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US4078716A Expired / Lapsed US ⏱️ 0.0 years remaining

Vegetable trays

Assignee: ITW Ltd
•
Filing: 1977-07-07
•
Granted: 1978-03-14
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Expires: 1997-07-07
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Abstract

Abstract The invention concerns corner posts for use with card blanks to form stacking trays, especially suited to transporting garden produce. Corner posts of the invention are elongated elements of substantially right triangular cross-sectional shape having a widest face and two narrower faces, said widest face being formed with two longitudinally extending slots, said slots each having two parallel sides and a base and opening onto said widest face, said sides of one of said slots extending in planes perpendicular to said sides of the other of said slots, and each of said slots having an abutment surface extending in a plane at right angles to said sides and said base and constituting an end to said respective slot, each slot further including an undercut adjacent its said opening to provide a shoulder facing said base of said slot, said slot having a width substantially twice that of said opening of said slot at points between said shoulder and said base. Corner posts of the invention may be formed with end portions adapted to locate two like posts in axial alignment, so that the trays may be stacked up.

Inventors

  • 👤 David N. Harley
  • 👤 John P. Palmer

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 16:08
CPC Classifications
B; B65; B65D; B65D5/00; B65D5/001; B65D5/005; B65D5/006; Y; Y10; Y10T; Y10T24/00; Y10T24/34; Y10T24/3427; Y10T24/3439; Y10T24/344

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 148 words
A corner post for use in a stacking tray, said post being an elongated element of substantially right triangular cross-sectional shape having a widest face and two narrower faces, said widest face being formed with two longitudinally extending slots, said slots each having two parallel sides and a base and opening onto said widest face, said sides of one of said slots extending in planes perpendicular to said sides of the other of said slots, and each of said slots having an abutment surface extending in a plane at right angles to said sides and said base and constituting an end to said respective slot, each slot further including an undercut adjacent its said opening to provide a longitudinal shoulder facing said base of said slot, said slot having a width substantially twice that of said opening of said slot at points between said shoulder and said base.
Claim 2
Dependent Claim 148 words
A corner post for use in a stacking tray, said post being an elongated element of substantially right triangular cross-sectional shape having a widest face and two narrower faces, said widest face being formed with two longitudinally extending slots, said slots each having two parallel sides and a base and opening onto said widest face, said sides of one of said slots extending in planes perpendicular to said sides of the other of said slots, and each of said slots having an abutment surface extending in a plane at right angles to said sides and said base and constituting an end to said respective slot, each slot further including an undercut adjacent its said opening to provide a longitudinal shoulder facing said base of said slot, said slot having a width substantially twice that of said opening of said slot at points between said shoulder and said base.
Claim 3
Dependent Claim 42 words
A corner post according to claim 1, wherein one end of said post is formed with a support portion adapted to engage the other end of a second, identical, corner post to locate said post and said second post in axial alignment.
Claim 4
Dependent Claim 13 words
A corner post according to claim 2, wherein said abutment surfaces are coplanar.
Claim 5
Dependent Claim 20 words
A corner post according to claim 3, wherein said abutment surfaces are situated intermediate the length of said corner post.
Claim 6
Dependent Claim 20 words
A corner post according to claim 3, wherein said abutment surfaces are situated at one end of said corner post.
Claim 7
Dependent Claim 41 words
A corner post according to claim 1, wherein each said shoulder is formed with a tongue extending from the edge of said shoulder towards said base of each of said slots, said tongues dividing said slots each into two communicating sections.

References Cited (Backward Citations)

US236710A Cited
US254115A Cited
US2379179A Cited
US2961139A Cited
US3226008A Cited
US3220633A Cited
US3223309A Cited
NL6414084A Cited
FR1436626A Cited
US3760465A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-03-13 1981-09-12 1982-03-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-03-13 1985-09-12 1986-03-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-03-13 1989-09-12 1990-03-14 $7700.00 Window Closed / Lapsed

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