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US5464244A Expired / Lapsed US ⏱️ 0.0 years remaining

Retractable handle for hand trucks or the like

Assignee: Individual
•
Filing: 1994-10-25
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Granted: 1995-11-07
•
Expires: 2014-10-25
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Abstract

Abstract A retractable handle including two parallel sleeves, a cross member connected between the sleeves at the top, and two extension rods connected in parallel and moved in and out of the sleeves, the cross member being incorporated with a spring supported pressure plate, the pressure plate having two beveled push blocks at two opposite ends, the extension rods having two spring-supported lock bolts horizontally disposed at the bottom, wherein the lock bolts are forced by the respective springs through respective locating holes on the sleeves into respective bottom notches on the cross member and stopped above the beveled push blocks to lock the retractable handle in the operative position when the extension rods are pulled out of the sleeves; the lock bolts are forced backwards from the bottom notches of the cross member into the locating holes on the sleeves, when the pressure plate is depressed against the cross member, permitting the extension rods to be moved back inside the sleeves and received in the collapsed position.

Inventors

  • 👤 James Tsai

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 21:21
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/10; B62B1/12; B62B1/125; B62B2202/00; B62B2202/24

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 193 words
A retractable handle comprising two parallel sleeves having a respective locating hole near a respective top end, a cross member connected between said sleeves, and two extension rods connected in parallel and moved in and out of said sleeves and having a respective bottom end coupled with a respective stop member, the improvement comprising a pressure plate horizontally connected to a bottom side of said cross member by springs and having two beveled push blocks at two opposite ends and two bottom notches bilaterally disposed on a bottom side thereof; two lock bolts respectively horizontally supported on springs in respective holes on the stop members of said extension rods, said lock bolts being forced by the respective springs through respective locating holes on said sleeves into said bottom notches and stopped above said beveled push blocks to lock the retractable handle in an operative position when said extension rods are pulled out of said sleeves, said lock bolts being forced backwards from said bottom notches into the locating holes on said sleeves, when said pressure plate is depressed against said cross member, permitting said extension rods to be moved back inside said sleeves.
Claim 2
Dependent Claim 193 words
A retractable handle comprising two parallel sleeves having a respective locating hole near a respective top end, a cross member connected between said sleeves, and two extension rods connected in parallel and moved in and out of said sleeves and having a respective bottom end coupled with a respective stop member, the improvement comprising a pressure plate horizontally connected to a bottom side of said cross member by springs and having two beveled push blocks at two opposite ends and two bottom notches bilaterally disposed on a bottom side thereof; two lock bolts respectively horizontally supported on springs in respective holes on the stop members of said extension rods, said lock bolts being forced by the respective springs through respective locating holes on said sleeves into said bottom notches and stopped above said beveled push blocks to lock the retractable handle in an operative position when said extension rods are pulled out of said sleeves, said lock bolts being forced backwards from said bottom notches into the locating holes on said sleeves, when said pressure plate is depressed against said cross member, permitting said extension rods to be moved back inside said sleeves.

References Cited (Backward Citations)

US4896897A Cited
US5181590A Cited
US5178404A Cited
US5257800A Cited
US5295565A Cited
US5374073A Cited
US5291976A Cited
US5323886A Cited
US5294145A Cited
US5308103A Cited
US5397151A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1998-11-06 1999-05-08 1999-11-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2002-11-06 2003-05-08 2003-11-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2006-11-06 2007-05-08 2007-11-07 $7700.00 Window Closed / Lapsed

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