§
Luxuse
Patent Intelligence
Sign In
Patent US3574510A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3574510A Expired / Lapsed US ⏱️ 0.0 years remaining

Concealed means for joining abutting elements

Assignee: Individual
•
Filing: 1969-03-05
•
Granted: 1971-04-13
•
Expires: 1989-03-05
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A concealed means for joining two abutting elements. The first element has at least an engaging surface and an access surface oriented angularly with respect to the engaging surface. An anchor means is secured within the engaging surface such that the axis thereof extends outwardly from the engaging surface. The second element also has an engaging surface that can be abutted to the engaging surface of the first element. The first element has an ingressive passage that opens through its access surface and communicates with the anchor means. The ingressive passage is oriented obliquely to the axis of the anchor means, and the actual fastening of the first and second elements is achieved by a screw means that extends through the anchor means of the first element and penetrates the engaging surface of the second element. Tightening and loosening the screw means is accomplished by driving means having a flexible shaft for negotiating the oblique intersection of the ingressive passage with the axis of the anchor means and for permitting actuation of the screw means by rotation of the shaft from exteriorly of the first element.

Inventors

  • 👤 Patricio Herman

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-07 22:40
CPC Classifications
B; B25; B25B; B25B15/00; B25B15/02; B25B13/00; B25B13/48; B25B13/481; F; F16; F16B; F16B12/00; F16B12/10; F16B12/12; F16B12/14

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 180 words
Concealed means for joining two abutting elements, the first said element having an engaging surface and an access surface oriented angularly with respect thereto, the second element having an engaging surface for abutting the engaging surface of said first element, said concealed joining means comprising, an anchor cavity concealed from said access surface and opening through the engaging surface of said first member, anchor means secured within said anchor cavity, screw means extending through said anchor means for penetration of the engaging surface on said second element, a guide bore also concealed from said access surface and forming an extension of said anchor cavity that extends inwardly of said first member with respect to the engaging surface thereof, said first element having an ingressive passage in the form of a straight bore presenting opposed ends, one end opening through the access surface, said ingressive passage oriented obliquely with respect to, and with the opposite end opening into, said guide bore to permit insertion of a flexible driving means through said ingressive passage and guide bore to operate the screw means.
Claim 2
Dependent Claim 180 words
Concealed means for joining two abutting elements, the first said element having an engaging surface and an access surface oriented angularly with respect thereto, the second element having an engaging surface for abutting the engaging surface of said first element, said concealed joining means comprising, an anchor cavity concealed from said access surface and opening through the engaging surface of said first member, anchor means secured within said anchor cavity, screw means extending through said anchor means for penetration of the engaging surface on said second element, a guide bore also concealed from said access surface and forming an extension of said anchor cavity that extends inwardly of said first member with respect to the engaging surface thereof, said first element having an ingressive passage in the form of a straight bore presenting opposed ends, one end opening through the access surface, said ingressive passage oriented obliquely with respect to, and with the opposite end opening into, said guide bore to permit insertion of a flexible driving means through said ingressive passage and guide bore to operate the screw means.
Claim 3
Dependent Claim 33 words
A concealed means for joining two abutting elements as set forth in claim 1, in which the axis of said anchor means extends generally perpendicularly from the engaging surface of the first element.
Claim 4
Dependent Claim 33 words
A concealed means for joining two abutting elements, as set forth in claim 1, in which the anchor means comprises, a dowel secured in said anchor cavity, the screw means piercing said dowel.
Claim 5
Dependent Claim 22 words
A concealed means for joining two abutting elements, as set forth in claim 4, in which a starting aperture pierces said dowel.
Claim 6
Dependent Claim 32 words
A concealed means for joining two abutting elements, as set forth in claim 4, in which a plug is received within said ingressive passage to obscurate the opening through said access surface.

References Cited (Backward Citations)

FR901416A Cited
CH365506A Cited
US3312139A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-04-12 1974-10-12 1975-04-13 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-04-12 1978-10-12 1979-04-13 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-04-12 1982-10-12 1983-04-13 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag