Patent US5320979A successfully refreshed from Google Patents.
US3579804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making luggage cases
Assignee: Dominion Luggage Co Ltd
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Filing: 1968-11-19
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Granted: 1971-05-25
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Expires: 1988-11-19
Abstract
Abstract The method of obtaining an accurate interlock between opposing case sections by clamping two edge strips and a tongue strip which are to make up the confronting edges of the case sections in interfitting relation prior to bending, then bending the strips while clamped to effect matched bends and at the same time a permanent locking of the tongue strip in one of the edge strips and matched interfit with the other edge strip. A luggage case is produced by such a method of manufacture.
Inventors
- 👤 Jack Slan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:11
CPC Classifications
A; A45; A45C; A45C5/00; A45C5/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984; Y10T29/49861
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
147 words
In the manufacture of a luggage case having opposing sections whose confronting edges are adapted to interfit when the case is closed, the steps of: forming the confronting edges of the case sections of a pair of longitudinal bendable edge strips and a longitudinal bendable tongue strip; effecting a snug interfit between one longitudinal edge of said tongue strip and a first one of said edge strips and a loose interfit between the other longitudinal edge of said tongue strip and the second one of said edge strips; clamping said edge strips in such assembled relation with said tongue strip; and bending said strips while so clamped into the desired peripheral configuration of the confronting case edges of the case to effect permanently interlocking of said tongue strip and said first edge strip and an accurate mating interfit of said tongue strip with said second edge strip.
Claim 2
Dependent Claim
147 words
In the manufacture of a luggage case having opposing sections whose confronting edges are adapted to interfit when the case is closed, the steps of: forming the confronting edges of the case sections of a pair of longitudinal bendable edge strips and a longitudinal bendable tongue strip; effecting a snug interfit between one longitudinal edge of said tongue strip and a first one of said edge strips and a loose interfit between the other longitudinal edge of said tongue strip and the second one of said edge strips; clamping said edge strips in such assembled relation with said tongue strip; and bending said strips while so clamped into the desired peripheral configuration of the confronting case edges of the case to effect permanently interlocking of said tongue strip and said first edge strip and an accurate mating interfit of said tongue strip with said second edge strip.
Claim 3
Dependent Claim
107 words
In the manufacture of luggage cases as claimed in claim 1 the further steps of: unclamping said strips after bending and removing said second edge strip from said permanently interlocked tongue and first edge strips to relieve stresses; reassembling said second edge strip in interfitting relation with said tongue and first edge strip; then trimming off any difference in length of edge strips produced on bending and joining the ends of each of said edge strips; then reseparating said second edge strip from said permanently interlocked tongue and first strip; and attaching concave shells to each of said strips to form the walls of the case sections.
Claim 4
Dependent Claim
141 words
In the manufacture of a luggage case having opposing sections whose confronting edges are adapted to intErfit when the case is closed, the steps of: inserting one edge of a longitudinal bendable strip of plastic material into a groove shaped to snugly receive said edge formed in a first metallic strip adapted to form the confronting edge of one of said case sections; introducing the other edge of said plastic strip into a groove shaped to relatively loosely receive said other edge formed in a second metallic strip adapted to form the confronting edge of the other of said case sections; clamping said strips together; then bending said strips to the desired peripheral case configuration to permanently interlock said plastic strip with said first metallic strip while effecting a releasably interfit registration of said plastic strip with said second metallic strip.
Claim 5
Dependent Claim
141 words
In the manufacture of a luggage case having opposing sections whose confronting edges are adapted to intErfit when the case is closed, the steps of: inserting one edge of a longitudinal bendable strip of plastic material into a groove shaped to snugly receive said edge formed in a first metallic strip adapted to form the confronting edge of one of said case sections; introducing the other edge of said plastic strip into a groove shaped to relatively loosely receive said other edge formed in a second metallic strip adapted to form the confronting edge of the other of said case sections; clamping said strips together; then bending said strips to the desired peripheral case configuration to permanently interlock said plastic strip with said first metallic strip while effecting a releasably interfit registration of said plastic strip with said second metallic strip.
Claim 6
Dependent Claim
198 words
In the manufacture of a luggage case having opposing sections adapted to interfit throughout their confronting edges when the case is closed, the steps of: inserting one edge of a longitudinal stiff tongue-forming strip of bendable material into a mating groove having a mouth closely fitting on the strip formed in a longitudinal bendable strip adapted to form the confronting edge of one of the case sections; introducing the other edge of said tongue-forming strip into a mating groove having a relatively wider mouth than said closely fitting mouth formed in a longitudinal bendable strip adapted to bound the confronting edge of the other case section; clamping said strips in interfitted relation; bending said strips while clamped into the desired peripheral case configuration with the bending proceeding such that each bend is bent away from the previous bend to accommodate any longitudinal movement of said tongue-forming strip relative to said other strips, the bending effecting a permanent interlock of said one edge of said tongue-forming strip in said mating groove having said closely fitting mouth and an accurate releasable interfit registration of the other edge of said tongue-forming strip with said mating groove having said relatively wider mouth.
Claim 7
Dependent Claim
198 words
In the manufacture of a luggage case having opposing sections adapted to interfit throughout their confronting edges when the case is closed, the steps of: inserting one edge of a longitudinal stiff tongue-forming strip of bendable material into a mating groove having a mouth closely fitting on the strip formed in a longitudinal bendable strip adapted to form the confronting edge of one of the case sections; introducing the other edge of said tongue-forming strip into a mating groove having a relatively wider mouth than said closely fitting mouth formed in a longitudinal bendable strip adapted to bound the confronting edge of the other case section; clamping said strips in interfitted relation; bending said strips while clamped into the desired peripheral case configuration with the bending proceeding such that each bend is bent away from the previous bend to accommodate any longitudinal movement of said tongue-forming strip relative to said other strips, the bending effecting a permanent interlock of said one edge of said tongue-forming strip in said mating groove having said closely fitting mouth and an accurate releasable interfit registration of the other edge of said tongue-forming strip with said mating groove having said relatively wider mouth.
Claim 8
Dependent Claim
64 words
In the manufacture of a luggage case as claimed in claim 4 the further steps of: unclamping said strips and separating said strip having said wider mouth groove from said permanently interlocked strips to relieve stresses; reclamping said strips together in interfitted relation; and trimming off any excess length of said permanently interlocked strips over the length of strip having said wider mouth groove.
Claim 9
Dependent Claim
104 words
In the manufacture of a luggage case as claimed in claim 5 the further steps of: connecting the adjoining ends of said strip with which said tongue-forming strip is permanently interlocked with a joiner clip; and connecting the ends of said strip having said wider groove with one element of a hinge while said strips are still clamped while leaving said hinge unattached to said permanently interlocked strips; unclamping said strips and separating said permanently locked strips from said strip having said wider mouth groove; and attaching concave shells to each of said strips adapted to bound the confronting edges of said case sections.
Claim 10
Dependent Claim
31 words
In the manufacture of a luggage case as claimed in claim 6 the further steps of reassembling said strips in interfitting relation and securing said hinge to said permanently interlocked strips.
Claim 11
Independent Claim
281 words
The method of providing accurately matching interfitting confronting edges on opposing sections of a luggage case comprising; forming the confronting edges of the case sections of a pair of longitudinal edge strips and a longitudinal tongue strip, each of said edge strips having a first leg for attachment to a casing shell and a second right angular leg adapted to form a confronting edge face, the second leg of a first one of said edge strips presenting a longitudinal channel therein formed with a restricted mouth, the second leg of the second one of said edge strips presenting a longitudinal channel therein formed with a divergent mouth and said Tongue strip having a shouldered enlargement along one longitudinal edge adapted to snugly interlock in said restricted mouth channel, the other edge of said tongue strip being adapted to be received in said divergent mouth channel; inserting said shouldered enlargement of said tongue strip into said restricted mouth channel and said other tongue edge into said divergent mouth channel to bring said strips into assembled relation; clamping said strips in assembled relation; and bending said strips in unison while clamped into the desired peripheral configuration of the case sections with the bending proceeding from one bend to the next while bending away from the previous bend to accommodate any longitudinal movement of said tongue strip relative to said edge strips, the bending effecting a permanent interlock of said shouldered enlargement of said one tongue edge in said restricted mouth channel to permanently lock said tongue to said first edge strip and effecting an accurate releasable interfit registration of said other tongue edge with said divergent mouth channel of said second edge strip.
Claim 12
Independent Claim
281 words
The method of providing accurately matching interfitting confronting edges on opposing sections of a luggage case comprising; forming the confronting edges of the case sections of a pair of longitudinal edge strips and a longitudinal tongue strip, each of said edge strips having a first leg for attachment to a casing shell and a second right angular leg adapted to form a confronting edge face, the second leg of a first one of said edge strips presenting a longitudinal channel therein formed with a restricted mouth, the second leg of the second one of said edge strips presenting a longitudinal channel therein formed with a divergent mouth and said Tongue strip having a shouldered enlargement along one longitudinal edge adapted to snugly interlock in said restricted mouth channel, the other edge of said tongue strip being adapted to be received in said divergent mouth channel; inserting said shouldered enlargement of said tongue strip into said restricted mouth channel and said other tongue edge into said divergent mouth channel to bring said strips into assembled relation; clamping said strips in assembled relation; and bending said strips in unison while clamped into the desired peripheral configuration of the case sections with the bending proceeding from one bend to the next while bending away from the previous bend to accommodate any longitudinal movement of said tongue strip relative to said edge strips, the bending effecting a permanent interlock of said shouldered enlargement of said one tongue edge in said restricted mouth channel to permanently lock said tongue to said first edge strip and effecting an accurate releasable interfit registration of said other tongue edge with said divergent mouth channel of said second edge strip.
Claim 13
Dependent Claim
61 words
The method as claimed in claim 8 on which said strips are unclamped after bending and said second edge strip separated from said permanently interlocked first edge and tongue strips to relieve any stresses; said strips are then reassembled and clamped together in interfitted relation and any excess length of said first edge strip over said second edge strip is trimmed.
References Cited (Backward Citations)
US1555895A
Cited
US3121946A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |