US3840243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collapsible utility cart
Assignee: Cumberland Corp
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Filing: 1973-01-15
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Granted: 1974-10-08
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Expires: 1993-01-15
Abstract
Abstract A movable carrier for articles such as milk or ice cream cartons having a back frame member and two side frame members constructed of tubular elements, a rigid base frame assembly which directly mounts suitable wheels or casters adjacent each corner of the carrier. The base frame assembly construction utilizes angle plates which are each connected by welding to the respective back or side frame member with which it is associated so as to form a strong integral frame unit having a high resistance to distortion and deformation from forces transmitted through or by the rollers or casters. The carrier includes one or more shelf members and the side frame members and shelf members can be pivotally connected to the back frame member so that when the carrier is not being used for supporting articles, it can be collapsed to a compact condition by pivoting or folding the shelves and side assemblies toward the back frame assembly.
Inventors
- 👤 V Rheinhart
- 👤 D Camp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:11
CPC Classifications
B; B62; B62B; B62B3/00; B62B3/002; B62B3/02; B62B3/025; B62B3/14; B62B3/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
369 words
A carrier comprising: a vertical back member, a pair of vertical side members, a plurality of shelves, means for pivotably mounting each of said side members on one end of said back member so that each of said side members is pivotable about a substantially vertical axis between a carrying position extending outward from and substantially perpendicular to said back member and a storage position extending roughly parallel to and adjacent said vertical back member, means for pivotably mounting said shelves on said back member so that each of said shelves is pivotable about a substantially horizontal axis between a carrying position extending substantially horizontally, and outward from said back member to engage said side members for supporting goods or the like and a storage position extending substantially vertical and adjacent said back member, a pair of front roller assemblies each including a roller and a front roller mounting plate having an extending surface, a pair of rear roller assemblies each including a roller and a rear roller mounting plate having an extending surface, a pair of front bottom brackets each having an L-shaped cross section and each extending along the bottom of one of said side members and having one side welded at a plurality of locations to the side member along which it extends to form an integral unit and the other side of each providing at the front of each side member an extending surface having a tapering portion extending from its widest cross section at its connection to said roller assembly to its narrowest cross section at the rear portion of said side member, means for connecting said front mounting plates to said bottom brackets respectively so that said extending surfaces of said front mounting plates are substantially covered by said extending surfaces of said bottom brackets, a rear bottom bracket extending along the bottom of said back member and connected to the back member to form an integral unit and providing at both ends a rear extending surface, and means for connecting said rear mounting plates to said rear bottom bracket so that said extending surfaces of said rear mounting plates are substantially covered by said rear extending surfaces of said rear bottom bracket.
Claim 2
Dependent Claim
369 words
A carrier comprising: a vertical back member, a pair of vertical side members, a plurality of shelves, means for pivotably mounting each of said side members on one end of said back member so that each of said side members is pivotable about a substantially vertical axis between a carrying position extending outward from and substantially perpendicular to said back member and a storage position extending roughly parallel to and adjacent said vertical back member, means for pivotably mounting said shelves on said back member so that each of said shelves is pivotable about a substantially horizontal axis between a carrying position extending substantially horizontally, and outward from said back member to engage said side members for supporting goods or the like and a storage position extending substantially vertical and adjacent said back member, a pair of front roller assemblies each including a roller and a front roller mounting plate having an extending surface, a pair of rear roller assemblies each including a roller and a rear roller mounting plate having an extending surface, a pair of front bottom brackets each having an L-shaped cross section and each extending along the bottom of one of said side members and having one side welded at a plurality of locations to the side member along which it extends to form an integral unit and the other side of each providing at the front of each side member an extending surface having a tapering portion extending from its widest cross section at its connection to said roller assembly to its narrowest cross section at the rear portion of said side member, means for connecting said front mounting plates to said bottom brackets respectively so that said extending surfaces of said front mounting plates are substantially covered by said extending surfaces of said bottom brackets, a rear bottom bracket extending along the bottom of said back member and connected to the back member to form an integral unit and providing at both ends a rear extending surface, and means for connecting said rear mounting plates to said rear bottom bracket so that said extending surfaces of said rear mounting plates are substantially covered by said rear extending surfaces of said rear bottom bracket.
Claim 3
Dependent Claim
41 words
A carrier as defined in claim 1 wherein each of said side members is constructed from a series of tubular metal bars having portions extending in the vertical direction and ridigly secured at their bottom portions to said front bottom brackets.
Claim 4
Dependent Claim
41 words
A carrier as defined in claim 1 wherein said back bottom bracket has an L-shaped cross-section having one side welded in a plurality of locations to said bottom portion of said back member, and another side defining said rear extending surfaces.
Claim 5
Dependent Claim
17 words
A carrier as defined in claim 1 wherein said connecting means include a plurality of separated bolts.
Claim 6
Dependent Claim
39 words
A carrier as in claim 1 wherein side member mounting means include members at either end of said rear bottom bracket extending outward from and roughly perpendicular to said rear bottom bracket for pivotable attachment to said side members.
Claim 7
Dependent Claim
45 words
A carrier as in claim 5 wherein said members of said side member mounting means on one side of said back member extend further than the members on the other side so that said side members in said storage position will fit inside each other.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |