US3798710A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet metal panel fastener
Assignee: Individual
•
Filing: 1973-02-09
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Granted: 1974-03-26
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Expires: 1993-02-09
Abstract
Abstract A sheet metal fastener for securing panels, especially of insulation material, to a supporting structure is formed in two parts, one part having a clip to secure to the supporting structure and a prong to penetrate the panel and pass through the second part, the other part being substantially washer-like with a pair of tongues slotted to receive the prong. The prong has teeth to engage the ends of the slot in the tongues, preventing withdrawal of the tongues through the washer-like part, and is bent over the second part to secure the two parts to the panel. The tongues are formed by slitting the sheet material of the second part and the material adjacent the slits may be upset to prevent the tongues being forced through the space in the washerlike part.
Inventors
- 👤 G Tinnerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:01
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/36; E04D3/3601; E04F; E04F13/00; E04F13/07; E04F13/08; E04F13/0801; E04F13/0803; E04F13/081; E04F13/0814; Y; Y10; Y10S; Y10S411/00; Y10S411/918; Y10T; Y10T24/00; Y10T24/44; Y10T24/44017; Y10T24/46; Y10T24/4604; Y10T24/4605; Y10T24/4609; Y10T24/4621; Y10T24/49; Y10T24/492; Y10T24/493; Y10T24/495
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
165 words
A fastener of sheet metal having a base for positioning on one side of an article to be fastened, and having a prong projecting from said base to extend through said article, a second member for positioning on the opposite side of said base and formed for said prong to pass through, said second member having a pair of opposed tongues with their ends adjacent, said tongues having slots in their ends to form a complete slot through which said tongue can pass, the opposite edges of the outer portion of said prong having teeth to engage said tongues at the bases Of said slot, said outer portion of said prong being wider than the length of said complete slot so that said tongues are flexed outwardly from said article as said prong is forced through said slot, and said prong being bendable to be bent over against said second member to secure said second member against said article with said article between said members.
Claim 2
Dependent Claim
165 words
A fastener of sheet metal having a base for positioning on one side of an article to be fastened, and having a prong projecting from said base to extend through said article, a second member for positioning on the opposite side of said base and formed for said prong to pass through, said second member having a pair of opposed tongues with their ends adjacent, said tongues having slots in their ends to form a complete slot through which said tongue can pass, the opposite edges of the outer portion of said prong having teeth to engage said tongues at the bases Of said slot, said outer portion of said prong being wider than the length of said complete slot so that said tongues are flexed outwardly from said article as said prong is forced through said slot, and said prong being bendable to be bent over against said second member to secure said second member against said article with said article between said members.
Claim 3
Dependent Claim
24 words
A fastener as claimed in claim 1, in which said prong has shoulders inwardly of said outer portion against which said tongues may abut.
Claim 4
Dependent Claim
49 words
A fastener as claimed in claim 1, in which said tongues are formed by slitting the metal of said second member, and the edges of said slits adjacent said tongues are upset to narrow the distance between said edges and prevent said tongues being flexed into said second member.
Claim 5
Dependent Claim
190 words
A fastener of sheet metal comprising a base member for positioning on one side of a panel to be fastened and having clip means for securing to a support, a second member for positioning on the opposite side of said panel, said second member having a substantially flat area with a pair of opposed tongues having their ends adjacent and having notches extending from said ends to form a complete slot, said base member having a prong extending outwardly with an outer portion having a tapered end for piercing a panel and teeth on opposite edges adjacent said end to engage the edges of said tongues at the ends of said slot, said prong being wider between said teeth than the length of said slot so that said tongues are flexed outwardly as said prong is passed through said second member, the portion of said prong between said outer portion and said base being wider to provide shoulders against which said tongues may abut, said outer portion of said prong being bendable over against said second member to secure said two members together more firmly with said panel between them.
Claim 6
Dependent Claim
190 words
A fastener of sheet metal comprising a base member for positioning on one side of a panel to be fastened and having clip means for securing to a support, a second member for positioning on the opposite side of said panel, said second member having a substantially flat area with a pair of opposed tongues having their ends adjacent and having notches extending from said ends to form a complete slot, said base member having a prong extending outwardly with an outer portion having a tapered end for piercing a panel and teeth on opposite edges adjacent said end to engage the edges of said tongues at the ends of said slot, said prong being wider between said teeth than the length of said slot so that said tongues are flexed outwardly as said prong is passed through said second member, the portion of said prong between said outer portion and said base being wider to provide shoulders against which said tongues may abut, said outer portion of said prong being bendable over against said second member to secure said two members together more firmly with said panel between them.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |