealed with said open lower end,
- (c) a reusable filter mounted between said upper and lower chambers and said chambers normally clamping said filter therebetween,
- (d) a reciprocable piston mounted in said lower chamber for forcing air through said filter into said upper chamber and for withdrawing brewed beverage through said filter,
- (e) means for separating and sealing said upper and lower chambers so as to unclamp said filter,
- (f) means for moving said filter from between said upper and lower chambers,
- (g) means for removing the used beverage material from said filter while said upper and lower chambers are separated, and
- (h) means for returning said filter between said upper and lower chamber.
A beverage brewing machine comprising in combination,
- (a) an upper brewing chamber adapted to receive hot water and a beverage material and having an open lower end,
- (b) a lower chamber with an open upper end normally in registration and sealed with said open lower end,
- (c) a filter mounted between said upper and lower chambers and said chambers normally clamping said filter therebetween,
- (d) a reciprocable piston mounted in said lower chamber for forcing air through said filter into said upper chamber and for withdrawing brewed beverage through said filter,
- (e) means for separating and sealing said upper and lower chambers so as to unclamp said filter,
- (f) hold-down means mounted within the upper brewing chamber movable between a first position wherein the hold-down means presses down on the filter at least when the piston forces air upwardly through said filter and a second position wherein the hold-down means is released from the filter.
Dependencies are inferred from the claim text.