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US3837136A Expired / Lapsed US ⏱️ 0.0 years remaining

Devices for connecting two plates

Assignee: SWISSLOK CO
•
Filing: 1972-07-19
•
Granted: 1974-09-24
•
Expires: 1992-07-19
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Abstract

Abstract A device for connecting two plates in substantially perpendicular relationship comprises a shank and a head. The shank is intended to be inserted into an opening in a first plate and the head acts to limit the insertion of the device into the opening. The shank is provided with a slot which is adapted to receive a marginal portion of a second plate. The slot is widened in the vicinity of its base and the base is spaced from the head so that upon the maximum insertion of the shank in the opening to correspond to an abutment position of the head and the first plate and an abutment position of two plates, the portion of the second plate received in the slot will be locally deformed in the area of the base to increase its lateral dimension and thereby connect the two plates. The devices are stamped or blanked from flat strip stock. In one enbodiment, the device is a flat piece which is accommodated by a rectangular opening. In another embodiment, a pair of parallel shanks are connected to one another to double the holding strength of the device. In addition, round or circular openings may be provided in the plate through which the shanks of the devices are inserted.

Inventors

  • 👤 F Graham
  • 👤 M Bryceland

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 19:45
CPC Classifications
A; A47; A47B; A47B57/00; A47B57/58; F; F16; F16B; F16B5/00; F16B5/06; F16B5/0607; F16B5/0614; F16B2200/00; F16B2200/40; F16B2200/67; Y; Y10; Y10T; Y10T403/00; Y10T403/46

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 171 words
A device for connecting two plates comprising a shank adapted to be inserted into an opening in a first plate and a head adapted to limit the insertion of the shank into the opening, the shank and head being integrally formed from flat strip stock, a slot in the shank adapted to receive a marginal portion of a second plate, the slot having parallel surfaces adapted to laterally support the marginal portion of the second plate in said slot and being widened in the vicinity of its base, the base of the slot being spaced from the head a distance greater than the thickness of the first plate and the device being of a hardness whereby upon the maximum insertion of the shank in the opening corresponding to an abutment position of the head and the first plate and an abutment position of the two plates, the portion of the second plate received in the slot will be locally deformed in the area of the base to increase its lateral dimension.
Claim 2
Independent Claim 171 words
A device for connecting two plates comprising a shank adapted to be inserted into an opening in a first plate and a head adapted to limit the insertion of the shank into the opening, the shank and head being integrally formed from flat strip stock, a slot in the shank adapted to receive a marginal portion of a second plate, the slot having parallel surfaces adapted to laterally support the marginal portion of the second plate in said slot and being widened in the vicinity of its base, the base of the slot being spaced from the head a distance greater than the thickness of the first plate and the device being of a hardness whereby upon the maximum insertion of the shank in the opening corresponding to an abutment position of the head and the first plate and an abutment position of the two plates, the portion of the second plate received in the slot will be locally deformed in the area of the base to increase its lateral dimension.
Claim 3
Dependent Claim 34 words
A device according to claim 1, wherein the head comprises a projection extending laterally from each side of the shank, and the head has a dimension substantially equal to the thickness of the shank.
Claim 4
Dependent Claim 31 words
A device according to claim 2, wherein opposite faces of the shank are substantially parallel and the head has opposite sides which lie substantially in the same planes as said faces.
Claim 5
Dependent Claim 56 words
A device according to claim 1, wherein a second shank is integrally connected to the first named shank by a bridging portion, the shanks extending from the same side of the bridging portion, the second shank being similarly slotted with the slot widened in the vicinity of the base and the base spaced from the head.
Claim 6
Dependent Claim 15 words
A device according to claim 4, wherein the shanks are in spaced, substantially parallel relationship.
Claim 7
Dependent Claim 31 words
A device according to claim 5, wherein the head comprises a lateral extension at each side of the bridging portion to provide a projection at opposite sides of the connected shanks.
Claim 8
Dependent Claim 25 words
A device according to claim 6, wherein the thickness of each of the shanks of the bridging portion and of the extensions are substantially equal.

References Cited (Backward Citations)

US2386887A Cited
US2576396A Cited
US3390856A Cited
US3511525A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-09-23 1978-03-25 1978-09-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-09-23 1982-03-25 1982-09-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-09-23 1986-03-25 1986-09-24 $7700.00 Window Closed / Lapsed

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