US3813735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap-on attachment for utility service trailers and the like
Assignee: Reedrill Inc
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Filing: 1972-07-03
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Granted: 1974-06-04
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Expires: 1992-07-03
Abstract
Abstract A plurality of spaced keyhole slots facing in the same direction are provided in one member, and the other member to be attached thereto is provided with correspondingly spaced and positioned headed projections adapted to be received through the larger portion of the slots and to interlock with said first member upon relative shifting between the members in a direction moving the headed projections into the smaller portions of the slots. A spring biased interlock retains the members against dislodgement of the projections from the slots until released.
Inventors
- 👤 W Thiermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:15
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/09; B; B60; B60D; B60D1/00; B60D1/24; B60D1/42; B60D1/46; B60P; B60P3/00; B60P3/40; B60P3/41; B62; B62D; B62D63/00; B62D63/06; F16B41/00; F16B41/002; F16B2200/00; F16B2200/69; Y; Y10; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45471; Y10T24/45513; Y10T24/45518; Y10T403/00; Y10T403/71; Y10T403/7123
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
153 words
In a device of the class described, a side wall member having at least one keyhole slot therein, a backing member spaced behind said side wall member and having a small hole therethrough behind the smaller end of said slot, an operable member adapted to be secured to said wall member and having a projection of a size generally fitting the small end of said slot, a head upon the end of said projection adapted to enter through the larger end portion of said slot and to interlock behind said wall member in the space between said wall member and said backing member when the operative member is shifted to move the projection thereon into the smaller end portion of the slot, and pin means extending axially through said projection and the head thereon into said small hole in said backing member to lock said operable member against release from said wall member.
Claim 2
Dependent Claim
153 words
In a device of the class described, a side wall member having at least one keyhole slot therein, a backing member spaced behind said side wall member and having a small hole therethrough behind the smaller end of said slot, an operable member adapted to be secured to said wall member and having a projection of a size generally fitting the small end of said slot, a head upon the end of said projection adapted to enter through the larger end portion of said slot and to interlock behind said wall member in the space between said wall member and said backing member when the operative member is shifted to move the projection thereon into the smaller end portion of the slot, and pin means extending axially through said projection and the head thereon into said small hole in said backing member to lock said operable member against release from said wall member.
Claim 3
Dependent Claim
24 words
The construction of claim 1 and spring means carried by said operable member to bias said pin into interlocking relationship with said backing member.
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) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |