Patent US3917213A successfully refreshed from Google Patents.
US3917213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable tiedown device
Assignee: H Koch and Sons Co
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Filing: 1974-06-03
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Granted: 1975-11-04
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Expires: 1994-06-03
Abstract
Abstract The herein Tiedown Device includes an anchor stud which is particularly adapted for anchoring a serving cart, for instance, in an aircraft; the anchor stud is of substantially ''''T'''' shaped cross section which has a hollow stem and a head so that certain spaced anchor members on a cart can ride under and engage the head and thereby anchor the cart in position; a housing is secured in the floor, and a block is held in place by a diametrical crosspin; the hollow stem slides between the periphery of the block and the inner periphery of the housing and has therein a pair of longitudinal slots which ride on the crosspin; suitable stop is provided for limiting the outward movement of the hollow stem, thereby predetermining the distance to which the head of the anchor stud projects above the housing; a coil spring between the block and a shoulder in the hollow stem urges the hollow stem outwardly of the housing; a catch is spring-pressed into position to engage the crosspin to hold the stud in retracted position; and means are provided in the head of the anchor stud whereby the catch can be released from the crosspin at will so as to allow the coil spring to move the anchor stud out of the housing into anchoring position.
Inventors
- 👤 Paul W Poehlmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:04
CPC Classifications
B; B60; B60P; B60P7/00; B60P7/06; B60P7/08; B60P7/0807
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
230 words
In a tiedown device, an anchor stud having a head and a hollow stem, said head being adapted to be engaged by a member to be tied down, a housing, a backing member in said hollow stem, securing means to seecure said backing member to said housing so that said backing member is spaced from said housing and said hollow stem is movable between said backing member and said housing, coacting guide means between said stem and said securing means to guide said stem in axial movement relatively to said housing, resilient means bearing against said backing member and against said stem to urge said anchor stud outwardly from said housing, means to limit the axial outward movement of said anchor stud, thereby to predetermine the position of said head for engagement by the member to be tied down, releasable means to lock said anchor stud in retracted position in said housing, and means to release said releasable locking means at will, said resilient means being a spring located within said hollow stem, said securing means including a securing element extended across said housing in engagement with said backing member and being secured to said housing, said coacting guide means including guide slots in said hollow stem riding over said securing element between said backing member and said housing during movement of the stem into and out of said housing.
Claim 2
Dependent Claim
230 words
In a tiedown device, an anchor stud having a head and a hollow stem, said head being adapted to be engaged by a member to be tied down, a housing, a backing member in said hollow stem, securing means to seecure said backing member to said housing so that said backing member is spaced from said housing and said hollow stem is movable between said backing member and said housing, coacting guide means between said stem and said securing means to guide said stem in axial movement relatively to said housing, resilient means bearing against said backing member and against said stem to urge said anchor stud outwardly from said housing, means to limit the axial outward movement of said anchor stud, thereby to predetermine the position of said head for engagement by the member to be tied down, releasable means to lock said anchor stud in retracted position in said housing, and means to release said releasable locking means at will, said resilient means being a spring located within said hollow stem, said securing means including a securing element extended across said housing in engagement with said backing member and being secured to said housing, said coacting guide means including guide slots in said hollow stem riding over said securing element between said backing member and said housing during movement of the stem into and out of said housing.
Claim 3
Dependent Claim
40 words
The tiedown device specified in claim 1, and said releasable locking means including a hook member pivotally connected to said hollow stem and adapted to be hooked to said backing member thereby to hold said anchor stud in retracted position.
Claim 4
Dependent Claim
48 words
The tiedown device specified in claim 2, and said releasing means including a movable element mounted on said head, and connecting means to connect said movable element to said hook for moving said hook out of engagement from said backing member upon the movement of said movable element.
Claim 5
Dependent Claim
42 words
The tiedown device specified in claim 2, and said releasing means including an arm on said pivoted hook, and a device in said head accessible for exerting force on said arm to turn said hook out of engagement from said backing member.
Claim 6
Dependent Claim
77 words
The tiedown device specified in claim 2, and said releasing means including an accessible lever pivoted in said head, and an abutment element on the pivoted end of said lever abutting against saiD pivoted hook so as to turn said hook out of engagement from said backing member when said lever is moved from an initial position into releasing position, and resilient means in said anchor stud to urge said hook into engagement with said backing member.
Claim 7
Dependent Claim
38 words
The tiedown device specified in claim 5, and said backing member having a cavity therein adjacent said securing element extended across said stem for accommodating said pivoted hook for engagement with said securing element in said backing member.
Claim 8
Dependent Claim
77 words
The tiedown device specified in claim 1, and said means to limit the axial outward movement of said anchor stud including a support axially adjustable in said housing between said stem and said housing, said securing means to secure said backing member being connected to said adjustable support so that said hollow stem is movable between said backing member and said adjustable support thereby to predetermine the released position of said anchor stud relatively to said housing.
Claim 9
Dependent Claim
54 words
The tiedown device specified in claim 2, and a sleeve axially adjustably secured to the inner periphery of said housing, said securing element being secured to said sleeve, and said hollow stem being slidable between said sleeve and said backing member thereby to adjust the position of said anchor stud relatively to said housing.
Claim 10
Dependent Claim
88 words
The tiedown device specified in claim 1, and said backing member being a block within said hollow stem, said housing including a sleeve threaded into said housing inwardly from the inner end thereof, said securing means to secure said backing member to said housing being a crosspin secured to said sleeve, said resilient means being a spring in said hollow stem between said block and said head, said coacting guide means including longitudinal slots in said hollow stem riding upon said pin between said block and said sleeve.
Claim 11
Dependent Claim
81 words
The tiedown device specified in claim 9, and said releasable locking means including a hook pivoted in said hollow stem, said crosspin extending through said block and said block having a cavity therein adjacent said crosspin to accommodate the engagement of said hook with said crosspin, a device accessible in said head and engageable with said hook so as to turn said hook out of engagement from said pin, and resilient means to urge said hook into engagement with said pin.
Claim 12
Dependent Claim
36 words
The tiedown specified in claim 9, and an outwardly extending flange on said sleeve, and adjustable limiting members extending from said housing towards said flange for limiting the adjustment of said sleeve outwardly of said housing.
Claim 13
Dependent Claim
66 words
The tiedown device specified in claim 8, and said device in said head including a pivoted lever, an abutment on the pivoted end of said lever, said hook having a crank arm in engagement with said abutment whereby when said lever is moved from its initial position into releasing position said abutment bears on said arm for turning said hook out of engagement from said pin.
Claim 14
Dependent Claim
82 words
The tiedown device specified in claim 1, and said resilient means being a torsion spring anchored within said hollow stem on said backing member, and being biased for urging the turning of the anchor stud in one direction, said coacting guide means including bayonet slots in said hollow stem riding over said securing means, each bayonet slot being longitudinal on the stem and having at least one bayonet extension at an angle opposite to the direction of bias of said tension spring.
Claim 15
Dependent Claim
95 words
The tiedown device specified in claim 13, and said securing means to secure said backing member to said housing being a pin secured to said backing member and to said housing, said backing member having at least a pair of diametrical slots in the part thereof adjacent said pin, each of said slots being adapted to nest on said pin, thereby to permit the adjustment of the tension of said spring by turning said backing member together with thE anchored end of said tension spring anchored thereon for engagement with the diametrical slots in sequence.
Claim 16
Dependent Claim
28 words
The tiedown device specified in claim 14, and said angular portion of said guide slot being engageable with said pin in the retracted position of the anchor stud.
Claim 17
Dependent Claim
67 words
The tiedown device specified in claim 15, and each of said slots having at least a pair of bayonet extensions in a direction opposite to the bias of said coil spring, one of said bayonet extensions being engageable with said pin in the retracted position of said anchor stud and the other bayonet extension being engageable with said pin in the extended position of said anchor stud.
Claim 18
Dependent Claim
28 words
The tiedown device specified in claim 14, and means on the head of said stud engageable for turning said stud for disengaging said bayonet extension from said pin.
Claim 19
Dependent Claim
59 words
The tiedown device specified in claim 13, and said means to limit the axial outward movement of said anchor stud including a limit plug adjustably secured in the free end of said hollow stem, and means to adjust said limit plug axially relatively to said slots for determining the stroke of travel of said stem relatively to said housing.
Claim 20
Dependent Claim
61 words
The tiedown device specified in claim 13, and said means to limit the axial outward movement of said anchor stud including a limit plug threaded into the free end of said stem, said head and said backing member having registering apertures therethrough for the insertion of a tool for turning said threaded plug thereby adjusting the effective lengths of said slots.
References Cited (Backward Citations)
US2755120A
Cited
US2729418A
Cited
US3204579A
Cited
US3486787A
Cited
US3618884A
Cited
US3691595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-03 | 1979-05-05 | 1979-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-03 | 1983-05-05 | 1983-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-03 | 1987-05-05 | 1987-11-04 | $7700.00 | Window Closed / Lapsed |