US4485544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making articles comprising two components hinged one to the other
Assignee: Individual
•
Filing: 1982-02-18
•
Granted: 1984-12-04
•
Expires: 2002-02-18
Abstract
Abstract The manufacture of two hingedly connected components of a toggle latch by simultaneously press-forming two strips of metal feeding into a multi-phased die wherein the last operation comprises the folding of lugs on a component about an end portion of the other component so that oppositely projecting bosses on that end portion becomes homed in openings in the respective lugs.
Inventors
- 👤 Henricus J. Van Ryswyk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:11
CPC Classifications
B; B21; B21D; B21D35/00; B21D53/00; B21D53/38; B21D53/40; Y; Y10; Y10S; Y10S16/00; Y10S16/42; Y10T; Y10T29/00; Y10T29/24; Y10T29/49; Y10T29/49789; Y10T29/49798; Y10T29/49826; Y10T29/4984; Y10T29/49845; Y10T29/49858; Y10T29/49908; Y10T29/49915; Y10T29/49925
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
173 words
A method of making two components as a hinged assembly comprising the steps of feeding separate strips of work stock intermittently and simultaneously into opposite portions of a phased die and operating the phased die to simultaneously form both strips and thereby press-forming two, co-planar, oppositely directed lugs on one piece of work stock, press-forming two parallel spaced apart co-directed lugs on the other piece of work stock, press-forming a clearance hole in each of two of said four lugs, press-forming a protrusion on each of the other two of said four lugs, press-forming said co-planar, oppositely directed lugs into a U-shape, then press-folding said co-directed lugs towards each other to embrace said U-shaped lugs, said protrusions being disposed in a direction so that by said folding step said protrusions are engaged respectively into associated said clearance holes, and then press-severing each of the formed portions of the assembly from the work stock to produce two components hingedly connected together with the two clearance holes and two protrusions co-axial on the hinge axis.
Claim 2
Independent Claim
173 words
A method of making two components as a hinged assembly comprising the steps of feeding separate strips of work stock intermittently and simultaneously into opposite portions of a phased die and operating the phased die to simultaneously form both strips and thereby press-forming two, co-planar, oppositely directed lugs on one piece of work stock, press-forming two parallel spaced apart co-directed lugs on the other piece of work stock, press-forming a clearance hole in each of two of said four lugs, press-forming a protrusion on each of the other two of said four lugs, press-forming said co-planar, oppositely directed lugs into a U-shape, then press-folding said co-directed lugs towards each other to embrace said U-shaped lugs, said protrusions being disposed in a direction so that by said folding step said protrusions are engaged respectively into associated said clearance holes, and then press-severing each of the formed portions of the assembly from the work stock to produce two components hingedly connected together with the two clearance holes and two protrusions co-axial on the hinge axis.
Claim 3
Dependent Claim
22 words
A method as defined in claim 1 wherein the final operation hingedly connects and severs the two components from said separate strips.
Claim 4
Dependent Claim
23 words
A method as defined in claim 1 wherein the two components are the base plate and lever portion of a toggle latch respectively.
Claim 5
Dependent Claim
13 words
A method as defined in claim 1 wherein said protrusions are punch-formed extrusions.
Claim 6
Dependent Claim
53 words
A method of making two components hinged together as defined in claim 1, wherein: each component has a set of two lugs; in one set of two lugs, each lug has a said clearance hole formed therein; and in the other set of two lugs, each lug has a said protrusion formed thereon.
Claim 7
Dependent Claim
48 words
A method of making two components hinged together as defined in claim 1, wherein: for the two lugs on said one component, each lug has a said protrusion formed thereon; and for the two lugs on said other component, each lug has a said clearance hole formed therein.
References Cited (Backward Citations)
US834635A
Cited
US1494456A
Cited
US1584040A
Cited
US1753216A
Cited
US2213448A
Cited
US2233351A
Cited
US3447198A
Cited
DE2154562A1
Cited
DE2448689A1
Cited
US4283811A
Cited
DE2916560A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-04 | 1988-06-04 | 1988-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-04 | 1992-06-04 | 1992-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-04 | 1996-06-04 | 1996-12-04 | $7700.00 | Window Closed / Lapsed |