Patent US3688550A successfully refreshed from Google Patents.
US3688550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crushing and bending of sections of members
Assignee: Individual
•
Filing: 1970-01-06
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Granted: 1972-09-05
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Expires: 1990-01-06
Abstract
Abstract A method of crushing and bending an end section or an intermediate section of a tube comprises placing in a cradle of a die of a press a part of the tube including the section, and moving a punch of the press towards the die such that the section and the remainder of the tube part are bent one relatively to the other and one wall portion of the section is crushed inwardly towards a diametrically opposite wall portion of the section. The tube having a section so crushed and bent can be connected to another tube, for example, by disposing the section face-to-face with a complementarily shaped portion of the other tube such that the remainder of the part extends away from the latter portion, and then, for example, welding or bolting the section to the other tube.
Inventors
- 👤 Kenneth Ernest Stanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:50
CPC Classifications
E; E04; E04B; E04B1/00; E04B1/38; E04B1/58; E04B1/5825; E04B1/5837; B; B21; B21D; B21D39/00; B21D39/04; B21D39/044; E04B1/18; E04B1/19; E04B1/24; E04B1/2403; E04G; E04G7/00; E04G7/02; F; F16; F16B; F16B7/00; E04B1/5843; E04B1/585; E04B2001/1924; E04B2001/1927; E04B2001/193; E04B2001/1951; E04B2001/1957; E04B2001/1963; E04B2001/1975; E04B2001/2409; E04B2001/2439; E04B2001/2466; E04B2001/2472; E04B1/388; E04B2001/389; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49616
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
110 words
A method of crushing and bending a section of a tube comprising placing in a die of a press a part of said tube including said section, and moving one of said die and a punch of said press towards the other to crush one wall portion of said section inwardly towards a diametrically opposite wall portion of said section so that said section acquires a double-walled channel form extending along said section and to bend said section and the remainder of said part one relative to the other so that said remainder extends from the base of said channel in a direction away from the mouth of said channel.
Claim 2
Independent Claim
110 words
A method of crushing and bending a section of a tube comprising placing in a die of a press a part of said tube including said section, and moving one of said die and a punch of said press towards the other to crush one wall portion of said section inwardly towards a diametrically opposite wall portion of said section so that said section acquires a double-walled channel form extending along said section and to bend said section and the remainder of said part one relative to the other so that said remainder extends from the base of said channel in a direction away from the mouth of said channel.
Claim 3
Dependent Claim
34 words
A method according to claim 1, wherein after the crushing, each of said one wall portion and said opposite wall portion is of a cross-sectional shape of substantially the form of a circular arc.
Claim 4
Dependent Claim
29 words
A method according to claim 1, wherein after the crushing, each of said one wall portion and said opposite wall portion is of substantially constant cross-section throughout its length.
Claim 5
Dependent Claim
108 words
A method according to claim 1, wherein said part and said section are an end part and an end section, respectively, and said end part is placed in said die such that said end part overlaps a recess in said die and that said end section lies substantially directly between said recess and said punch, and one of said die and said punch is moved towards the other such that said punch penetrates said recess and in so doing bends said end section, relatively to said remainder, into a position against a suitably shaped wall of said recess and simultaneously crushes said end section radially against said wall.
Claim 6
Dependent Claim
28 words
A method according to claim 4, wherein said wall of said recess is concave, and said punch has a convex face which crushes said section against said wall.
Claim 7
Dependent Claim
58 words
A method according to claim 5, wherein said face and said wall are each asymmetrical throughout their lengths with respect to a plane extending in said direction and containing the longitudinal axis of said part when placed in said die, whereby said section after crushing and bending has its longitudinal central plane oblique to that of said remainder.
Claim 8
Dependent Claim
79 words
A method according to claim 4, wherein said part is placed in said die such that it is supported by a cradle of said die, said cradle extending transverse to the direction of movement of said one of said punch and said die towards the other, and said wall extending in a plane which extends in said direction and passes through said cradle, and away from a position occupied by said punch immediately prior to the crushing and bending.
Claim 9
Dependent Claim
13 words
A method according to claim 7, wherein said wall extends in said direction.
Claim 10
Dependent Claim
31 words
A method according to claim 7, wherein said punch and said die are so shaped that, simultaneously with the crushing and bending of said section, said section is formed with turned-back
Claim 11
Dependent Claim
105 words
A method according to claim 1, wherein said section is an intermediate section of said tube, and said part is placed in said die such that said part extends across a recess in said die and that said section lies substantially directly between said recess and said punch, and one of said die and said punch is moved one towards the other such that said punch penetrates said recess and in so doing displaces said section into a position against a suitably shaped wall of said recess and simultaneously therewith bends said remainder relatively to said section and crushes said section radially against said wall.
Claim 12
Dependent Claim
28 words
A method according to claim 10, wherein said wall of said recess is convex, and said punch has a concave face which crushes said section against said wall.
Claim 13
Dependent Claim
58 words
A method according to claim 10, wherein said part is placed in said die such that it has two end sections supported by respective cradles, said wall and said cradle extending in approximately the same direction as one another and transversely to the direction of movement of said one of said punch and said die towards the other.
Claim 14
Dependent Claim
24 words
A method according to claim 12, wherein said two end sections swing out of the cradles towards said punch during the crushing and bending.
Claim 15
Dependent Claim
19 words
A method according to claim 12, wherein said wall and said cradles extend perpendicularly to said direction of movement.
Claim 16
Dependent Claim
36 words
A method according to claim 1, wherein the crushing and bending of said section is accompanied by the crushing of one wall portion of said remainder inwardly towards a diametrically opposite wall portion of said remainder.
Claim 17
Dependent Claim
41 words
A method according to claim 1, and preceded by inserting within said section a section of a second tube, the crushing and bending of the first-mentioned section being accompanied by corresponding crushing and bending of said section of said second tube.
Claim 18
Dependent Claim
24 words
A method according to claim 1, wherein said punch comprises a rolling member arranged to roll on said section during the crushing and bending.
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) | 1975-09-05 | 1976-03-06 | 1976-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-05 | 1980-03-06 | 1980-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-05 | 1984-03-06 | 1984-09-05 | $7700.00 | Window Closed / Lapsed |