US3797902A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dispenser for web-form handtowel
Assignee: NEUCO APPARATEBAU AG
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Filing: 1973-01-29
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Granted: 1974-03-19
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Expires: 1993-01-29
Abstract
Abstract A dispenser for web-form handtowel is disclosed having a casing over which in the rest condition the handtowel is always tensioned between an exit slot and an entry slot. Electric motor driven means are provided for driving a delivery roller so that this withdraws a predetermined length of handtowel from a supply and dispenses it. At the same time, a predetermined length of used handtowel is also unwound from a used handtowel roll. The loop of handtowel formed by the fresh and used handtowel lengths so dispensed hangs out of the casing during a predetermined time after which the motor driven means automatically operate to wind the handtowel up on the used handtowel roll until it is again tensioned over the casing (or until, eventually, the entire end section of the handtowel is wound up).
Inventors
- 👤 C Schnyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:57
CPC Classifications
A; A47; A47K; A47K10/00; A47K10/24; A47K10/28
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
217 words
A web-form handtowel dispenser comprising: a casing receiving a supply of handtowel; a delivery roller over which the web of handtowel coming from said supply is guided; a wind-up roller arranged for drawing in and winding up used handtowel on to a used handtowel roll in said casing; electric motor driven driving devices for driving said delivery roller and said wind-up roller, the wind-up roller being drivable both in a wind-up direction and in an opposite direction; means actuatable by hand to switch on the drive for said delivery roller and to switch on the drive for said wind-up roller to drive the latter in the said opposite direction; means for switching off the drive to said wind-up roller after unwinding of a predetermined length of handtowel from said used handtowel roll; means for switching off the drive to said delivery roller after the delivery of a similarly predetermined length of handtowel; a timing device and means for switching on the drive to said wind-up roller in the wind-up direction after the expiry of a predetermined time; and means for switching off the drive to said wind-up roller after winding up of a length of handtowel corresponding to the sum of the handtowel lengths previously unwound from said used handtowel roll and delivered over said delivery roller.
Claim 2
Dependent Claim
217 words
A web-form handtowel dispenser comprising: a casing receiving a supply of handtowel; a delivery roller over which the web of handtowel coming from said supply is guided; a wind-up roller arranged for drawing in and winding up used handtowel on to a used handtowel roll in said casing; electric motor driven driving devices for driving said delivery roller and said wind-up roller, the wind-up roller being drivable both in a wind-up direction and in an opposite direction; means actuatable by hand to switch on the drive for said delivery roller and to switch on the drive for said wind-up roller to drive the latter in the said opposite direction; means for switching off the drive to said wind-up roller after unwinding of a predetermined length of handtowel from said used handtowel roll; means for switching off the drive to said delivery roller after the delivery of a similarly predetermined length of handtowel; a timing device and means for switching on the drive to said wind-up roller in the wind-up direction after the expiry of a predetermined time; and means for switching off the drive to said wind-up roller after winding up of a length of handtowel corresponding to the sum of the handtowel lengths previously unwound from said used handtowel roll and delivered over said delivery roller.
Claim 3
Dependent Claim
46 words
A web-form handtowel dispenser according to claim 1 and further comprising a sensing member for sensing the size of said handtowel supply, and a signalling means actuated by said sensing member for indicating the time at which the supply has fallen to a predetermined minimum size.
Claim 4
Dependent Claim
37 words
A web-form handtowel dispenser according to claim 2, wherein said signalling means is connected to said sensing member in such manner that said predetermined minimum size of said supply at which said signalling means responds, is adjustable.
Claim 5
Dependent Claim
23 words
A web-form handtowel dispenser according to claim 2, wherein said signalling means comprises an electric signalling lamp switched on by said sensing member.
Claim 6
Dependent Claim
23 words
A web-form handtowel dispenser according to claim 2, wherein said signalling means comprises an aural signalling device switched on by said sensing member.
Claim 7
Dependent Claim
27 words
A web-form handtowel dispenser according to claim 2, wherein said signalling means is arranged at a centre remote from the place at which the dispenser is installed.
Claim 8
Dependent Claim
24 words
A web-form handtowel dispenser according to claim 2, wherein said signalling means comprises an indicating member which is mechanically movable from said sensing member.
Claim 9
Dependent Claim
29 words
A web-form handtowel dispenser according to claim 1 and further comprising an additional hand actuatable switch for switching on the drive of said wind-up roller in the wind-up direction.
Claim 10
Dependent Claim
21 words
A web-form handtowel dispenser according to claim 8, wherein said additional switch also switches on the drive for said delivery roller.
Claim 11
Dependent Claim
15 words
A web-form handtowel dispenser according to claim 1, wherein said driving devices include worm drives.
Claim 12
Dependent Claim
46 words
A web-form handtowel dispenser according to claim 1, wherein said means for switching on the drive for said delivery roller and for switching on the drive for said wind-up roller in said opposite direction are actuatable by drawing on the handtowel laid over said delivery roller.
Claim 13
Dependent Claim
43 words
A Web-form handtowel dispenser according to claim 1, wherein said means for switching on the drive for said delivery roller and for switching on the drive for said wind-up roller in said opposite direction comprise a switch which is actuatable directly by hand.
Claim 14
Dependent Claim
44 words
A web-form handtowel dispenser according to claim 1, wherein said means for switching on the drive for said delivery roller and for switching on the drive for said wind-up roller in said opposite direction include an electronic switching device which is actuatable by hand.
Claim 15
Dependent Claim
55 words
A web-form handtowel dispenser according to claim 1, wherein said means for switching off the drive to said wind-up roller after unwinding of handtowel include a measuring roller which is in contact with the handtowel passing to said wind-up roller and which actuates a switch after a predetermined degree of turning in the unwinding direction.
Claim 16
Dependent Claim
67 words
A web-form handtowel dispenser according to claim 14 wherein a screw is arranged adjacent the said measuring roller and co-axially therewith and said measuring roller includes a threaded bore and is so arranged that it screws along said screw when turning in the unwinding direction and then operates said switch and that when turning in said wind-up direction it screws off and then turns adjacent said screw.
Claim 17
Dependent Claim
46 words
A web-form handtowel dispenser according to claim 1, wherein said means for switching off the drive to said wind-up roller after winding up include a switch which is actuatable by a sensing member which responds to the tension in the handtowel travelling to said wind-up roller.
Claim 18
Dependent Claim
38 words
A web-form handtowel dispenser according to claim 1, wherein said means for switching off the drive to said wind-up roller after winding up are operable by a timing device after expiry of a further predetermined period of time.
Claim 19
Dependent Claim
41 words
A web-form handtowel dispenser according to claim 1, wherein said means for switching off the drive to said wind-up roller after winding up are also actuatable by a sensing device which detects the passing of the end of the web-form handtowel.
Claim 20
Dependent Claim
48 words
A web-form handtowel dispenser according to claim 1 and further comprising a smoothing bar for the handtowel travelling to said used handtowel roll and a device for moving said smoothing bar out of its operative position, said device being actuatable from said driving device of said wind-up roller.
Claim 21
Dependent Claim
63 words
A web-form handtowel dispenser according to claim 19, wherein said smoothing bar moving device includes a threaded section on a shaft of said driving device of said wind-up roller and a nut which engages this threaded section and which is movable to the end of the threaded section by turning said shaft and is connected with the smoothing bar by a draw member.
Claim 22
Dependent Claim
90 words
A web-form handtowel dispenser according to claim 1, wherein said driving devices for said wind-up roller and for said delivery roller can be driven from a common reversible electric motor and wherein a releasable clutch is arranged between said electric motor and said driving device for said delivery roller which clutch is engageable to drive said delivery roller and said wind-up roller in synchronism in the delivery direction and in the said opposite direction, respectively, and which is disengageable during drive of said wind-up roller alone in the wind-up direction.
Claim 23
Dependent Claim
47 words
A web-form handtowel dispenser according to claim 21, wherein said driving device for said delivery roller includes a worm which is turnably mounted on a shaft of said electric motor and which can be coupled with an axially displaceable coupling member connected to turn with said shaft.
Claim 24
Dependent Claim
50 words
A web-form handtowel dispenser according to claim 22, wherein said worm is axially displaceable on said shaft of said motor and the arrangement is such that the reaction of said driving device on said worm displaces the latter against said coupling member when said motor turns in the delivery direction.
Claim 25
Dependent Claim
86 words
A web-form handtowel dispenser according to claim 21 and further comprising a smoothing bar For the handtowel travelling to said used handtowel roll and a device for moving said smoothing bar out of its operative position, said device including a lever connected to said smoothing bar by a draw member, which lever is pivotable into a bar lifting position by a pawl turning with a shaft of said driving device for said wind-up roller, and can be held in this position by a further, releasable pawl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |