US3799044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Machine for producing self-opening envelopes
Assignee: Individual
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Filing: 1973-01-22
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Granted: 1974-03-26
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Expires: 1993-01-22
Abstract
Abstract A machine for producing self-opening envelopes includes a pair of laterally spaced sprocket chains transporting along a longitudinal path regularly spaced pairs of laterally spaced studs and an arm with a strip guide at an end thereof is oscillated to opposite sides of the advancing stud pairs and withdraws tear strip from a roll and interlaces the studs so that successive transverse tear strip sections which are interconnected at alternate ends are applied to the advancing studs by the guide. Adhesive is applied to the transverse tear strip sections and overlapping precut envelope blanks are superimposed on the advancing transverse tear strip sections with the flap, front panel delineating lines coinciding with the tear strip sections and the longitudinal tear strip sections are severed between their ends.
Inventors
- 👤 J Manolis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:18
CPC Classifications
B; B31; B31B; B31B70/00; B31B70/74; B31B70/81; B31B2150/00; B31B2160/00; B31B2160/10; B31B2160/104; B31B70/813; B31B70/8134; Y; Y10; Y10S; Y10S493/00; Y10S493/916; Y10S493/917; Y10S493/923
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
132 words
A machine for producing self-opening envelopes comprising a plurality of longitudinally spaced pairs of transversely spaced studs, means for advancing said pairs of studs along a longitudinal path, neans for applying a continuous tear strip to said advancing studs to interlace said studs in a pattern with said tear strip extending tranSversely between the studs of each successive pair of studs and longitudinally between successive longitudinally spaced studs alternately along opposite sides of said longitudinal path, means for superimposing successive envelope members on said stud advanced tear strip, said envelope members having body panels and closure flaps, with the lines delineating said body panels and closure flaps extending proximate successive transversely extending tear strip sections conveyed by said studs, and means for securing said successive tear strip sections to successive envelope bodies.
Claim 2
Dependent Claim
132 words
A machine for producing self-opening envelopes comprising a plurality of longitudinally spaced pairs of transversely spaced studs, means for advancing said pairs of studs along a longitudinal path, neans for applying a continuous tear strip to said advancing studs to interlace said studs in a pattern with said tear strip extending tranSversely between the studs of each successive pair of studs and longitudinally between successive longitudinally spaced studs alternately along opposite sides of said longitudinal path, means for superimposing successive envelope members on said stud advanced tear strip, said envelope members having body panels and closure flaps, with the lines delineating said body panels and closure flaps extending proximate successive transversely extending tear strip sections conveyed by said studs, and means for securing said successive tear strip sections to successive envelope bodies.
Claim 3
Dependent Claim
35 words
The machine of claim 1 wherein said tear strip securing means comprises means for applying an adhesive to the stud advanced transversely extending tear strip sections prior to the superimposition of said envelope members thereon.
Claim 4
Dependent Claim
29 words
The machine of claim 1 including means for severing the sections of said tear stirp extending longitudinally between successive longitudinally spaced studs following the superimposition of said envelope members.
Claim 5
Dependent Claim
29 words
The machine of claim 1 including pressure means extending along the longitudinal path of said stud pairs for pressing together said envelope members and transversely extending tear strip section.
Claim 6
Dependent Claim
52 words
The machine of claim 4 wherein said pressure means comprises an endless belt having a longitudinal run extending along said stud pair longitudinal path between the studs of succesive pairs of studs and means for advancing said belt in the direction of advance of said studs and at substantially the same speed.
Claim 7
Dependent Claim
56 words
The machine of claim 1 wherein said means for applying said tear strip to said advancing studs comprises a tear strip guide, a tear strip source, means for leading tear strip from said source to said guide and means for periodically reciprocating said strip guide between points transversely outwardly of the studs of each successive pair.
Claim 8
Dependent Claim
35 words
The machine of claim 6 wherein said strip guide traverses a path initially from a point rearwardly of one stud of a pair to a point forwardly of the other stud of the respective pair.
Claim 9
Dependent Claim
60 words
The machine of claim 7 wherein said strip guide reciprocating means comprises an arm, said strip guide being mounted proximate a free end of said arm and means for intermittently swinging said arm between points outside the opposite longitudinal paths of said studs with the advance of said studs an increment equal to the distance between successive pairs of studs.
Claim 10
Dependent Claim
63 words
The machine of claim 1 wherein said envelope members comprise lay flat precut envelope blanks, said body panels defining the envelope front walls and said blanks including laterally extending side flaps, the distance between the studs of each pair being approximately equal to said envelope front wall and said side flaps of said superimposed envelopes projecting laterally from the paths of said studs.
Claim 11
Dependent Claim
68 words
The machine of claim 9 comprising means including forwardly upwardly inclined guide plates extending along the outside of the paths of said studs for raising said side flaps with the advance of said envelope blanks, and means for severing the longitudinal extending sections of said tear strip between successive studs including transverse blades disposed below said stud paths and said guide plates and means for actuating said blades.
Claim 12
Dependent Claim
59 words
The machine of claim 3 wherein said severing means comprises normally open blade elements disposed between the longitudinally spaced studs of successive longitudinally spaced pairs thereof and advanced with said studs, and means for closing said blade elements to sever the corresponding tear strip sections extending longitudinally between successive longitudinally spaced studs following the superimposition of said envelope members.
Claim 13
Dependent Claim
53 words
The machine of claim 11 wherein said blade elements comprise plungers having side recesses formed therein provided with blade defining edges and engaging said longitudinally extending tear strip sections, spring means urging said plungers to a blade open position, and means for axially aDvancing said plunger to a blade closed strip severing position.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |