Patent US3796410A successfully refreshed from Google Patents.
US3796410A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Guiderail for storage racks
Assignee: SPEEDRACK PRODUCTS GROUP Ltd
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Filing: 1972-06-22
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Granted: 1974-03-12
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Expires: 1992-06-22
Abstract
Abstract A deflectable guiderail adapted for positioning at the end of a rack aisle to restrain handling equipment from damaging a rack upon such equipment entering or exiting the aisle.
Inventors
- 👤 A Konstant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:33
CPC Classifications
E; E01; E01F; E01F15/00; E01F15/14; E01F15/141; B; B65; B65G; B65G1/00; B65G1/02; B65G2207/00; B65G2207/40
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
134 words
A guardrail assembly adapted to be mounted on a horizontal supporting surface, said guardrail assembly comprising a base adapted to be fixed to the horizontal supporting surface having upstanding rigid bracket means mounted thereon, elongated horizontally extending leaf spring means of curb height supported at its one end by said upstanding bracket and adapted to permit horizontal swinging movement of the remainder thereof in a rearward direction, said leaf spring means being constructed to resist swinging movement in said rearward direction with increasing force, and rigid abutment means fixedly connected to said base engageable by said leaf spring means intermediate its ends after limited swinging movement thereof in said rearward direcion so as to cause said intermediate portion of said leaf spring means to define a rigid curb when in engagement with said abutment.
Claim 2
Dependent Claim
134 words
A guardrail assembly adapted to be mounted on a horizontal supporting surface, said guardrail assembly comprising a base adapted to be fixed to the horizontal supporting surface having upstanding rigid bracket means mounted thereon, elongated horizontally extending leaf spring means of curb height supported at its one end by said upstanding bracket and adapted to permit horizontal swinging movement of the remainder thereof in a rearward direction, said leaf spring means being constructed to resist swinging movement in said rearward direction with increasing force, and rigid abutment means fixedly connected to said base engageable by said leaf spring means intermediate its ends after limited swinging movement thereof in said rearward direcion so as to cause said intermediate portion of said leaf spring means to define a rigid curb when in engagement with said abutment.
Claim 3
Dependent Claim
29 words
A guardrail assembly in accordance with claim 1 wherein the opposite end portion of said leaf spring means is free and is curved in plan in said rearward direction.
Claim 4
Dependent Claim
28 words
A guardrail assembly in accordance with claim 2, wherein said bracket is in surface contact over a substantial distance with the rearward surface of said leaf spring means.
Claim 5
Dependent Claim
30 words
A guardrail assembly in accordance with claim 2 wherein means is included extending generally rearward from said abutment and opposing displacement of said base upward from the horizontal supporting surface.
Claim 6
Dependent Claim
26 words
A guardrail assembly in accordance with claim 4 wherein said displacement-opposing means includes a vertical plate portion rigidly attached to and extending rearward from said abutment.
Claim 7
Dependent Claim
48 words
A guardrail assembly in accordance with claim 5 wherein said vertical plate portion is located so as to block further deflection of said curved end portion of said leaf spring means after said end portion deflects a predetermined amount following engagement between said abutment and said intermediate portion.
Claim 8
Dependent Claim
122 words
A guardrail assembly adapted to be mounted on a horizontal supporting surface, said guardrail assembly comprising a base adapted to be fixed to the horizontal supporting surface having an upstanding rigid bracket mounted thereon, an elongated horizontally extending leaf spring of curb height supported at its one end by said upstanding bracket, the opposite end portion of said leaf spring being free to allow horizontal swinging movement thereof in a rearward direction, and rigid abutment means fixedly connected to said bracket means engageable by said leaf spring intermediate its ends after limited swinging movement thereof in said rearward direction so as to cause said intermediate portion of said leaf spring to act as a rigid curb when in engagement with said abutment.
Claim 9
Dependent Claim
122 words
A guardrail assembly adapted to be mounted on a horizontal supporting surface, said guardrail assembly comprising a base adapted to be fixed to the horizontal supporting surface having an upstanding rigid bracket mounted thereon, an elongated horizontally extending leaf spring of curb height supported at its one end by said upstanding bracket, the opposite end portion of said leaf spring being free to allow horizontal swinging movement thereof in a rearward direction, and rigid abutment means fixedly connected to said bracket means engageable by said leaf spring intermediate its ends after limited swinging movement thereof in said rearward direction so as to cause said intermediate portion of said leaf spring to act as a rigid curb when in engagement with said abutment.
Claim 10
Dependent Claim
48 words
A guardrail assembly in accordance with claim 7, wherein upstanding second abutment means is included disposed generally adjacent the free end portion of said leaf spring and blocking such contact by a lift truck with said end portion that would deflect said leaf spring in a forward direction.
Claim 11
Dependent Claim
33 words
A guardrail assembly in accordance with claim 8 wherein a vertical stiffener portion rigidly attached to said abutment extending generally rearward therefrom opposes displacement of said base upward from The horizontal supporting surface.
Claim 12
Dependent Claim
47 words
A guardrail assembly in accordance with claim 9 wherein said vertical stiffener portion is located so as to block further deflection of said curved end portion of said leaf spring after said end portion deflects a predetermined amount following engagement between said abutment and said intermediate portion.
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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) | 1977-03-11 | 1977-09-10 | 1978-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-11 | 1981-09-10 | 1982-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-11 | 1985-09-10 | 1986-03-12 | $7700.00 | Window Closed / Lapsed |