US3715260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for binding sheets
Assignee: Emhart Industries Inc
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Filing: 1970-12-17
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Granted: 1973-02-06
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Expires: 1990-12-17
Abstract
Abstract Apparatus for binding a stack of sheets in which the stack is aligned on an edge to be bound and clamped in the aligned position with the edge exposed for binding. A binding tape has thermoactive adhesive arranged on one exposed side in a pattern of discrete deposits. The tape and edge are then simultaneously heated until the adhesive flows in a fluid state from the discrete deposits to cover the tape. The adhesive on the tape is then pressed against the exposed edge of the stack and wiped around stack sides adjacent the edge to bind the stack of sheets.
Inventors
- 👤 A Newton
- 👤 S Eaton
- 👤 P Dornemann
- 👤 M Radcliff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:09
CPC Classifications
B; B42; B42C; B42C9/00; B42C9/0056; Y; Y10; Y10S; Y10S156/00; Y10S156/908; Y10S412/00; Y10S412/90; Y10T; Y10T156/00; Y10T156/12; Y10T156/1317; Y10T156/1322; Y10T156/1339
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
104 words
An apparatus for binding a plurality of sheets, which comprises: a clamp for gripping broad sides of a stack of the sheets leaving an edge face of the stack exposed for binding; a pressure pad for supporting a width of tape having thermoactive adhesive on an exposed side of the tape; means for simultaneously heating the edge face of the stack preparatory to binding and the adhesive on the tape to activate the adhesive for binding; and means for relatively moving the clamp and pressure pad toward each other to press the adhesive on the tape against the edge face to bind the stack.
Claim 2
Independent Claim
104 words
An apparatus for binding a plurality of sheets, which comprises: a clamp for gripping broad sides of a stack of the sheets leaving an edge face of the stack exposed for binding; a pressure pad for supporting a width of tape having thermoactive adhesive on an exposed side of the tape; means for simultaneously heating the edge face of the stack preparatory to binding and the adhesive on the tape to activate the adhesive for binding; and means for relatively moving the clamp and pressure pad toward each other to press the adhesive on the tape against the edge face to bind the stack.
Claim 3
Dependent Claim
57 words
An apparatus as in claim 1 additionally comprising: a movable wiper bar cooperative with one of the broad sides of the stack for wiping tape around the edge face and against the broad side of the stack, and means operative after the clamp and pressure pad press the adhesive against the edge face for moving the wiper.
Claim 4
Dependent Claim
57 words
An apparatus as in claim 1 additionally comprising: means for determining a width of tape appropriate for binding the stack, means for feeding the determined width of tape to the pressure pad, and means for cutting the determined width of tape from a larger piece of tape to form a strip of tape for binding the stack.
Claim 5
Dependent Claim
105 words
An apparatus according to claim 3 wherein the means for cutting the tape comprise: a support bar slidably mounted on a machine frame; a plurality of knife blades fixed to the support bar for engagement with the tape, the knife blades having a point and a sharpened edge inclined from the point toward the support bar for first piercing and then slicing the tape; means for slidably moving the support bar perpendicularly to the tape for cutting the tape by engagement of the tape with the knife blades; and means for holding the tape against movement with the blades upon cutting engagement with the blades.
Claim 6
Dependent Claim
78 words
An apparatus according to claim 1 wherein the means for moving the pressure pad comprise: a pressure pad support for supporting the pad; a pair of lazy-tongs connecting opposite ends of the pressure pad support to the machine frame and having a shaft centrally connecting the pair of tongs; and a cam slidably mounted on the machine frame and having a cam surface for lifting the shaft upon sliding engagement with the shaft to lift the pressure pad.
Claim 7
Dependent Claim
58 words
An apparatus as in claim 1 additionally comprising an aligning table near the clamp on which the edge of the stack is placed for aligning the sheets of the stack wherein the table is transparent to heat from the heating means for heating the edge of the stack, while it is on the table, simultaneously with the adhesive.
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) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |