Abstract: Floor cleaning machine comprising: a) a front portion (13) and a rear portion (12); the rear portion (12) comprising at least two lateral rear wheels (11); b) a chassis (10) with a lower side (22) directed towards a floor (20) to be cleaned and two lateral sides (23a, 23b); c) at least one front wheel (3) arranged in the front portion (13); and d) a cleaning unit (14) attached to the chassis (10) and including at least one rotatable brush (6) which is arranged in front of the rear wheels (11) and which has a floor contact region (28) so as to contact a floor (20) to be cleaned; wherein the at least one front wheel (3) is moveable with respect to the chassis (10) from a retracted position to a lowered position in which it protrudes from the floor contact region (28) of the at least one brush (6).

Abstract: Floor cleaning apparatus (1) comprising: a) a front portion (16) and a rear portion (17); the rear portion (17) comprising two lateral rear wheels (3); b) a chassis (2) and c) a cleaning unit (4) attached to the chassis (2), wherein the cleaning unit (4) comprises at least one rotatable brush (20) which is arranged in the front portion (16) of the cleaning apparatus (1) so as to be contactable with the floor (12) to be cleaned and a suction device (25) including a front suction unit (8) arranged in front of the at least one brush (20) and a rear suction unit (7) arranged rearward of the at least one brush (20), wherein the front suction unit (8) comprises a front suction channel (29) and a closing member (26) for closing the front suction channel (29).

Abstract: Floor cleaning apparatus (1) comprising: a) a front portion (16) and a rear portion (17); the rear portion (17) comprising two lateral rear wheels (3); b) a chassis (2); and c) a cleaning unit (4) attached to the chassis (2), wherein the cleaning unit (4) comprises: a first tank (15); a second tank (13); at least one rotatable brush (20), wherein the at least one brush (20) is arranged in the front portion (16) of the cleaning apparatus (1) so as to be contactable with the floor (12) to be cleaned; and a suction device (25) including at least a rear suction unit (7) arranged rearward of the at least one brush (20), and wherein the first tank (15) is attached to the chassis (2) and is configured as a receptacle with its smallest dimension X extending essentially vertically; and the second tank (13) is arranged in the rear portion (17) of the cleaning apparatus (1) and is configured as a receptacle having a smallest dimension Z in the forward or rearward travel direction of the cleaning apparatus (1).

Abstract: Floor cleaning apparatus (1) comprising: a) a front portion (16) and a rear portion (17); the rear portion (17) comprising two lateral rear wheels (3); b)a chassis (2); and c) a cleaning unit (4) attached to the chassis (2), wherein the cleaning unit (4) comprises: a first tank (15); a second tank (13); at least one rotatable brush (20), wherein the at least one brush (20) is arranged in the front portion (16) of the cleaning apparatus (1) so as to be contactable with the floor (12) to be cleaned; and a suction device (25) including at least a rear suction unit (7) arranged rearward of the at least one brush (20), and wherein the first tank (15) is attached to the chassis (2) and is configured as a receptacle with its smallest dimension X extending essentially vertically; and the second tank (13) is arranged in the rear portion (17) of the cleaning apparatus (1) and is configured as a receptacle having a smallest dimension Z in the forward or rearward travel direction of the cleaning apparatus (1).

Abstract: Floor cleaning apparatus (1) comprising: a) a front portion (16) and a rear portion (17); the rear portion (17) comprising two lateral rear wheels (3); b) a chassis (2) and c) a cleaning unit (4) attached to the chassis (2), wherein the cleaning unit (4) comprises at least one rotatable brush (20) which is arranged in the front portion (16) of the cleaning apparatus (1) so as to be contactable with the floor (12) to be cleaned, a brush housing (22) and a suction device (25) including at least a rear suction unit (7) arranged rearward of the at least one brush (20). The rear suction unit (7) is attached to the brush housing (22) by means of a resilient connecting device (10) allowing the rear suction unit (7) to move laterally with respect to the chassis (2) against an elastic resistance provided by the resilient connecting device (10).