US3633633A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Strapping apparatus
Assignee: Ty-Lok Assembly Systems Inc
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Filing: 1970-01-27
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Granted: 1972-01-11
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Expires: 1990-01-27
Abstract
Abstract A portable strapping apparatus and method for semiautomatically applying an indeterminate length of plain flat surface plastic strapping around a bundle of electrical conductors includes a strapping material feed mechanism capable of feeding the strapping in opposite directions, a pair of jaws openable to accommodate the bundle of electrical conductors, strapping guides for guiding the strapping around the bundle of electrical conductors inside the jaws, and a cutter for cutting the strapping to separate the strapping supply from a portion of the strapping extending around the bundle of electrical conductors. The end of the strapping is twisted and together with a hollow closure fastener it forms a detent for holding the strapping during reverse feeding. After reverse feeding, a combination twister cutter cuts the strapping adjacent the closure fastener and twists it simultaneously to form a further detent. The closure fasteners, which are molded plastic of unique configuration, are fed into operative position from a magazine. The apparatus is embodied in a simple lightweight trigger operated gun.
Inventors
- 👤 Albert J Countryman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:44
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/78; F16D65/84; F16D65/847; B; B65; B65B; B65B13/00; B65B13/02; B65B13/025; B65B13/027; B65D; B65D63/00; B65D63/10; B65D63/14; B65D63/16; Y; Y10; Y10T; Y10T24/00; Y10T24/14; Y10T24/1498
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
158 words
Strapping apparatus for semiautomatically applying an indeterminate length of plain flat surface plastic strapping around a bundle of electrical conductors and securing the strapping by a closure fastener, the strapping apparatus comprising; a strapping feed mechanism for feeding strapping in opposite directions, a pair of jaws at least one jaw being movable to open with respect to the other jaw and accommodate the bundle of electrical conductors, strapping guide means inside the jaws for guiding the strapping around the bundle of electrical conductors, means to position a closure fastener in operative position to receive strapping being fed, a twister for twisting the free end of the strapping in a plane transverse to the axis of the strapping so that the strapping end and the closure fastener form a detent for holding the free end of the strapping during reverse feeding, and a twister-cutter positioned adjacent the closure element for twisting and cutting the fed end of the strapping.
Claim 2
Dependent Claim
158 words
Strapping apparatus for semiautomatically applying an indeterminate length of plain flat surface plastic strapping around a bundle of electrical conductors and securing the strapping by a closure fastener, the strapping apparatus comprising; a strapping feed mechanism for feeding strapping in opposite directions, a pair of jaws at least one jaw being movable to open with respect to the other jaw and accommodate the bundle of electrical conductors, strapping guide means inside the jaws for guiding the strapping around the bundle of electrical conductors, means to position a closure fastener in operative position to receive strapping being fed, a twister for twisting the free end of the strapping in a plane transverse to the axis of the strapping so that the strapping end and the closure fastener form a detent for holding the free end of the strapping during reverse feeding, and a twister-cutter positioned adjacent the closure element for twisting and cutting the fed end of the strapping.
Claim 3
Dependent Claim
32 words
Strapping apparatus as in claim 1 further comprising a pneumatic control circuit for semiautomatic operation including pneumatic cylinders controlling operation of the strapping feed mechanism, movable jaw, the twister, and the twister-cutter.
Claim 4
Dependent Claim
29 words
Strapping apparatus as in claim 2 wherein the control circuit includes means for reversing the strap feeding mechanism and then operating the twister-cutter after reverse feeding has been completed.
Claim 5
Dependent Claim
33 words
A strapping apparatus as in claim 2 wherein the control circuit includes means for operating the feeding mechanism cylinder for feeding strapping in a forward direction only after the movable jaw is closed.
Claim 6
Dependent Claim
27 words
A strapping apparatus as in claim 2 wherein the control circuit includes a manually operated valve for initiating the operation of pneumatic cylinders in a predetermined sequence.
Claim 7
Dependent Claim
35 words
A strapping apparatus as in claim 1 wherein the means to position the closure fastener in operative position includes feeding means for feeding the closure fastener into operative position from a magazine of such fasteners.
Claim 8
Dependent Claim
25 words
Strapping apparatus as defined in claim 1 wherein the strapping feed mechanism includes a power cylinder slide and an adjustable pressure pad engaging the strapping.
Claim 9
Dependent Claim
28 words
A strapping apparatus as in claim 1 wherein the twister and the twister-cutter are an assembly including a pair of separately rotatable tubular members, one within the other.
Claim 10
Dependent Claim
65 words
A strapping apparatus as in claim 8 wherein the inner rotatable tubular member includes a member having a die slot in a face thereof adjacent the closure fastener element, a slotted stationary die member positioned inside the tubular member having a die slot to accommodate the strapping fed therethrough, the inner tubular member being rotatable to twist and sever the strapping at the die slots.
Claim 11
Dependent Claim
32 words
A strapping apparatus as in claim 8 wherein the outer tubular member operates a slotted twister member on rotation of the outer tubular member to twist the free end of the strapping.
Claim 12
Dependent Claim
39 words
A strapping apparatus as in claim 1 wherein the movable jaw is split longitudinally so that the jaw halves may be closed to form a portion of the guide means or opened to free the jaw from the strapping.
Claim 13
Dependent Claim
34 words
A strapping apparatus as in claim 11 wherein each of the jaw halves include cam surfaces for operating the closing of the jaws and a spring is provided to normally bias the jaws open.
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |