US3602929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable bed rail unit
Assignee: Lumex Inc
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Filing: 1970-03-02
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Granted: 1971-09-07
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Expires: 1990-03-02
Abstract
Abstract A guardrail unit for hospital beds or the like including an adjustable spring-loaded frame assembly for mounting on differently sized bed frames. The frame assembly includes a guide and clamping device for quick assembly and release from the bed. The frame assembly has two telescoped axially movable tubular members arranged so that they must first be rotated angularly with respect to each other in order to slide them inwardly of each other.
Inventors
- 👤 Charles E Murcott
- 👤 Arthur Salerno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:07
CPC Classifications
A; A61; A61G; A61G7/00; A61G7/05; A61G7/0507; A61G7/0508; A61G7/0509; A61G7/0512; A61G7/0513; A61G7/0514; A61G7/0516
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
248 words
A frame member for an adjustable bed guardrail apparatus of the type having depending posts at opposite ends and adapted to be mounted on a frame of a bed having a pair of side rails, comprising in combination: a pair of tubular members axially telescoped into each other and turnable circumferentially with respect to each other; cylindrical crossheads secured at outer ends of the tubular members respectively for receiving respective depending parallel posts of a guardrail, said crossheads being normally disposed in axially parallel and coplanar position; connecting means coupled between the tubular members and adapted to exert an axially expansive force therebetween; guide-clamping means moveably mounted on each end of the tubular members adjacent one of the crossheads and responsive to said axially expansive force to engage the side rails of the bed frame; guide-clamping stop means positioned on each tubular member to provide a stop for axial movement of said guide-clamping means; and safety means for preventing axial movement of one tubular member into the other tubular member while the tubular crossheads are axially parallel and coplanar with each other and for permitting such inward axial movement only when the tubular members are rotated with respect to each other to dispose the crossheads out of their normal axially parallel coplanar position, whereby the guide-clamping means can be disengaged from the side rails of the bed frame only when the posts of the guardrail are removed from the crossheads to permit relative rotation of the tubular members.
Claim 2
Dependent Claim
248 words
A frame member for an adjustable bed guardrail apparatus of the type having depending posts at opposite ends and adapted to be mounted on a frame of a bed having a pair of side rails, comprising in combination: a pair of tubular members axially telescoped into each other and turnable circumferentially with respect to each other; cylindrical crossheads secured at outer ends of the tubular members respectively for receiving respective depending parallel posts of a guardrail, said crossheads being normally disposed in axially parallel and coplanar position; connecting means coupled between the tubular members and adapted to exert an axially expansive force therebetween; guide-clamping means moveably mounted on each end of the tubular members adjacent one of the crossheads and responsive to said axially expansive force to engage the side rails of the bed frame; guide-clamping stop means positioned on each tubular member to provide a stop for axial movement of said guide-clamping means; and safety means for preventing axial movement of one tubular member into the other tubular member while the tubular crossheads are axially parallel and coplanar with each other and for permitting such inward axial movement only when the tubular members are rotated with respect to each other to dispose the crossheads out of their normal axially parallel coplanar position, whereby the guide-clamping means can be disengaged from the side rails of the bed frame only when the posts of the guardrail are removed from the crossheads to permit relative rotation of the tubular members.
Claim 3
Dependent Claim
108 words
A frame member as defined in claim 1, wherein said safety means comprises a pin extending radially outward of one of the tubular members, and a slot extending axially outward toward one crosshead from an inner end of the other tubular member, said slot having a straight portion and a circumferentially offset end portion which is normally aligned with said pin to stop axially inward movement of the tubular members, whereby the pin can slide in the straight portion of the slot only when the crossheads and tubular members are turned angular with respect to each other to align the pin with the straight portion of the slot.
Claim 4
Dependent Claim
44 words
A frame member as defined in claim 2, wherein said offset portion of the slot has an oblique camming portion to guide the pin into the straight portion of the slot while the crossheads and tubular members are rotated with respect to each other.
Claim 5
Dependent Claim
54 words
A frame member as defined in claim 3, wherein said pin is normally disposed in said slot at the inner end of said other tubular member to limit circumferential rotation of the tubular members with respect to each other to an angle determined by the width of said offset end portion of the slot.
Claim 6
Dependent Claim
70 words
A frame member as defined in claim 1, wherein one of the tubular members is smaller in diameter than the other tubular member, and further comprising a bushing on said one tubular member adjacent the crosshead thereon and supporting the guide-clamping means thereon, said bushing having a diameter equal to that of the other tubular member so that the guide-clamping means are disposed in axial alignment on both tubular members.
Claim 7
Dependent Claim
50 words
A frame member as defined in claim 2, wherein said guide-clamping stop means on the other tubular member comprises another pin extending radially outward of the other tubular member, said connecting means comprising biasing means interconnecting both pins and thereby exerting said axially expansive force on the telescoped tubular members.
Claim 8
Dependent Claim
22 words
A frame member as defined in claim 6, wherein said biasing means comprises a tension spring extending axIally between the two pins.
Claim 9
Dependent Claim
44 words
A frame member as defined in claim 6, wherein said biasing means further comprises an elongated closed loop member, the ends of the loop member each engaging respectively one of the pins so as to restrict axially expansive movement of the telescoped tubular members.
Claim 10
Dependent Claim
33 words
A frame member as defined in claim 8, wherein said biasing means further comprises a tension spring engaged on said loop member and bearing against said pins at opposite ends of the spring.
Claim 11
Dependent Claim
44 words
A frame member as defined in claim 6, wherein said offset portion of the slot has an oblique camming portion to guide the pin into the straight portion of the slot while the crossheads and tubular members are rotated with respect to each other.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |